2. Central and Eastern Europe

1.1. Bulgaria

Beneficiaries: 12


Intended investments in Belene are already outlined in their municipal program for energy efficiency (2018 – 2025). The focus here is on Clean Hydrogen. There will be a total of seven municipal buildings for piloting this large-scale project. The details of the plan are as follows:

1.    Construction and putting into the exploitation of 6MW solar park to power hydrogen production;

2.    Construction and putting into exploitation of 4MW alkaline electrolyser hydrogen production facility

3.    Renovation of existing pipeline network (5 km) connecting the electrolyser with public buildings in the central area of the city to provide for direct 100% hydrogen gasification for heating

4.    Purchase and adaptation of new boilers for the heating systems of public buildings to be able to work on 100% hydrogen.


This investment concept was part of Call 5. 


In Burgas, there are three sets of measures: those that are planned on public buildings, on multifamily residential buildings, and those in the field of public street lighting. Activities on public buildings will include the replacement of heating and cooling systems, insulation of roofs and walls, the replacement of doors and windows, and the installation of PV and solar panels. A total of 41 buildings, currently classed as C, will be refurbished to become classified as type A.

On the 82 multifamily residential buildings (class E and D), planned measures aim towards achieving the status of energy class B and include the insulation of roofs and walls and the replacement of doors and windows. In addition, there will be an installation of solar panels.

For the Public Street Lightning, 4641 street lights across seven residential areas will be replaced and connected to the public lightning management system.


This investment concept was part of Call 5. 

Cherven Bryag        

The investment concept project includes three strands with technology measures. The first strand refers to the integration of on-site hydrogen fuel-producing electrolyser systems into the heating systems of at least 10 public buildings. The Municipality of Cherven Bryag already has one pilot integration of a hydrogen-fuel-producing electrolyser system to the heating system of the public school "Dr Petar Beron". The second strand is the construction and putting in exploitation 20MW solar park to substitute the grid with renewable electricity used by the municipality, power H2 production, and for sale. Thirdly, there will be the construction and putting in exploitation of an H2 production facility powered by the solar park, which will produce clean hydrogen (zero emissions) to be compressed and bottled for sale or/and municipal use.


Implementation of integrated package of energy efficiency measures in municipal buildings and multifamily residential buildings including thermal insulation of walls, replacement of windows, changing the lights with LED, PV installations for hot water and roof photovoltaic systems for electricity production.


The Investment Concept in Gabrovo will look at enhancing a four-component investment project. On one hand, there is the aim to build integrated RE solar PV systems involving solar PV panels, solar mounting structure and others.

There is also a plan to build a waste-to-energy CHP system to utilize the residue from the wastewater treatment plant and landfills, including having a reactor, gasifier, and other units. In third place, there will be a renovation of the envelope of 60 residential buildings with the thermal insulation of walls, floors, and ceilings.

Lastly, it is foreseen to renovate approximately 20,000 m2 of public buildings stock to energy class A. Measures such as the improvement of heating systems, the installation of building management systems, and the improvement of the building envelope, together with building lighting systems are all on the table.


This investment concept was part of Call 5. 


The Municipality of Mizia aim to work on: Public Buildings - Renovation to nearly zero energy building and energy positive buildings; Residential buildings - renovation to class A and where feasible to nearly zero energy buildings; Building integrated renewables - PV systems on public buildings - installation of PV systems mainly for covering own needs; Street lightening - Replacement of luminaries, Use of RES, Energy management - advanced LED; Innovative energy infrastructure - production, storage and distribution of green hydrogen to replace oil fuel used in transport and industry.


The intended investment includes the construction and exploitation of a 25MW solar park for municipal needs (to replace 3250MWh/a from the grid) and industrial zone needs and clean H₂ production for the industrial zone. In addition, there will be a 5MW solar park for municipal needs (to replace 3250 MWh/a from the grid) and industrial zone needs and clean H₂ production for the industrial zone. Upon negotiations with a local gas supplier, there will be an inspection and renovation of existing pipelines to inject H₂ to partially substitute gas for the industrial zone and  H₂ will be supplied in trailers for other industry needs. Industrial zone businesses will be consulted on needs and investment readiness at the beginning to make a business case and secure the market.


The Investment Concept aims at enhancing a four-component investment project. In the first place, there is the acquisition of 20 hydrogen-powered buses and a hydrogen refueling station. Secondly, they will build a solar PV plant for the production of "green" hydrogen involving the following components: i) solar PV panels; ii) solar inverters; iii) mounting structure and, iv) complementary PV system equipment such as combiner boxes, surge arresters, monitoring equipment, cables, etc. In third place, there will be a renovation of the envelope of 50 residential buildings with the financial support of the National EE program or RRF, including the thermal insulation of walls, floors and ceilings and the replacement of windows. It is also planned to renovate over 26,000 sq.m. of public buildings (schools and kindergartens). Measures will include: i) improvement of heating systems; ii) thermal insulation of walls, floors and ceilings; iii) replacement of windows and iv) improvement of the building lighting systems.


Despite the significant efforts from the Municipality in recent years, most (97%) of the public and residential buildings in Smolyan are still characterized by high energy intensity, due to both the inefficient heating systems and the length of the winter season (6 month). 90% of the non-renovated buildings have energy consumption classes E, F and G. The central goal of the project is to introduce Energy Efficiency measures that include thermal isolation of the buildings, switching to using heat pumps and PV for the energy needs with the goal to create PEBs or, if that is not possible, to build smart grids to achieve PEDs and to develop legal and technical framework to enable the inclusion of multi- and single-family homes in PEDs. The city also intent to replace its old public transport vehicles with electric based ones and build PV-powered charging stations with enough power to cover the energy needs of the new vehicles.


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1.2. Romania

Beneficiaries: 2


The investment concept targets three main measures to increase energy efficiency, enhance renewable energy production and reduce GHG emissions. In the first place, there is the creation of a green hydrogen ecosystem by building a heavy & light duty traffic Hydrogen Refuelling Station (HRS), a green H₂ production unit connected to a mixed solar and wind power generation system, and an H₂ compression and storage facility. The ecosystem is also created by replacing the current diesel buses and public cleaning & maintenance trucks (>20 years old) with hydrogen-fuelled vehicles (FCEV). Green H₂ needs to be used for heating in the public buildings included in the renovation program. In the second place, there is a set of residential and public building retrofits (> 40 years old), incl. the representative municipal sports facilities, for increased energy efficiency including an integrated PV roof system & energy storage and installation of an H₂ suitable heating system.  Lastly, there is foreseen to install intelligent LED street lighting and traffic lights.

Sfantu Gheorghe

The plan is to insulate public buildings insulation and build a Solar Car Park with 400 parking places. The solar roof will charge the electric vehicles and provide electrical energy to the grid. Solar capacities will be installed on five public buildings during the renovations. They foresee the replacement of public lighting with LED panels. The city plans to introduce sensors in rubbish bins to optimize the collecting routes and reduce operational costs (waste management). They also wish to extend the E-bus fleet and purchase 12 new electric buses. The current solar power plant will be extended by 6 hectares with 9600 panels. Finally, there is a plan to establish a biogas facility that uses agricultural waste and by-products.


1.3. Hungary

Beneficiaries: 24


The intended technology measures are: energy efficient renovation of public buildings with building integrated renewable energy generation, energy efficient renovation of residential buildings with building integrated renewable energy generation or/and green energy purchase option for the inhabitants, energy efficient transformation of the industrial and service sector, off-site renewable energy generation with PV power plants, sustainable urban mobility and smart energy projects (intelligent traffic control system, intelligent public lighting system, smart grids).


There are 64  public buildinges owned by the 10 municipalities of the consortium which need window and door replacement as well as facade / ceiling / roof / attic / basement insulation. Solar cells are suggested to install on 58 municipal buildings of the 10 municipality. Energy renovation of residential buildings is necessary to reduce energy consumption by replacing boilers to more effective condensing boiler, even with smart meters and by insulation. The solution for local energy production can be the biomass with the energy use of local bio- and green wastes. The territory of fishponds of Alsómocsolád can be suitable for the installation of solar cells. The procurement of electric public buses and the replacement of micro area- and village caretaker services buses to electric ones to serve all 10 municipalities of the consortium are recommended. It must be examined how industrial residual heat can be reused - used for example domestic purposes.

Borsod County

The goal of the project is to spread innovative solar distribution systems for outdated panel houses’ condominiums in residential condominium buildings. Concretely, there is an intention to launch an umbrella project for four cities in Borsod - Abaúj - Zemplén County. The concept of the project contains the setting up local “Energy Agencies” in each city involved. It will provide a grant to approximately 16 000 local flats arranged into condominiums to implement PV panel and solar energy distribution systems. This will provide the residents with the possibility to diminish their energy cost with an appropriate return while decreasing CO2 emissions and the carbon dependency of the settlements.

These local energy agencies will operate grants to condominiums /flat cooperatives for their investment into solar distribution systems with legal, technical and financial counselling included.

Budapest 19, Kispest
This investment concept was part of Call 5. 

Budapest 8 district
This investment concept was part of Call 5. 


The planned Positive Energy District will include the following elements, to be examined and prepared in the frame of the investment concept:

1.    Solar panels will be installed on buildings’ flat roofs and S-SW facing pitched roofs, over tennis courts, the bus station and the parking lots of major commercial units.

2.    Heating and cooling systems of buildings (except for  those supplied by district heating) will be renewed primarily through applying heat pumps and ground-source heat pumps, as well as smart heating solutions for 1,050 residential flats, using sensors and smart meters.

Power generated by the solar panels will mainly be utilised by the buildings themselves, while excess power will be taken up by e-vehicles through 2 charging stations installed and by Decathlon’s electric car fleet. The investment plot will be part of the to-be-set-up e-bike sharing system, 3 charging stations and three smart solar benches will be installed.

Bükk region

Planned measures for this project consist of, in 1st place, the mapping of the existing public building stock with regard to energy flows, RES capacities and the opportunities to accommodate decentralized energy storage. This will be followed  by developing a technically sound investment concept, that is acceptable by the local municipalities and is in line with the other policies at regional and national levels.

This investment concept will be then developed into a concept that can be submitted to the ELENA facility for further funding. The application to be developed will include three main pillars: (i) incorporation of already existing RES capacities into a common EMS via retrofit of SCADA controllers; (ii) installation of new RES capacities; (iii) installation of decentralized battery storage providing for self-consumption and selling electricity on the market; (iv) local electric transportation.


The intended measures include a two-circles 350 MW geothermal power plant with a heat exchanger and a power generating steam turbine, 13 production and 9 re-injection thermal wells. The 4.7-kilometer-long district heating line will be renewed. Expanding the district heating system, aims to supply several public and residential buildings.


The investment concept targets four investment objectives, including 10 investment components (ICO), which are a complex renewable energy investment program (renewable energy production of 102,8 GWh/year) based on geothermal energy and district heating. Targeted sectors include  Public buildings, Building integrated renewables, Residential buildings, District heating and Innovative energy infrastructure.

This investment concept was part of Call 5. 


The aim is to stablish a large-scale geothermal district heating system. The investment concept includes assessment of geological and technological (in particular drilling) risks and their mitigation solutions in order to establish a realistic default rate. The targeted sector is that of  District Heating.

Municipality of the City of Szombathely   

One-third of Szombathely's apartments are provided with heat energy and hot water by the municipal district heating company. The goal is to have the district heating's carbon emission decreased to half. For this, they will increase the efficiency of the district heating line system, combine the independent district divisions and increase to 50% the renewables from 9%.

In the case of public buildings, they will develop energy monitoring smart grid systems and make the city's public building energy deep renovation complete. The aim is that public buildings generate for themselves 20-50% of their energy demand with the locally available renewables, and with the installation of solar panels and heat pumps.

In the case of transport, the plan is to increase the ratio of bicycles, exchange the city's bus fleet for electrical and establish the necessary storage and solar power plant for the capacity needed for charging.


The overall goal is the electrification of the local public transport. They aim toward the replacement of diesel buses with 140 e-buses and the reconstruction of a central site and repair station, which will include the installation of a solar park and electric charging infrastructure for 140 e-buses. Before the project, they will prepare the feasibility study based on EU templates. This document will contain a situation analysis, forward analysis, strategic and operative objectives, detailed scenarios, planned activities and (public) procurements, and a project schedule. The feasibility study will be prepared by an external expert. Then, there will be a cost-benefit analysis (CBA): This document will be prepared based on EU templates just like the feasibility study. Taking into account that the CBA template contains very special financial details and information, the document will be prepared by an external financial expert. One of the most important documents is the decarbonisation plan, which will be prepared within the project because it contains the bus fleet replacement's expected impacts, the replacement schedule and also the expected impacts and results of CO2 emissions reduction


It is necessary to prepare a development strategy and plan, based on which the district heating supply in Szekszárd can be improved. The aim is to promote the long-term competitiveness of district heating services, the economical operation of existing systems, environmental protection and energy management. All the heat sources in the district heating system in Szekszárd are currently based on natural gas, so it is necessary to reduce the dependence on fossil fuels and promote renewable energy supply to increase carbon neutrality.
For that reason a study design-level research on three basic developments required: the geothermal-based heat source, woodchip biomass boiler plant and the installation of several solar parks. The geothermal power plant and the biomass boiler plant could be connected to the Southern Heating Plant. The solar plant may be built from 2 to 6 solar parks with a capacity of less than 500 kVA.


One of the intended technology measures is to develop renewable energy production from solar systems installed on the roofs of urban buildings and other areas. They also plan to develop and implement a complex electromobility infrastructure, which will use the produced renewable energy. There will also be a bus fleet with battery-powered buses and the installation of an electrical charging network. They wish to expand the photovoltaic production capacity with new installations, create hybrid energy management units with a management system and upgrade the district heating system with a geothermal power plant development by installing an electric boiler involved in tertiary control. The overall long-term plan of the city is to prepare an ELENA application and therefore, the Investment Concept is the first step and the basis of the planned ELENA project.

Municipality of 3rd District, Budapest

The intended technology measures to be financed to cover a complex range of investments. The modernisation of multi-storey residential buildings in Óbuda and Újpest housing estates covers renovation (thermal insulation, replacement of windows and doors), and provision of geothermal energy for heating and solar panels on the roofs and facades providing electricity.

With 30 residential buildings in Óbuda, 59 residential and 39 public buildings in Újpest, savings amount to a total of 75 GWh/year. In Szentendre, four investments are planned: the creation of a solar park and three measures for the modernisation of the district’s heating system, contributing to a further 2.5 GWh yearly saving. Three further innovative energy infrastructures (a 1 GWh/year capacity per solar park) are planned to be built by Budapest Waterworks and Sewerage Works to provide the energy for its plant. Moreover, further investment possibilities, such as the use of water energy for producing electricity, will be assessed.

7th District Erzsébetváros - Budapest

A prerequisite for achieving the district's energy targets is the renewal of the apartment house building stock, of which 90% were built before 1945 and are privately owned. The energy performance of these buildings heated almost exclusively with natural gas is very poor. Spearheading this change, the Municipality intends to renovate 31 buildings. The planned measures include thermal insulation, replacing windows and doors, installing solar panels on roofs and upgrading the grid (smart grid). Innovative solutions for thermal insulation in inner-city apartment buildings are needed to protect the cityscape.

In addition, Erzsébetváros aims to include around 300 privately owned buildings in the longer term. As part of the financing strategy of the investment concept, a revolving building renovation fund model will be developed. That fund could accelerate the renewal of properties and allow owners to finance the costs from their energy efficiency savings.

Budapest Főváros VIII. kerület Józsefváros

Our investment concept focuses on three major areas in two districts: 1) energy efficiency of buildings 2) sustainable transport 3) renewable energy production. The largest energy savings are expected to come from energy efficiency renovation of municipality-owned institutions, apartment buildings, and selected multi-apartment buildings. The planned investments will include the replacement of windows, roof insulation and heating system upgrades, as well as facade insulation where possible. Measures will also include lighting upgrades in municipal buildings and a household appliance replacement program for citizens. In addition to municipal properties, we also want to involve condominiums and certain companies in renewable energy production by installing solar panels and setting up energy communities. In the field of transport, the main priority is to replace municipal vehicles with electric ones and to continue the traffic calming and cyclist-friendly improvements already underway.

Budapest Főváros IX. Kerület Ferencváros Önkormányzata

The Investemetn Concept will focus on:

- Energy efficiency improvements to buildings: installation of thermal insulation, replacement of louvres, modernisation of building services equipment
- Developing renewable energy sources: installing solar panels where possible
- Creating an energy efficiency improvement document for residential buildings to facilitate the planning of energy improvements and the efficient use of resources.

District 11th of Budapest, Újbuda

The investment concept will foresee energy saving measures and RE generation measures with ambitious goals in CO2 reduction (3222 tCO2 eq / year) as follows:
- Insulating the exterior walls, ceilings and basements
- Replacing windows and doors
- Replacing gas convectors with gas boilers
- Installation of solar panels on roofs
- Replacing pipelines of the district heating system.
In the implementation phase of the concept, a local energy community will be prepared supported by a SMART monitoring and management system. The energy community is to ensure that the surplus of the generated solar energy will be consumed locally. This way the concept aims to decrease the dependence on the network of the electricity supplier in longer term. The interventions worked out during development phase of the concept will be bundled to apply either for non-recoverable EU grants (especially for the public buildings) or alternative financing instruments such as ELENA facility, ESCO financing or green loans.

Municipality of 18th District, Budapest

The concept will explore four investment modules and their combinations, following the trias energetica model. First, functional repurposing, and envelope refurbishment using green constructions will target demand reduction both in transportation and building energy. This includes creating dwelling offices, shared work- and leisure spaces, envelope measures and green roofs. Second, smart micro grid, neighbourhood virtual storage and digital twinning will be explored to improve energy efficiency. Specifically, this means laying a 5th generation district heating/cooling network for distribution, and neighbourhood-scale BMS for coordinating control. Third, bio solar roofs and heat pumps will be designed to meet the remaining demand. Finally, a local energy community will be facilitated to ensure sustainable building use and the involvement of vulnerable inhabitants, amongst others.

Cegléd Város Önkormányzata

General energy goals that the city aims to achieve with the development of the Investment Concept are:

1. Support for the modernization of energy produced by private and public owners, economic actors through special programs technical and financial support by government programs.
2. Preparation of the procurement of low CO2 urban electric vehicle fleet.
3. Local regulation to support the proposed goals and develop new ones.
4. Local energy production from renewable energy sources.
5. Creating an effective system for observation and regular monitoring of results.
6. Realization of an investment concept for application for loans to specialized banks for instruments applicable to energy efficiency, government funds, structural funds.

Municipality of Debrecen

The expected total energy savings resulting from the energy efficient refurbishment (i.e. adding thermal insulation and modern control and measurement) of the 7808 dwellings supplied by district heating (DH) is 29 GWh/yr. The replacement of undersized heat exchangers and thus reducing temperature level from 127/70 °C to 117/65 °C in the DH network will add 4 GWh/yr to the savings. For the extension of renewable energy utilisation, a new RDF fired hot water boiler is planned. This can feed 15 GWh/yr heat in the DH system using the fuel produced by the local waste sorting plant, resulting reduction in imported fossil fuel demand and GHG emission. It yields further saving of 0.2 GWh/yr by avoiding the road transport of the RDF. Using geothermal heat for heating the sewage sludge at the wastewater treatment plant will produce 12.7 GWh/yr green energy. This subproject allows the feeding in the heat currently used on site the DH network reducing the natural gas-based heat production.

Dunaújváros Megyei Jogú Város

The city will analyse various investment possibilities to produce renewable energy, such as installing photovoltaic panels. The targeted buildings are mostly public buildings owned by the Municipality (city hall, schools, kindergartens, cultural centres, theatre, other institutions, sports facilities, etc.). However, some investments address prefabricated houses, the district heating of 5000 apartments, street lighting network. The primary investment option is improving some buildings' insulation and lighting systems and upgrading their heating (and cooling) systems, mainly using heat pumps. The replacement of outdated radiators and the renovation of heating pipes and heat exchangers are also planned. Solar panels are envisaged on the roofs of public buildings (flat roofs and pitched roofs facing SE-SW). In addition, expanding an existing biogas plant and using Danube's kinetic hydroelectricity through floating turbines would significantly contribute to producing renewable energy.

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1.4. Croatia

Beneficiaries: 20

Biograd na Moru
This investment concept was part of Call 5. 

Cres-Krk-Losinj (Islands in Kvarner region) Grouping

To become model islands for climate-neutral mobility, it is planned to establish a groundbreaking decarbonized system powered by RES, primarily PVs (integrated and non-integrated). By establishing a two-way flow of energy and data, electrical vehicles (EVs) will support the operation of a Smart grid with a high share of RES in real-time, resulting in a synergy between the transport and energy systems. With the gradual introduction of EVs, the development of a dense public and private charging network, new mobility services such as a multimodal vehicle sharing system, and energy-efficient public transport will help reduce energy consumption and emissions, optimise traffic and alleviate congestion. Their active participation in the energy transition will be encouraged by establishing domestic microgrids, with integrated PVs, EVs, and energy storage systems. The beneficiaries will be, the towns of Krk, Mali Losinj, and Cres; on the island of Krk, the Municipality of Malinska-Dubasnica and the towns of Baska; Dobrinj; Omišalj; Punat and Vrbnik.


This investment concept was part of Call 5. 


Geothermal energy utilization in the city of Karlovac, including borehole drilling, heat storage tank construction, transceiver station construction, accession pipeline construction, pump room/station construction, improving eco package of the current boiler (58MW), construction of a solar power plant, refurbishment of the existing district heating system and plant operation and maintenance.

Korčula (grouping)

The investment concept will be developed around the following measures (non-exhaustive list) in the different municipalities on the Croatian island of Korčula:

1. Replacement of existing lighting fixtures with more energy efficient light bulbs, 2. Installation of solar thermal collectors 3. Reconstruction of the boiler room and transition to bio-mass or switch to high-efficiency heat pumps, 4. Replacement of exterior carpentry of the building 5. Reactive power compensators 6. Introduction of photovoltaic systems on households roofs 7. Installation of a photovoltaic power plant of at least 50 kW.
In addition, there will be mobility measures such as building new bike paths and promoting cycling; the introduction of 10% biofuels in transport, car-sharing between city residents, and the electrification of public and maritime transport. The grouping applied consists of the following cities and municipalities: the City of Korčula, Municipalities of Vela Luka, Blato, Smokvica and Lumbarda.

City of Kastav and Municipality of Matulji (grouping)   

The innovative transport system, in interaction with internal subsystems and connections to the wider area, will enable a paradigm shift in mobility from ownership to a sharing economy rather than mere electrification. There will be a technology showcase space in a multi-modal green hub, electric vehicles fleets as smart charging mobile storage to support RES penetration, efficient on-demand public transport complementary to sharing systems to optimise resources, park & ride services, zero-emission last mile solutions, etc. All of this will result in energy optimization, emission reduction, reducing traffic congestion and financial savings. Innovative infrastructure in private and public locations will be a focal point for the synergy between the transport and energy systems, enabling the operation of the Microgrids and Smart Grid.


This IC will target the systematic implementation of 0-energy concepts through the district level DER and consumption of renewable energy. District scale energy renovation approach will be tested in order to speed-up the renovation works and it will be combined with the geothermal-based (GB) supply to the climate friendly neighborhoods (CFNs). The latter will serve as a test bed for planning the city’s district heating network. To lower the operating costs for public buildings and to mobilise the private investments for energy renovation in the building sector, the city decided to roll out the large-scale DER works in the three significant zones (1st – public and multifamily buildings, 2nd – public buildings, 3rd – university campus) with the aim to turn them into CFNs (0 – emission zones) by employing the mini GB heat plants for supplying these zones. Preliminarily analysis of geothermal potential has been performed but the technical analysis and feasibility study is to be done in this IC


As there is no public transport in the area, the city is working hard to develop its transport in a sustainable and environmentally friendly manner. They began working their Sustainable Mobility Plan which includes a study on public transport demand, a proposal for optimal transportation paths, and EV and H2 charging station forecasting. The first phase of the project includes the installation of a 7 MW solar power plant (via crowdfunding) and the EV and H2 charging stations. These charging stations will primarily be used to charge vehicles for the future public transport system. As the solar power plant will be located in a large area near a highway and an international railroad (connecting the Adriatic coast and Eastern Europe), a multimodal passenger and freight terminal will be built there (phase two). It will include a variety of creative digital technologies as well as car and bike-sharing services to minimise traffic congestion, air pollution, and fossil fuel demand in the city centre.


This investment concept was part of Call 5. 


This investment concept was part of Call 5. 

Općina Čavle

The area is on the verge of becoming an attractive year-round tourist destination. In order to preserve natural resources, it is necessary to establish an innovative transport system. In addition to decarbonization itself, the paradigm changes to a sharing economy. Electrical Vehicles as mobile batteries with smart charging from local RES, a sharing system and an efficient on-demand mobility system, park&ride and the net-zero CO2 last mile concepts contribute to optimizing resources, saving energy and emissions, reducing congestion and financial benefits. Being a regional link between the mountainous and coastal parts of the County and is close to a zone with numerous shopping centers, the innovative public and private infrastructure should be complementary, to create energy and transport sectors synergy. For the successful implementation of IC, the active participation of end users, who are placed at the center of the energy transition with a multidisciplinary approach to sustainability, is crucial.


This investment concept was part of Call 5. 

Poreč - Parenzo (Midwest Istria subregion, grouping)

The EUCF grant will allow the development of an Investment concept to prepare the project on the transport sector decarbonisation of the Midwest Istria subregion, in order to achieve its 2030 decarbonisation goals of the transport sector.

The project will map public buildings and abandoned landfills and analyse their PV/hydrogen potential; map and analyse existing solutions and assess the development potential of future Poreč - Pazin mobility solutions (public transport development, micromobility concept, sharing systems, private investments). It will also develop an innovative investment concept for public and private investment/public-private partnerships. The approach will foster an open, transparent relation with stakeholders and the public.

Pregrada, Zabok and Krapinske Toplice (Grouping)    

With a larger accent on e-mobility, this project is heading closer to sustainable and more efficient transport.  Urban mobility measures which are planned for analysis in the Integrated urban mobility plan for all three municipalities will be detailed in continuation.

A public bus line will be introduced to cover the Pregrada-Zabok route, with electric buses and the introduction of special transport for people with special needs and people with disabilities. Bicycle routes will be constructed, together with pedestrian paths and interventions in road infrastructure to address critical points in traffic. There will be an implementation of the Park & Ride and Bike & Ride systems, a Bike Share system, and also the infrastructure for charging electric passenger cars at multiple locations. Finally, there will be the implementation of the Car Share system and the development of a traffic tracking application for web and mobile devices, synchronization of transport systems and implementation and integration of info points with timetables and other information.


The investment concept includes various technological solutions for environmental protection, energy and mobility such as production of biogas from municipal bio-waste, design and construction of plant with UHTH technology for production of synthetic gas from the waste material, public lighting, electrical mobility and on-site production of hydrogen from excess renewable electricity sources (“green hydrogen”).

Slavonski Brod

The main measure is integrating low-temperature district heating (DH) system (4th Generation) in the city. The measure will contribute significantly to the efficient use of energy resources and better integration of renewable energy and surplus heat into the existing district heating system.

It includes the modernisation and optimisation of the existing system. There is also the introduction of renewable energy sources (geothermal heat plant, large-scale heat pumps, solar thermal) and surplus heat (industrial waste heat). ICT will be used for optimum integration of energy sources, a high-efficiency operation of the system and communication with the consumers. A new decarbonised and optimised DH system will be integrated with other parts of the energy systems and will use heat from different sources and combine them into a smart thermal grid.

Velika Gorica

The technology measures include a deep renovation of almost 1000 houses and three public buildings in order to reach nZEB or positive energy building standard, containing buildings envelope, new doors, windows and in-house heating and cooling installations. A 1.8 MW PV installation, a new district heating system with a 4 MW heating plant along with 1.5 km heating interconnection with an industrial facility and a 5.5 MW biomass heating plant are planned. Moreover, installation of district heating pipes and substations is considered. All public lighting will be changed to new LED.


Considering the fact that buildings are responsible for 40 % of global energy consumption and 33 % of GHG emissions, city is planning a major green renovation wave focusing on a building sector (swimming arena, sports hall, school buildings; multifamily apartment blocks and social housing buildings). District scale energy renovation approach will be tested in order to speed-up the renovation works and to lower the costs (joint green procurement). Moreover, in the light of a recent events on an energy market, together with the energy renovation wave strategy, city is decisive to develop plans for preparing the infrastructure for DHN employing renewables-based CHP plants. Pilot project will be prepared with the existing biomass-based CHP plant which should cover the heat needs of several public buildings and multifamily apartment blocks which will be renovated. Along with that, an innovative buildings “heat sharing network” will be tested in the self-sustained renovated building blocks.

Virovitica (CoVT)

The Investment Concept will demonstrate how 0-energy neighborhoods concept and smart grid-interactive technologies can transform homes and public buildings into connected self-sufficient energy communities. The project will put the spotlight on neighborhood level green renovation of public and multifamily buildings including the RES deployment (heat pumps and PVs in public and PVs only in multifamily buildings) and “demand response” testing to round up the sustainability story. Besides, in order to reduce dependence on fossil fuels in buildings sector and to encourage shared production/consumption from renewables as well as prosumer behavior promoting responsible energy citizenship, CoVT will test the smart microgrid concept in the 0-energy renovated neighborhoods by forming the connected self-sufficient energy communities. This FIT4 55 community partnership between public authorities and citizens will be formed around shared goals and values in order to jointly lead the way to the sustainable city.


The city performed an analysis of geothermal potential based on four existing testing boreholes to depths from 203 m to 1584 m. The water temperature is 70°C at the depth of 1500m while according to the study there could be even higher temperatures in the Southwest parts of the city, up to 140 C° at the depths of 2000-3000 m. Two boreholes production and injection with estimated capacity of 25 GWh will be installed on the land owned by the city of Vrbovec. To make maximal use of available heat it will be used in cascade. Water with higher temperatures will go to industry, lower temperatures water will be utilised in the buildings and agriculture. To have low temperature heating buildings should be renovated to nZEB standard and should be equipped with district heating substations and additional PVs for electricity generation. Special heat exchange network will supply industrial and agriculture objects. The 4DH pipelines will connect different buildings/neighbourhoods.   

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1.8. Poland

Beneficiaires: 41


This investment concept was part of Call 5. 


The project consists of the construction of PV farms with demonstration hydrogen storage on the brownfields: unused land and landfill. The planned farms are maintenance-free installations. The operation of the PV farm consists of the production of electricity from generators, photovoltaics and conversion to alternating power through inverters. The basic element is the solar panel. The panels will be attached to a steel structure, anchored directly in the ground. Approximately  1600 panels with a peak power of 0.4 kW each are estimated.
The farm will consist of the following: PV panels, internal roads, above-ground and underground infrastructure, energy-fibre cable lines, power connections, inverters, other necessary elements and monitoring. The surplus energy will be stored in a demonstration H2 storage. The stored H2 will be converted back into electricity and sold at a time of higher price or to power the City during the night valley periods.


The mplementation of the investment concept will allow the transformation of a district heating plant, producing district heat exclusively based on fine coal, into a combined heat and power plant that will produce heat and electricity based on RES sources and low-emission technologies.
The implementation of the investment measures will make it possible to achieve  approx. 10.5 MWt and 3.5 MWe - power obtained from the Thermal Waste Processing Installation. The estimated amount of biogas produced is 2.8 million m3/year of biogas. There will also be 1.6 mln m3/year of landfill gas obtained. The amount of clean energy obtained from co-firing biogas and biomethane in a gas engine (and also hydrogen in the long term) will be  75,000 GJ/year and 27,600 MWh/year and1.6 mln m3/year of landfill gas will be obtained. Lastly, approximately 25,000 Mg/year is the amount that will be obtained, hydrated, and digestated to be reused in the Waste Incineration Plant Instalacja Termicznego Przekształcania Odpadów (ITPO) installation.


The amount needed to prepare the feasibility study for the construction of an energy complex in Czechowice-Dziedzice may exceed the grant amount. Since the energy complex is at a preliminary stage, the Commune cannot define the source and amount of financing. One of the essential parts of the feasibility study is the financial analysis of the project, which can indicate the possible activities and financial resources to be involved. The development of the feasibility study for the energy complex will allow to set directions for action and indicate the activities needed to complete the investment.


Within the project, it is considered to build the new council office in Dobczyce, accessible and energetically positive and moving to it the head council office from the old building. The plan is also to modernise street lights aimed at energy savings and to establish a building renewable energy development centre. There will be the installing of new renewable energy sources in residential buildings:
photovoltaics, heating pumps and solar panels. The installation of new renewable energy sources in public buildings will be the following: photovoltaics (2 MW), a new photovoltaic power station (2 MW) and the creation of an energy community based on installed renewable energy sources, including software for energy balancing. Metering will also be built, resulting from the conditions of cooperation with the energy system operator.


The investment project plans to use these technologies:

  • agrovoltaic installations
  • energy storage system
  • efficient smart lighting system based on LED lamps
  • smart energy metering
  • efficient power grids
  • energy consumption optimalization system for public entities

Gmina Miejska Rumia

Rumia plans to fully comply with the assumptions of the European Green Deal and achieve climate neutrality by 2050. Work is currently underway to prepare and adopt a roadmap for carbon neutrality (with a 2050 timeline). Taking into account the current situation, especially in terms of energy, two phases of the process are planned: 2021-2030 and 2030-2050, that encompass both private and public sectors. In the first phase, investments will be made primarily on public and private resources, which, after preparatory and analytical work, will mainly require appropriate financial outlays as well as the involvement and consent of individual stakeholder groups.

In the second phase, it’s necessary to develop and implement new solutions based on renewable energy sources, local low-temperature heating networks and the concept of distributed and community energy.

Gmina Wałbrzych

The investement concpet will develop different paths:

1) Path 1 – 95 Communal Multifamily and Public Utility Buildings (MFB + PUB):
Deep modernization (50% reduction Efin thorough sealing improvement & building envelope insulation, new HVAC systems, coal source replacement, shift to RES power (electrical heating systems, incl heat pumps) supported by energy storage systems.
2) Path 2 – 13 PUBs
Deep renovation without heating source replacement - action aimed at low energy performance buildings heated by gas fuel systems
3) Path 3 – 3 PUBs
Heating source replacement with limited thermo-renovation
4) Virtual Power Plant (VPP) - 20 solar community PV systems of total 1,58 MW power; 20 energy storage systems of total 1 MWh capacity
5) Energy efficient communal lighting - replacement of existing 2 807 sodium lamps for LED lights with an estimated 30% reduction in energy consumption and powered from VPP
6) Decarbonised power supply to 7 leisure, sports and recreation municipal facilities by energy generated through VPP

Gmina Wołomin

The concept of energy security in Wołomin was based on a number of activities carried out by the city hall and municipal companies (ZEC and PWiK). The area related to the optimization of heat energy distribution and production through the modernization of the heating network, the introduction of biomass co-firing and the modernization of coal-fired CHP boilers will be carried out by the municipal heating company. At the same time, the company, together with the municipal authorities, will be responsible for the use of geothermal water by means of heat pumps. Miejskie Przedsiębiorstwo Wodociągów i Kanalizacji will build a part with a photovoltaic farm. The companies will also provide their own financial contribution at the project implementation stage. The component related to optimization in public utility buildings and residents' homes will be implemented by the Wołomin City Hall, and the financial contribution will come from the city budget and the participants of the task.

Gorzów Wielkopolski

The plan is to establish a system for monitoring media consumption for the collection of invoice data. The successive expansion of this system with modules for analysis and reporting of consumption and media costs in city-owned facilities will be the result. The monitoring system will be about:

  • Energy measurements and audits in thermal modernization
  • Calculations and measurements to select the most effective solutions for replacing the heat substation
  • Energy measurements and audits in public transport
  • Measurements and calculations of energy savings in the case of using LED lighting and
  • Technological analyses concerning the use of an energy transformer in tram transport


The investment concept will focus on the following actions:

  • Thermal modernization of buildings: public ones in the resources of town and county, multi-family residential ones in the resources of town, multi-family residential ones in the resources of housing associations and communities, health service and health resort ones,
  • Integration of photovoltaic installations with public buildings,
  •  Introduction of intelligent measuring system, monitoring and energy management,
  • Development of energy community associating municipal companies (energy cluster),
  • Construction of installation for heat recovery from treated sewage at the area of municipal sewage treatment plant  in order to produce heat for the needs of heating system,
  • Construction of large-scale photovoltaic installation to satisfy the needs of planned heat pumps, and in case of temporary surplus in production cooperation with planned electro-energetic network for the sake of energy community.


This investment concept was part of Call 5. 


This investment concept was part of Call 5. 


Krosno intends to implement the Green Deal and achieve climate neutrality by 2050. The town works around a development map for carbon neutrality. Bearing in mind these plans, two stages are planned: 2021-2030 and 2030-2040.
Phase 1 will be carried out to simultaneously create components that complement each other within phase 1, but phase 2 will also be built complementarily. Investments will be implemented on public, private, and housing resources, taking into account preparatory and analytical works. They will require appropriate financial outlays as well as the involvement and consent of stakeholders.
Both phases take into account the development of RES and "green" energy islands, hydrogen technologies, or local low-temperature heating networks and the concept of distributed and civic energy. All of these are aligned with the EIB energy lending policy.

Kuźnia Raciborska 

This investment concept was part of Call 5. 

Leśnicko-Ujazdowski Energy Cluster

The intended technology measures to be financed are as follows:

  • photovoltaic installations on municipal buildings and ground-based photovoltaic power plants,
  • energy storage system,
  • smart grids connections between stakeholders and energy storage connected to energy,
  • energy consumption optimalization system for public entities and entrepreneurs,
  • a system of cascaded heat pumps connected to energy storage powered by photovoltaic installations
  • measurement of public buildings and local entrepreneurs with two-way meters for remote reading of electricity and heat production and consumption.

City of Łódź

In Łódź, in 2017, the housing sector had the largest share in the total CO2 emissions (46%). For this project, a hundred municipal buildings in the historic centre of Łódź are chosen for the project. More than half of these buildings are tenement houses from the 19th century that have entered the municipal register of monuments. They are currently inhabited by about 2,600 people. At least 80% of flats have an active coal furnace. Overall, these buildings have a specific architecture, so standard solutions will not be possible to implement.

The assumed activities are the following: 1. Complex thermo-modernization of buildings,  renovation of buildings allowing for safe decarbonisation, and the replacing of coal stoves with more ecological methods of heating.


The concept of the city's energy balance is based on several pillars. They will be implemented by the city and municipal companies, depending on the component. The municipal waterworks and sewage system company will implement a part with photovoltaic farm and energy storage, public transport and the re-use of renewed water per Regulation (EU) 2020/741 of the European Parliament and the Council on minimum requirements for water reuse.
Another component, based on cogeneration of heat and energy and its distribution to end users, will be implemented by the municipal heating company. The companies will also provide a financial own contribution at the stage of project implementation. The component related to the construction of photovoltaic installations in public buildings and residents' homes will be implemented by the City of Lubartow, and the financial contribution will come from the city budget and the participants of the task.

Miasto Racibórz

The investment project plans to use these technologies:

  • gas cogeneration
  • energy storage system
  • efficient smart lighting system based on LED lamps
  •  smart energy metering
  •  efficient power grids
  • energy consumption optimalization system for public entities
  •  building thermomodernization

Nowy Targ     

Implementation of projects related to the improvement of energy efficiency of public buildings and private buildings and the increase in the use of renewable energy sources in the city of Nowy Targ. Among intended measures are photovoltaic installations with a total power of 210 kW on 4 public buildings together with the installation of renewable energy in the form of heat pumps for domestic hot water and central heating for 10 public buildings. Implementation of energy management systems in public buildings is foreseen with the thermomodernisation of four  public buildings. For the residential sector, it is planned to install 1 190 renewable energy installations - photovoltaics and further also heat pumps and biomass boilers. Thermomodernisation of 1430 residential buildings is foreseen and it is also planned to develop and modernize the heating network in the city centre, and the expansion of the heating network in the light of the streets located in the southern part of the city.


This investment concept was part of Call 5. 


This investment concept was part of Call 5. 


This investment concept was part of Call 5. 


Construction of an energy complex in Piaseczno including  the construction of an ecological heat and power plant and expansion of the heating network with the connection of new customers. In the planned combined heat and power plant, heat and electricity will be produced from several sources: a heat pump collecting heat from treated sewage, co-generation based on biogas obtained from a biogas plant for biodegradable waste and sewage sludge, and a biomass boiler.


In Piastow, the investment concept will cover

  • Photovoltaic installations
  • Electric cars and other means of transport (electro mobility)
  • Energy storage system
  • Efficient lighting system based on LED lamps
  • Energy efficiency improvements to the building envelope and building systems
  • Smart energy metering


This investment concept was part of Call 5. 


This investment concept was part of Call 5. 


The project will aim to develop a coherent concept for the implementation of projects related to the improvement of energy efficiency of public buildings and private buildings and the increase in the use of renewable energy sources in the City and Commune of Radłów.
As part of the action, photovoltaic installations with a total power of 300 kW on four public buildings and heat pump installations for domestic hot water and central heating for 14 public buildings are planned. The project will focus on the thermomodernisation of 15 public buildings and 750 private buildings. The project foresees implementation of energy-saving street lighting in which  the modernisation consists of the replacement of sodium lamps with LED lighting (700 light points are planned). 

Rejowiec Fabryczny

Revitalization of the post-industrial area will result in preparing a recreation center for local residents and tourists, including filling-in of the excavation site with gangue. This will also include the possibility of additional quality of life investments (e.g., charging stations). New energy sources will supply it with clean energy both during investment and running. Project will cover:

  • Power generation - adaptation of part of the newly freed post-industrial areas into PV farms(cca 1GWh of energy per year)
  • Public lighting -  illuminating roads and paths with LED lamps
  •  Geothermal heat pumps - for public buildings and residential areas
  • New types of energy infrastructure/demand response - deriving a part of the energy to the local energy grid for local communities.

Ruda Śląska

This investment concept was part of Call 5. 


This investment concept was part of Call 5. 


This investment concept was part of Call 5. 


The project includes an investment component (by sector). In the residential buildings sector, it is foreseen to construct renewable energy installations for residents, such as photovoltaic panels, heat pumps and biomass stoves. In the sector of Public buildings, the project looks at the thermal modernisation of public buildings. As to sustainable urban mobility, there will be the development of electro- mobility (charging stations, charging points, RES installations for stations, smart city solutions and the purchase of buses. As to Innovative energy infrastructure, there would be the construction of a biogas plant, solar farms and energy storage.


Some of the measures foreseen include thermal insulation of building partitions (15 public and 16 residential buildings) and mechanical ventilation with recuperation (23 public and 16 residential buildings). In terms of renewable energy sources, on both public buildings and residential buildings there will be photovoltaic installations on roofs, wind microturbines, removal of fossil fuel sources, heat pumps with internal installations of the building and  Energy management system in buildings. Lastly, as refers to smart grids, software and hardware for the municipal decentralized intelligent energy management system (VMES) will also be part of the measures.


This investment concept was part of Call 5.


The included measures are: sewage treatment plant-RES powered, new energy sources (wind, solar) ensuring coverage of energy needs for transport, water supply and sewage networks (minimum of 1.83 GWh/y), energy storage battery (>1MWh), use of water & sewage networks as an energy storage, thermal modernization of buildings, coal to heat pumps and old cars to e-vehicles.

Urząd Miejski Wrocławia

Wrocław has the largest system of waterways in Poland. The assumption of the project is to reduce the share of cars (individual transport) in the overall transport in the Wroc Agglomeration area, in favour of environmentally friendly water transport. At the present stage, the communes of Wroc Agglomeration are making plans for the water tram routes to be served by vessels powered by alternative fuels, with electric propulsion, e.g. solar energy or using other innovative and pro-ecological solutions contributing to energy savings and reduction of CO2 emissions. The development of zero-emission transport is particularly important from the point of view of environmental protection, rationalization of the demand for parking spaces, the accessibility of collective transport for residents, and the reduction of traffic flow, including from suburban areas.


The planned investment will cover: monitoring the environment outside the building and indoor (temperature, pressure, humidity, air quality, sunlight, sound pressure); measurement of the consumption of electricity, water, thermal energy, RES production; control of the heating and electricity consumption, air quality, ventilation; protection against flooding and fire; provision of indoor communication; display and store of the data; registration of cameras and intercoms. The system will take care of appropriate conditions in individual rooms, taking into account both internal / external conditions. It is planned to prepare mechanisms for monitoring energy measurements, search and automatic monitoring of exceedances or deviations from the norm, which will allow to obtain an image of how energy is used, where savings can be found and it will be possible to monitor the condition of the rooms that affects the efficiency of users, as well as their health in the longer term.


The development of the concept aims to attract investors for the investment (191 million €), a much higher sum than the city’s annual investment budget (39 million €). Apart from CO2 reduction and sustainable energy development, the project will improve the life quality of 108 561 residents, also by smog reduction (PM 2.5 dust emission - 50th place in the EU according to IQ Air, 12th place in Poland among 66 cities with the worst air quality), city functionality and will relieve the budget, enabling further act. Some measures envisaged are:

  • Construction of photovoltaic installations on public buildings and PV farms
  • System of intelligent metering, monitoring and energy management
  • Decarbonisation of the municipal heating system (covering 70% of the city’s residents
  • Modernisation of street lighting
  • Construction: power grid, wind farms, hydroelectric power plant and
  • Expansion of a biogas-based cogeneration system


This investment concept was part of Call 5. 


This investment concept was part of Call 5. 


The following technologies are planned to be used in investment activities:

  • Photovoltaic installations and Wind turbines
  • Co-generation (CHP systems)
  • Electric and hydrogen cars
  • Energy storage system
  • Efficient lighting system based on LED lamps 
  • Energy efficiency improvements to the building envelope and building systems and Smart energy metering

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    1.7. Czechia

    Beneficiaires: 4


    The project in Kladno is focused on smart and deep renovation of buildings. This will include setting up smart metering (sensors, smart meters, etc.), the creation of a photovoltaics network, and the modernization of the district heating network (including renewable sources, decentralization, etc.). The main sectors targeted is that of Public Buildings.

    Slezská Ostrava

    This investment concept was part of Call 5. 

    The project has five pillars of technological measures. One measure refers to the production of solar electricity on the roofs of city buildings for their direct use in the buildings. There will also be a replacement of inefficient lighting sources with LED in public buildings (schools, offices and others). They foresee the thermo-insulation of public and residential buildings, including other measures on the building envelope. They also plan to replace old heat distribution routes (high energy losses) with new efficient district heating routes. These are the backbone distribution routes, placed about 10 km across the city of Tábor. Another part of the plan is to change the fuel base of the central heat source for district heating. They wish to reduce the share of coal by 100%, in favour of wood chips (89%) and natural gas (11%). The result is a very significant reduction in the share of fuels, with a high emission factor, and a reduction in the cost of emission allowances.

    Žďár nad Sázavou

    The plan is to lower the energy consumption of the Town´s buildings through replacing lights by LEDs, installation of IRC regulation of heating, insulation of perimeter constructions, and building roof PVPPs. A complex reconstruction of the Ice Arena is also considered. The investment concpet take into consideration the complex reconstruction of the Ice Arena, the building of the former Magistrate, modernization of the Kindergarden, large-scale installation of PVPP on municipal roofs, the battery for public light. Separately to technology measures are soft measures as education and technical advisory for citizens 

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    1.9. Lithuania

    Beneficiaries: 3


    Essentially, there are two measures foreseen: In the first place, district heating relies on the use of biomass (primarily wood pellets) for central heating of buildings and offers significantly lower air pollution and carbon emissions than using natural gas as a fuel. In the second place, the measure will refer to compressed natural gas (CNG) powered public transport. The aim is to replace public transport vehicles (buses) which use diesel fuel with compressed natural gas (CNG) powered vehicles to reduce carbon emissions.
    Furthermore, the measure is feasible and consistent because the city of Elektrenai at the time of the EUCF application already has a CNG fueling station, eliminating the need for additional investments in equipment to fuel the vehicles.


    This investment concept was part of Call 5. 


    The intended technology measures are:

    • CHP, which uses woodchips material.: installation of CHP, connection to heat and electricity networks.
    • Modernization of street lightning: replacements - existing sodium lamps to LEDs, old lighting bearers; reconstruction
    • Street lighting network; modernization - control station; installation of intelligent street lighting system control equipment.
    • Solar power plant: installation of solar cell systems, connection of solar power plant to the electricity network of national grid.
    • Storage power plant to provide grid energy storage. The SPP operates in conjunction with all LT green electricity energy producers. As the time of energy production and consumption may differ, the storage will allow matching it. That can lead to s reduced price of the electricity.

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    1.5. Slovenia

    Beneficiaries: 3

    Grosuplje (Grouping)   

    The following measures are envisaged to increase energy efficiency in 37 public buildings: users’ awareness raising of energy efficiency, thermal insulation of the building envelope (17,613 m2; 150 mm insulation thickness) and replacement of 14,090 m2 windows and doors (U-value 1,1). In terms of renewables, it is foreseen to install solar PV on 53 public buildings and a new solar roof-top PV installation of 2,814.4 kWp. In addition, the replacement of old heating boilers with a RES system will be done in 20 public buildings: Public lighting optimization will also be done through the replacement of 865 poles, 850 lamps (LED technology), replacement of 20 km cables and conversion of lighting stations to 40 pcs.


    The Investment Concept will focus on 4 main points:

    1. PUBLIC BUILDINGS: The following measures are envisaged to increase energy efficiency in 9 public buildingsUsers’ awareness raising of energy efficiency, thermal insulation of the building envelope (12,545 m2; 150 mm insulation thickness) and replacement of 10,188 m2 windows and doors (U-value 1,1).
    2. BUILDING INTEGRATED RENEWABLES: Solar PV installation on 15 public buildings; New solar roof-top PV installation 3,150 kWp.
    3. REPLACEMENT OF OLD HEATING BOILERS WITH RES IN 8 PUBLIC BUILDINGS: With replacement of old heating oil and natural gas boilers, we want to switch from fossil fuel generated heat to more energy efficient renewable systems in the form of heat pumps (water-source or geothermal) technology, with total capacity 1,939 kW.
    4. DISTRICT HEATING SYSTEM: Construction of a new wood biomass DHS system “Zlato Polje”, with 4MW capacity, that will replace old natural gas boilers and Renovation of the existing DHS system “Planina”, to reduce heat pipeline losses (3,7km long).


    In Velenje, there will be the renovation and optimisation of the District Heating network (pipelines) and upgrading it to a smart distribution system. There will also be the replacement of coal-based heat generation with an alternative energy source. The project envisages the installation of either one or a combination of Solar Thermal, Solar PV, Biomass or geothermal energy sources. It also envisages the installation of high-voltage (HV) -electrode boilers and a heat storage tank.
    The study should address the gradual transition and connectivity of dispersed energy sources, all of which lead to a common goal of 100% replacement of existing coal resources. The feasibility study should be based on existing documents and be carried out in the phase of preparation of basic investment documentation together with the certification of technologies for heat production from RES and economic justification according to the technological needs of the system.

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      1.6. Slovakia

      Beneficiaries: 0

      1.10. Latvia

      Beneficiaries: 4

      The project involves a study, assessing the feasibility of several measures related to RES throughout the Adazi district. One of the issues is the deployment of RES in Carnikava parish, with the current 14 gas boiler houses to be replaced with a centralized system using RES. In the village of Kadaga, (population of around 2200), the aim is to justify the introduction of RES in the already existing district heating system.

      The measure “Promotion of the use of renewable energy resources in district heating” will be the subject of an application for credit from the European Investment Bank. Both the municipality and heating operators and the population will be able to obtain an economic justification for the efficiency and benefits of the deployment of RES.

      Jurmala Council    

      Measures foreseen are the deep retrofit of public buildings such as insulation, replacement of the ventilation system, replacement of doors and windows, replacement of the heating supply system and LED lighting. In addition, the aim is to also develop a solar park, with 5400 new PV panels, reconversion of DH boilers from natural gas to wood chip and the replacement of more than 8 000 public street lights from mercury vapour and high-pressure sodium-vapour technology to LED.


      In conformity with the new EIB energy lending policy, the Riga will finance deep retrofit projects aimed to improve the energy performance of existing residential buildings. Riga will work as a revolving fund to finance deep retrofit of multi-apartment buildings and promote the formation of energy communities implementing RES solutions. Deep retrofit projects will include at least the following EE measures:
      - insulation of the attic or roof, façades, slab on ground or basement ceiling
      - replacement of the doors and windows
      - installation of smart ventilation solutions
      - modernisation of district heating system and district hot water system, installation of individual smart heat meters
      - installation of decentralized RES solutions such as solar panels, heat pumps and others.
      There will be other measures not directly connected to EE but needed to ensure the good technical condition of the building, such as the renovation of cold-water supply and replacement of roof covering.


      Tukums intends to reduce heat energy consumption by 40% and electricity by 30% in 10 buildings. It is planned to ensure comprehensive reconstruction of the selected public municipal buildings, which will ensure a significant reduction of energy usage in the buildings. These measures usually include insulation of the building façade, refurbishment of the heating and hot water systems, change of windows, insulation of roof and basement, installation of solar PV panels and other measures.

      In the case of the Ice Hall, technical measures would be the installation of a new freezing system and heat recovery system, replacement of the lighting, installation of solar PV panels, construction of a snow melting pit, installation of a new ventilation system and renovation of the building. These measures are crucial as these buildings consume a lot of energy and have not been refurbished since their construction (20-30 years).

      1.11. Estonia

      Beneficiaries: 0