# California Valley Solar Ranch

CAISO asset profile · https://askthegrid.com/assets/facilities/california-valley-solar-ranch

High Plains Ranch II, LLC - San Luis Obispo County - CAISO

California Valley Solar Ranch is a 250 MW utility-scale photovoltaic facility located on 4,700 acres in eastern San Luis Obispo County, California. The project uses SunPower single-axis tracker technology deployed across nine solar photovoltaic arrays and generates approximately 650,000 MWh annually, sufficient to power approximately 100,000 homes. The project is represented in CAISO as two phases: Phase A (210 MW) and Phase B (40 MW). The facility is operated by Clearway Energy Operating LLC and indirectly owned by Clearway Energy Group LLC.

## Metrics

- **Nameplate capacity:** 249.8 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 57439 — plant-57439

## Facts

- **Technology:** Solar Photovoltaic
- **Operator:** Clearway Energy Operating LLC

## Related parties

- **Project company / owner:** High Plains Ranch II, LLC — Legal project owner identified in regulatory records (FERC MBR) and EPC agreement
- **Operator / O&M provider:** Clearway Energy Operating LLC — Operating entity for the facility as identified in FERC EIA plant record and Clearway corporate materials ([source](https://www.clearwayenergygroup.com/))
- **Owner / parent company:** Clearway Energy Group LLC — Ultimate owner of Clearway Energy Operating LLC and indirect owner of the California Valley Solar Ranch project through Clearway ownership structure; acquired from NRG through GIP transaction ([source](https://www.clearwayenergygroup.com/))
- **Former owner / EPC contractor / O&M provider / equipment supplier:** SunPower Corporation, Systems — Developed and sold the project to NRG; supplied T0 tracker and Oasis power block technology; completed design and construction; jointly operated and maintained for two years post-completion ([source](https://us.sunpower.com/))
- **Construction contractor / construction partner:** Bechtel — Provided balance-of-plant engineering, procurement, and construction services in collaboration with SunPower ([source](https://www.bechtel.com/))

## Sources

- [energymonitor.ai](http://energymonitor.ai/projects/california-valley-solar-ranch-san-luis-obispo-county-california) — energymonitor.ai · public_source — Source retained for exact-record publication review.
- [nrg.com](http://nrg.com/assets/documents/generation/FactSheet_CVSR.pdf) — nrg.com · public_source — Source retained for exact-record publication review.
- [prnewswire.com](http://prnewswire.com/news-releases/nrg-energy-completes-acquisition-of-250-megawatt-california-valley-solar-ranch-from-sunpower-130876833.html) — prnewswire.com · public_source — Source retained for exact-record publication review.
- [ceqanet.lci.ca.gov](https://ceqanet.lci.ca.gov/2011044004) — ceqanet.lci.ca.gov · authoritative — Source retained for exact-record publication review.
- [energy.gov](https://energy.gov/edf/california-valley-solar-ranch) — energy.gov · authoritative — Source retained for exact-record publication review.

---

Canonical page: https://askthegrid.com/assets/facilities/california-valley-solar-ranch
Website: [High Plains Ranch II, LLC](https://www.clearwayenergygroup.com/)

Source: Ask the Grid — https://askthegrid.com/