ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins80% CONFIDENCEOverall confidence: 80%How well the pin's source and references back up its dates.Weighted average of how firmly 4 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 at 75% confidence or better
EIA’s[2] September 2026 preliminary inventory records initial operation 2026-09. The first day of September 2026 is an estimated month-only display marker, not an exact opening day. The operating record supersedes earlier future forecasts.EIA’s September 2026 preliminary inventory identifies Clark Solar-Longwood, plant 69933, in Clark County, WI, with 2.5 MW electrical generation nameplate. It reports operating status and initial operation in 2026-09.
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