# Big Elm Solar ERCOT asset profile · https://askthegrid.com/assets/facilities/big-elm-solar Apex Clean Energy · Bell County · ERCOT Big Elm Solar is a solar power facility with 200 MW of EIA-reported operating capacity in Bell County, Texas, registered as EIA Plant ID 68180. Apex Clean Energy is the public owner or developer; Big Elm Solar, LLC is the registered plant entity or operator. Big Elm Solar was named as a generation source for a first-of-its-kind Consortium for Climate Solutions virtual power purchase arrangement announced November 22, 2024; Apex identified Big Elm (200 MW) as one of the two projects supplying the consortium’s ~1.3 TWh/year commitment. Commercial operation began in January 2025. The facility interconnects at Temple Pecan Creek Substation (345 kV) at 345 kV. ## Profile - **Grid role:** Utility-scale solar generation in ERCOT's energy-only market. - **Context:** Big Elm Solar was named as a generation source for a first-of-its-kind Consortium for Climate Solutions virtual power purchase arrangement announced November 22, 2024; Apex identified Big Elm (200 MW) as one of the two projects supplying the consortium’s ~1.3 TWh/year commitment. - **Physical build:** EIA / interconnection record: 200 MW AC utility-scale photovoltaic plant (single generating unit reported as BELMS) — operational (first-unit-online in 2025). Local Bell County public project listing shows the Big Elm project scope as 200 MW solar generation plus 200 MW battery storage (storage appears in public/queue records as a separate Big Elm Storage entry; ERCOT / interconnection records show a separate Big Elm Storage project reported at ~120 MW in the queue). ## Metrics - **Reported capacity:** 200 MW — EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ. - **Technology:** Solar Photovoltaic — Primary generation technology. - **Registry anchor:** Plant 68180 — Big Elm Solar, LLC · Bell County · ERCOT - **Operating status:** Operating — Big Elm Solar is operating. - **Commercial operation:** January 2025 — Best-supported operating milestone. ## Facts - **Reported capacity:** 200 MW — Solar Photovoltaic · confidence: high - **Operating status:** operating — Big Elm Solar is operating. · confidence: medium - **Location:** Bell County — ERCOT · confidence: high - **Operator:** Big Elm Solar, LLC · confidence: high - **Asset role:** solar — ERCOT · Bell County - **Commercial operation:** 2024 — Apex online milestone; EIA service month January 2025 · confidence: medium ## Related parties - **Operator:** Big Elm Solar, LLC — Owner / developer associated with Big Elm Solar. ([source](https://bigelmsolar.com/)) - **Owner / operator:** Apex Clean Energy — Owner / developer associated with Big Elm Solar. ([source](https://www.apexcleanenergy.com/)) ## Sources - [~* TEX>~](https://interchange.puc.texas.gov/Documents/58479_15_1540985.PDF) — interchange.puc.texas.gov · regulatory — Sep 19, 2025 — Generation Resource and Energy Storage Resource that was (1) included in ERCOT' s Network. BIG ELM SOLAR. Solar. 200.