BOLLMAN
Substation-AdjacentContra Costa County, California · CAISO
At a glance
BOLLMAN is a substation-adjacent datacenter candidate site in Contra Costa County, California, scoring 52.0/100 DC Readiness — 37th of 222 scored sites in the county. Its nearest substation is BOLLMAN (0 mi, 115 kV). 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. GridCensus catalogs 100 MW of candidate capacity here.
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 BOLLMAN compare with other sites in Contra Costa County?
BOLLMAN ranks 37th of 222 scored candidate sites in Contra Costa County. Its 52.0/100 is roughly in line with the county average of 47.3. It is about 15% 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 power availability (56 vs 36) and its weakest is water (24 vs 27). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is BOLLMAN to power, fiber and other datacenters?
The nearest mapped substation, BOLLMAN, is about 0 miles away and operates at 115 kV. The nearest located transmission bottleneck is 33916_CURTISS _115_33917_FBERBORD_115_BR_1 _1 (CAISO), 15 miles away. For connectivity, the nearest internet exchange facility is Evocative Emeryville (EM1) at 17.8 miles. 6 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is e360, 2.9 miles away.
What are the flood, water and hazard risks at BOLLMAN?
At the county level, FEMA's National Risk Index rates Contra Costa 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 Contra Costa County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| EMBARCADERO | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 59.8 |
| BAHIA | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 56.5 |
| SOBRANTE | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 56.5 |
| MORAGA | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 56.4 |
| TECHNICAL ECOLOGICAL S. R. RESEARCH CENTER | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 56.0 |
| ROSSMOOR | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 56.0 |
| ROSSMOOR TAP 2 | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 56.0 |
| TESORO | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 55.6 |
BOLLMAN: common questions
What is the DC Readiness score of BOLLMAN?
BOLLMAN scores 52.0/100 on the GridCensus DC Readiness scale, rated fair. It ranks 37th of 222 scored sites in Contra Costa County. The Contra Costa County average is 47.3 and the California average is 45.4.
What is the nearest substation to BOLLMAN?
The nearest mapped substation is BOLLMAN, about 0 miles away, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves BOLLMAN?
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 BOLLMAN in?
BOLLMAN is in the CAISO region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
How far is BOLLMAN from an internet exchange?
The nearest internet exchange facility is Evocative Emeryville (EM1), about 17.8 miles away; 6 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, “BOLLMAN, Contra Costa County, CA”, https://gridcensus.com/datacenter-sites/california/contra-costa-county/bollman-7cffb680 (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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