OZ Tuolumne
GreenfieldTuolumne County, California · CAISO
At a glance
OZ Tuolumne is a greenfield datacenter candidate site in Tuolumne County, California, scoring 40.0/100 DC Readiness — 100th of 100 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 OZ Tuolumne compare with other sites in Tuolumne County?
OZ Tuolumne ranks 100th of 100 scored candidate sites in Tuolumne County. Its 40.0/100 is roughly in line with the county average of 41.5. It is about 12% below the California average of 45.4 and about 25% below the national average of 53.2.
Against the California average, its strongest sub-score is water (52 vs 27) and its weakest is fiber connectivity (6 vs 66). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is OZ Tuolumne to power, fiber and other datacenters?
The nearest located transmission bottleneck is 34002_SALADO _60.0_34008_STNSLSRP_60.0_BR_1 _1 (CAISO), 26 miles away. For connectivity, the nearest internet exchange facility is 801 Tenth Street Modesto (Ayera) at 42.4 miles. 4 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is 801 Tenth Street Modesto (Ayera), 42.4 miles away.
What are the flood, water and hazard risks at OZ Tuolumne?
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 Tuolumne 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 Tuolumne County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN302149 | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 47.6 |
| SIERRA PACIFIC INDUSTRIES | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 47.0 |
| NEW MOCCASIN CR | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.9 |
| MI-WUK | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.9 |
| SPRING GAP TAP | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.8 |
| EARLY INTAKE | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.7 |
| SPRING GAP | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.7 |
| SANDBAR | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.6 |
OZ Tuolumne: common questions
What is the DC Readiness score of OZ Tuolumne?
OZ Tuolumne scores 40.0/100 on the GridCensus DC Readiness scale, rated fair. It ranks 100th of 100 scored sites in Tuolumne County. The Tuolumne County average is 41.5 and the California average is 45.4.
Which electric utility serves OZ Tuolumne?
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 OZ Tuolumne in?
OZ Tuolumne is in the CAISO region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
Is OZ Tuolumne 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 OZ Tuolumne?
Parcel records list the owner as PACIFIC GAS & ELECTRIC COMPANY (private land).
How far is OZ Tuolumne from an internet exchange?
The nearest internet exchange facility is 801 Tenth Street Modesto (Ayera), about 42.4 miles away; 4 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, “OZ Tuolumne, Tuolumne County, CA”, https://gridcensus.com/datacenter-sites/california/tuolumne-county/oz-tuolumne-19c059c1 (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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