Renalfa IPP Repowers Bulgarian Solar Plant to 65 MWp With Battery Storage

Renalfa IPP has completed the repowering and hybridisation of its Devnya PV plant in Northeastern Bulgaria, expanding the solar park from its original 5 MWp nominal capacity, operational since 2011, to an installed capacity of 65 MWp. The plant has been hybridised with a co-located battery energy storage system of 60 MW/165 MWh, with Solarpro Bulgaria acting as project manager and EPC contractor.

 

The project follows Renalfa IPP's broader strategy of repowering and hybridising existing generating assets to maximise available grid connections by co-locating battery storage with solar PV, optimising production profiles and enabling the sale of green baseload products. In November 2025, the company completed a comparable repowering of its Kaolinovo PV park in Northeast Bulgaria, expanding it from 10 MWp to 60 MWp and hybridising it with a 33 MW/110 MWh battery storage system.

 

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Renalfa IPP, an Austrian joint venture between Renalfa Solarpro Group and French renewable energy infrastructure fund manager RGREEN INVEST, describes itself as one of the leading investors and developers of renewable energy projects in Central and Eastern Europe, with more than 806 MW of operational generating assets and over 1 GWh of energy storage in operation. The company states it has a further 1.1 GW of generating projects and more than 3.5 GWh of battery storage in final stages of construction and development, and is active in Hungary, Romania, Bulgaria and North Macedonia.