Developed by Harmony Energy, Little Raith is a large-scale energy storage project located in Fife, Scotland. It has a capacity of 50 MW and can store up to 100 MWh of electricity, allowing it to discharge energy when demand peaks or when renewable energy generation is low, such as during calm wind periods or at night. Little Raith BESS features what could be the first in the UK, black glossy distribution transformers. Fourteen 4.2MVA 33kV/480V-480V Wilson T2 Ecotrans LV Transformers were supplied hermetically sealed and KNAN (FR3-filled).
The two-hour duration BESS is situated close to Little Raith Wind Farm, 45.75MW. The site utilises twenty-seven XL Tesla Megapacks and Tesla Autobidder software, a real-time trading and control platform that provides value-based asset management and portfolio optimisation to maximise revenue.