San Mateo County, California
DataCentersExposed tracks 1 AI data center in San Mateo County, California — 0 operating and 1 in the pipeline.
Sources: Methodology, Coverage scorecard
Reporting by Eric Keller · Updated May 29, 2026
What's happening in San Mateo County
Below: every tracked facility in the county, the active state legislation that names it or its county, and local news. Commissioner vote records arrive in a later release; the placeholders show where that accountability data will land.
2035 Buildout Outlook
Under the model's moderate-growth scenario (5%/yr annual load growth), PNNL's IM3 model sites about 10 standardized 36 MW campuses in San Mateo County by 2035 — roughly 360 MW of new electricity demand and ~348 M gal/yr of cooling water. For scale, we currently track 1 real data center in San Mateo County.
- Higher growth10360 MW · ~348 M gal/yr cooling water
The model assigns ~100% of these campuses' cooling to evaporative water cooling in San Mateo County (the rest to mechanical/air cooling), a split it derives from local water stress and wet-bulb temperature.
These are modeled candidate sites, not announced or permitted facilities. PNNL's IM3 model places identical 36 MW unit-campuses at feasible locations under each scenario — it shows where demand could concentrate, never a specific parcel. Figures use a market-gravity weight of 50. How the model works.
Every tracked facility
| Facility | Operator | Status | MW |
|---|---|---|---|
| Guadalupe Quarry Redevelopment Project Data Center Brisbane | — | Proposed | — |
County commissioners
How the San Mateo County board votes on each data-center matter — the rezonings, the abatements, the water permits — is built from public-meeting minutes and roll-call records. Know of a vote we should be tracking? Tell us.