The UK Department for Energy Security and Net Zero has granted development consent for the Stonestreet Green Solar project, comprising approximately 150 MWp of solar photovoltaic generation and 99.9 MW of battery energy storage system capacity. Located near Ashford in Kent, the 192-hectare project marks a key milestone for energy developers Korkia and Evolution Power.
A nationally significant infrastructure project
With a capacity exceeding 50 MW, Stonestreet Green Solar is designated a Nationally Significant Infrastructure Project (NSIP). This status requires an approval process handled directly by the UK government instead of local authorities, under a more comprehensive regulatory framework. The project remains subject to a six-week judicial review period before the decision becomes legally binding.
The site was selected for its high solar irradiance and proximity to a grid connection point, allowing efficient integration into the national electricity system. Once operational, the plant is expected to generate enough electricity to supply over 42,000 UK households annually.
Expanding UK project portfolio
Stonestreet Green Solar is the first of four Korkia and Evolution Power projects to secure consent through the NSIP framework. Together, the projects represent more than 2.5 GW of solar generation capacity, all with co-located storage systems. In August 2025, the companies secured planning permission for Wandon End Solar, a 49.9 MWp project in Hertfordshire.
The approval reflects both companies’ strategy to secure large-scale assets in the UK energy market. “This process highlights the company’s ability to advance major NSIP schemes,” said Peter Bolton, Vice President, Portfolio Investments and UK Country Manager at Korkia.
Global activity continues for Korkia
Active in nine countries, Korkia currently oversees a portfolio of more than 150 energy projects exceeding 22 GW. As of August 2025, approximately 9.4 GW are in late-stage development. Recent project advancements include a 125 MW battery storage facility in Sievi, Finland, and a combined 80 MW solar and 30 MW storage project in Loviisa.
This momentum reflects a multisite development strategy based on local partnerships and accelerated permitting procedures across various European markets.
