Historically, it has been easier to predict solar (PV) power generation than wind power generation. Solar can be predicted with approximately 90% accuracy, compared to wind at 60%.
The 5 MW / 5 MWh BESS Nidec designed for the wind farm, which is comprised of seven 2 MW wind turbines, includes a sophisticated energy management system that significantly improves wind power prediction accuracy. Because of the system’s integration with the weather forecasting system and wind flow data tracking, forecast accuracy for electricity production is expected to increase from 70% to 90% over the first three years of the BESS’s operation.
In addition to the energy management system and lithium batteries, Nidec’s BESS includes power conversion and power management systems.
The energy storage solution — the second such project Nidec completed for the wind power industry – today enables the wind farm to make optimal use of its wind resources. Nidec’s innovative predictive technology not only improves the security of the island’s power supply, it allows the wind farm to significantly improve the flow of energy through the grid.