
Danville Utilities, a municipal utility based in Danville, Virginia, is contracting for an 11-MW/44-MWh battery storage project to be built and owned by Lightshift Energy, the battery storage company said Wednesday.
Danville Utilities plans to use the storage facility to reduce its peak demand, which it expects will lower its demand and transmission charges by about $30 million over the 20-year life of the project.
About 40% of Danville Utilities’ power supply costs are demand-related and they are increasing by 10% to 15% a year, according to a Nov. 7 Danville City Council memo on the project, which Lightshift expects will be operating in the second quarter next year. The memo states that PJM Interconnection’s capacity rate for Danville Utilities is jumping to $8.29/kW-month starting June 1 from 96 cents/kW-month.
An existing 10.6-MW storage project built by Lightshift has helped reduce the Danville Utilities’ transmission, capacity and congestion charges since it started operating in 2022, according to the memo from Lightshift, formerly Delorean Power. Lightshift expects the project will save the utility $40 million over its life.
Lightshift will use the new battery system to sell ancillary services into the PJM market and arbitrage wholesale energy prices, according to the memo.
“The project will help lower transmission and capacity costs and allow the city’s electric rates to be competitive to other neighboring electric utilities when competing for economic development projects,” Jason Grey, Danville director of utilities, said in the press release. Danville Utilities has about 42,000 customers.
The project in February received $1.5 million from the Virginia Tobacco Region Revitalization Commission’s Energy Ingenuity Fund.
Municipal utilities and rural cooperatives are focused on cost, and energy storage can save them money while adding resilience to their systems, according to Laura Coriell, head of market development for Lightshift, which is based in Arlington, Virginia. “They are also hedging against rising PJM costs and making room for data centers by adding additional resource adequacy,” she said in an email.
When possible, Lightshift “value stacks” peak shaving projects with microgrids, which provide reliability benefits for critical infrastructure, Coriell said, pointing to projects the company is deploying in Massachusetts.
Lightshift, based in Arlington, Virginia, was founded in 2019 and is backed by Greenbacker Capital Management, an independent power producer and investment manager.