SML's Bergey Excel 10 kW rated wind turbine feeds power into the ECB grid when there is sufficient wind. At night, this is the island's only source of green energy. In the winter, the blades of the turbine are taken down. Prior to June 18, 2021, a Bergey BWC Excel R 7.5 kW rated turbine was in use. An offset of -0.13 kWh has been used on hourly values since October 1, 2019 to account for data noise from the island grid. The offset was increased to -0.29 kWh on June 24, 2021. It was decreased back to -0.13 kWh on October 1, 2022 based on recommendations by the SML Sustainable Engineering Interns. Turbine is 36.4 m AMSL. Radar tower anemometer is 43m AMSL. White island anemometer is 32.3m AMSL.