Wärtsilä is to install its GridSolv Max battery storage system at Shetland’s Lerwick power station. The  8 MW/6 MWh system is being supplied to Scottish and Southern Electricity Networks (SSEN) Distribution.

The system will provide reserve capacity, helping integrate wind power into the system. The energy system will follow the grid and save on spinning reserve, which helps to save fuel and reduce CO2 emissions. It can also provide ‘black start’ backup.

The 66MW Lerwick power station is diesel fuelled and dates back to 1953. Plans for a new station have been on hold as instead Shetland is expected to import power via a new undersea cable.

“As the electricity distribution network operator responsible for ensuring homes and businesses in Shetland receive a safe, secure and reliable supply of electricity, we’re investing in Lerwick Power Station to support full duty operations of the station until Shetland is connected to the GB electricity system. A reliable supply of electricity is essential to the local community and the North Sea oil companies operating out of Shetland, which is 200 kilometres from the northern tip of Scotland. The Wärtsilä energy storage system will enhance the islands’ security of supply, while at the same time lowering our carbon footprint,” said Darren Hitchin, Embedded Generation Manager at Lerwick Power Station.