TUPMAN
Substation-AdjacentKern County, California · CAISO
At a glance
TUPMAN is a substation-adjacent datacenter candidate site in Kern County, California, scoring 47.3/100 DC Readiness — 91st of 284 scored sites in the county. Its nearest substation is TUPMAN (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 TUPMAN compare with other sites in Kern County?
TUPMAN ranks 91st of 284 scored candidate sites in Kern County. Its 47.3/100 is roughly in line with the county average of 45.7. It is roughly in line with the California average of 45.4 and about 11% below the national average of 53.2.
Against the California average, its strongest sub-score is power availability (56 vs 36) and its weakest is fiber connectivity (60 vs 66). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is TUPMAN to power, fiber and other datacenters?
The nearest mapped substation, TUPMAN, is about 0 miles away and operates at 115 kV. The nearest located transmission bottleneck is 30060_MIDWAY _500_29402_WIRLWIND_500_BR_1 _2 (CAISO), 11 miles away. For connectivity, the nearest internet exchange facility is SD / Comsat Santa Paula Ground Station at 65.9 miles. 12 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is SD / Comsat Santa Paula Ground Station, 65.9 miles away.
What are the flood, water and hazard risks at TUPMAN?
At the county level, FEMA's National Risk Index rates Kern 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 Kern County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| WINDHUB | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 56.9 |
| WHIRLWIND | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 56.7 |
| MIDWAY | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 56.1 |
| UNKNOWN306810 | Substation-Adjacent | 345 kV | 600 MW | 7.6 yrs | 55.1 |
| UNKNOWN300111 | Substation-Adjacent | 345 kV | 600 MW | 7.6 yrs | 54.4 |
| UNKNOWN308953 | Substation-Adjacent | 345 kV | 600 MW | 7.6 yrs | 54.4 |
| WESTWIND | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 53.2 |
| ARBWIND | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 52.5 |
TUPMAN: common questions
What is the DC Readiness score of TUPMAN?
TUPMAN scores 47.3/100 on the GridCensus DC Readiness scale, rated fair. It ranks 91st of 284 scored sites in Kern County. The Kern County average is 45.7 and the California average is 45.4.
What is the nearest substation to TUPMAN?
The nearest mapped substation is TUPMAN, about 0 miles away, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves TUPMAN?
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 TUPMAN in?
TUPMAN is in the CAISO region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
How far is TUPMAN from an internet exchange?
The nearest internet exchange facility is SD / Comsat Santa Paula Ground Station, about 65.9 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, “TUPMAN, Kern County, CA”, https://gridcensus.com/datacenter-sites/california/kern-county/tupman-43ecb156 (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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