Beneficiaries: 9


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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.



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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.

Cherven Bryag

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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.



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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.



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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.



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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.



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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.



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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.



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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.