Dominion Energy announced large-scale storage projects and RfP of 500 MW solar and wind
Post date: 07/08/2019 - 16:46
US utility Dominion Energy will build four utility-scale battery storage pilot projects »to help pave the way for additional energy storage technology needed to support the company's increase in renewables and to improve grid reliability.« The projects totaling 16 MW »are the largest projects of their kind in Virginia,« says the company. They were filed with the State Corporation Commission (SCC) for approval and are enabled by the Grid Transformation & Security Act of 2018, which allows Dominion Energy to invest in up to 30 MW of battery storage pilot projects. The four proposed central Virginia-based lithium-ion projects will cost approximately $33 million to construct. Pending SCC approval, the pilots would be evaluated over a five year period once operational as currently expected in December 2020.
Two battery systems totaling 12 MW at the »Scott Solar« facility in Powhatan County will demonstrate how batteries can store energy generated from solar panels during periods of high production and release energy during periods when load is high or solar generation is low. It would also help optimize the power produced by the solar facility.
A 2 MW battery at a substation in Ashland will explore how batteries can improve reliability and save money on equipment replacement by serving as an alternative to traditional grid management investments such as transformer upgrades, necessary to serve customers during times of high energy demand. Another 2 MW battery at a substation in New Kent County serving a 20 MW solar facility will show how batteries can help manage voltage and loading issues caused by reverse energy flow, to maintain grid stability, says Dominion Energy.
Separately, the company issued a Request for Proposals (RfP) seeking bids for up to 500 MW of solar and onshore wind generation in the state. The Solar RfP is soliciting bids for energy, capacity and environmental attributes including Renewable Energy Certificates, for new solar facilities at least 5 MW (ac) in size. The facilities must be located in Virginia to be considered.
Dominion Energy is committed to having 3,000 MW of solar and wind in operation or under development in Virginia by 2022.