ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins52% CONFIDENCEOverall confidence: 52%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidencein 11 days
South Carolina Public Service Commission (SC PSC) grid resiliency filings and Duke Energy integrated resource planning schedules target commercial operation in November 2026.[1]The Longtown Battery Storage Project is a 5 MW / 20 MWh 4-hour utility-scale lithium-ion battery energy storage system (BESS) located along SC Highway 34 near Ridgeway in Fairfield County, South Carolina. Interconnecting directly with Duke Energy Carolinas' 44 kV sub-transmission network within the SERC reliability region, the facility provides local feeder peak shaving, grid frequency regulation, and voltage support for midlands rural distribution lines.
