Korkia’s project portfolio maturing — Solar park in Orimattila ready to build

News | 6.5.2025

The solar park in Vähä-Sorrila, Orimattila, jointly developed by Korkia and Solmar Consulting, has reached ready to build status. The fully permitted utility-scale solar power plant and battery energy storage system (BESS) will supply renewable electricity to thousands of households. 

The solar energy project in Vähä-Sorrila area was granted a final and legally binding building permit in April 2025. Co-developed by Korkia and Solmar Consulting, the project is expected to generate approximately 80,000 MWh of renewable electricity annually — enough to cover the yearly consumption of around 4,000 electrically heated detached homes. 

The solar park will have an installed capacity of approximately 80 megawatts. Additionally, a co-located 30 MW battery energy storage system has been permitted for the site, enabling optimal use of the grid connection capacity. 

Land lease agreements with local landowners were finalized in spring 2024, and all necessary environmental, stormwater, soil, and landscape surveys required for the building permit were conducted during summer 2024. 

“The Orimattila solar park project has progressed to the building permit stage through excellent cooperation with landowners and the city,” says Jari Marttinen, CEO of Solmar Consulting. 

“We are proud to contribute to the development of sustainable energy production in collaboration with our partner Korkia. Our goal is that our solar park projects deliver long-term value to landowners, local businesses, and municipalities alike,” Marttinen continues.

Competitive solar energy for growing demand 

The Vähä-Sorrila location offers several advantages for a solar energy project. 

“The Orimattila site has excellent project fundamentals. Its southern position ensures good solar irradiance levels, and the project can be implemented cost-effectively due to favourable construction conditions and proximity to grid infrastructure,” says Matti Manner, Head of Solar Project Development in Finland at Korkia. 

The permitted solar park covers a total area of 115 hectares and is situated on agricultural land ideal for solar power construction. Converting former agricultural land to solar projects can often enhance biodiversity as the land is transformed from monoculture grain fields into areas supporting more diverse vegetation.

“Throughout the preliminary design phase, we collaborated closely with biologists to preserve local ecological values — including the placement of solar panels, buffer zones, and native vegetation. Wildlife corridors were integrated into the design. In residential areas, we worked actively with landowners to minimize visual either through landscaping or by increasing distance,” explains Lauri Solin, Project Development Director at Solmar Consulting. 

Korkia’s project portfolio matures across 8 countries 

Korkia, a global renewable energy developer and investor, currently manages a portfolio of over 140 solar and battery energy projects across eight countries. In addition to the Orimattila solar park, several other projects globally as well as in Finland are expected to reach construction readiness during 2025.

Further information:

Matti Manner 
Director, Joint Venture Management, Korkia 
+358 40 735 0583 
matti.manner@korkia.fi