Greenfield (JACKSON - SOUTH JACKSON)
GreenfieldMadison County, California · SERC
At a glance
Greenfield (JACKSON - SOUTH JACKSON) is a greenfield datacenter candidate site in Madison County, California, scoring 52.0/100 DC Readiness — 31st of 31 scored sites in the county. Its nearest substation is JACKSON. It sits in the SERC grid region, 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.
Incentive detail: Sales tax exemption on DC equipment for $250M+ investments; no state income tax on wages.
Site location
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How does Greenfield (JACKSON - SOUTH JACKSON) compare with other sites in Madison County?
Greenfield (JACKSON - SOUTH JACKSON) ranks 31st of 31 scored candidate sites in Madison County. Its 52.0/100 is about 12% below the county average of 59.1. 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 water (90 vs 27) and its weakest is power availability (32 vs 36). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (JACKSON - SOUTH JACKSON) to power, fiber and other datacenters?
The nearest mapped substation, JACKSON, is the closest grid connection point on record and operates at 161 kV. For connectivity, the nearest internet exchange facility is DataBank Memphis (MEM1) at 64.5 miles. 6 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Newrays Two LLC Mining, 57.4 miles away.
What are the flood, water and hazard risks at Greenfield (JACKSON - SOUTH JACKSON)?
At the county level, FEMA's National Risk Index rates Madison 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 Madison County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| JACKSON | Substation-Adjacent | 500 kV | 1,000 MW | 3.9 yrs | 68.0 |
| OZ Madison | Greenfield | — | — | 3.9 yrs | 61.1 |
| Greenfield (BROWNSVILLE - TAP154774) | Greenfield | 500 kV | 1,000 MW | 3.9 yrs | 60.7 |
| MADISON WEST | Substation-Adjacent | 161 kV | 100 MW | 3.9 yrs | 60.1 |
| ALUMAX | Substation-Adjacent | 161 kV | 100 MW | 3.9 yrs | 60.1 |
| UNKNOWN120825 | Substation-Adjacent | 161 kV | 100 MW | 3.9 yrs | 60.1 |
| TAP154795 | Substation-Adjacent | 161 kV | 100 MW | 3.9 yrs | 60.1 |
| SOUTH JACKSON | Substation-Adjacent | 161 kV | 100 MW | 3.9 yrs | 60.1 |
Greenfield (JACKSON - SOUTH JACKSON): common questions
What is the DC Readiness score of Greenfield (JACKSON - SOUTH JACKSON)?
Greenfield (JACKSON - SOUTH JACKSON) scores 52.0/100 on the GridCensus DC Readiness scale, rated fair. It ranks 31st of 31 scored sites in Madison County. The Madison County average is 59.1 and the California average is 45.4.
What is the nearest substation to Greenfield (JACKSON - SOUTH JACKSON)?
The nearest mapped substation is JACKSON, at 161 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
What grid region is Greenfield (JACKSON - SOUTH JACKSON) in?
Greenfield (JACKSON - SOUTH JACKSON) is in the SERC region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
How far is Greenfield (JACKSON - SOUTH JACKSON) from an internet exchange?
The nearest internet exchange facility is DataBank Memphis (MEM1), about 64.5 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, “Greenfield (JACKSON - SOUTH JACKSON), Madison County, CA”, https://gridcensus.com/datacenter-sites/california/madison-county/greenfield-jackson-south-jackson-9522cb78 (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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