DOE orders storage systems for wind, solar farms
The Department of Energy (DOE) is strengthening the reliability of renewable energy facilities, as it is now requiring developers to equip them with energy storage systems (ESS).
Based on an updated department circular, the agency said variable renewable energy power plants with a capacity of 10 megawatts and more should have ESS with a capacity of at least 20 percent of the asset’s installed capacity.
Investors are also encouraged to complement these power storage systems with grid-support capabilities to help stabilize voltage and frequency.
Variable renewable energy includes wind and solar, as the power they generate depends on environmental conditions.
“Energy storage is not only about storing surplus energy, it is about strengthening the grid’s capability to absorb more renewables while maintaining reliability,” Energy Secretary Sharon Garin said in a statement on Thursday.
“This policy ensures that ESS integration becomes part of system planning and project development, supporting better outcomes for consumers,” the DOE chief said.
It also directed transmission network providers and distribution utilities to ensure that the planned integration of ESS assets is considered in grid reinforcement planning.
The government has been pushing for more investments in the renewable energy space, as it hopes to increase its share in the electricity generation mix to 35 percent by 2030. Currently, its contribution is at 22 percent.
To encourage more private players, the DOE has been conducting green energy auctions, providing winning bidders with incentivized fixed power rates.
