EC FFE San Mateo County
GreenfieldSan Mateo County, California · CAISO
At a glance
EC FFE San Mateo County is a greenfield datacenter candidate site in San Mateo County, California, scoring 51.1/100 DC Readiness — 38th of 70 scored sites in the county. It sits in the CAISO grid region and the PACIFIC GAS & ELECTRIC CO. service territory, where interconnection has averaged 7.6 years from request to operation.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Site location
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How does EC FFE San Mateo County compare with other sites in San Mateo County?
EC FFE San Mateo County ranks 38th of 70 scored candidate sites in San Mateo County. Its 51.1/100 is roughly in line with the county average of 51.9. It is about 13% above the California average of 45.4 and roughly in line with the national average of 53.2.
Against the California average, its strongest sub-score is water (50 vs 27) and its weakest is power availability (30 vs 36). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is EC FFE San Mateo County to power, fiber and other datacenters?
The nearest located transmission bottleneck is 35658_LS ESTRS_115_35659_NORTECH _115_BR_1 _1 (CAISO), 22 miles away. For connectivity, the nearest internet exchange facility is Equinix SV8 - Silicon Valley, Palo Alto at 10.7 miles. 12 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Northwest Data Center and Communications Hub, 9.6 miles away.
What are the flood, water and hazard risks at EC FFE San Mateo County?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk). WRI rates baseline water stress at 3.80 on a 0–5 scale. No mapped wetlands are recorded on the parcel. At the county level, FEMA's National Risk Index rates San Mateo County "Relatively High".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in San Mateo County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| Hunters Point | Brownfield | 115 kV | 427 MW | 7.6 yrs | 61.3 |
| MARTIN | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 59.0 |
| S.L.A.C. | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 58.8 |
| RAVENSWOOD | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 58.0 |
| MONTA VISTA (UPPER) | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.8 |
| JEFFERSON | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.6 |
| S.L.A.C. TAP | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.4 |
| SAN MATEO | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.3 |
EC FFE San Mateo County: common questions
What is the DC Readiness score of EC FFE San Mateo County?
EC FFE San Mateo County scores 51.1/100 on the GridCensus DC Readiness scale, rated fair. It ranks 38th of 70 scored sites in San Mateo County. The San Mateo County average is 51.9 and the California average is 45.4.
Which electric utility serves EC FFE San Mateo County?
PACIFIC GAS & ELECTRIC CO. (investor owned) holds the retail service territory that contains the site; its holding company is PACIFIC GAS & ELECTRIC CORPORATION.
What grid region is EC FFE San Mateo County in?
EC FFE San Mateo County is in the CAISO region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
Is EC FFE San Mateo County in a flood zone?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk).
Who owns EC FFE San Mateo County?
Parcel records list the owner as PACIFIC GAS & ELECTRIC COMPANY (private land).
How far is EC FFE San Mateo County from an internet exchange?
The nearest internet exchange facility is Equinix SV8 - Silicon Valley, Palo Alto, about 10.7 miles away; 12 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “EC FFE San Mateo County, San Mateo County, CA”, https://gridcensus.com/datacenter-sites/california/san-mateo-county/ec-ffe-san-mateo-county-1f8a3e6c (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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