NEPTUNE
Substation-AdjacentDuval, Florida · SERC
At a glance
NEPTUNE is a substation-adjacent datacenter candidate site in Duval, Florida, scoring 60.7/100 DC Readiness — 65th of 263 scored sites in the county. Its nearest substation is NEPTUNE (0 mi, 138 kV). It sits in the SERC grid region and the BEACHES ENERGY SERVICES service territory, where interconnection has averaged 3.7 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
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 manufacturing machinery including servers; no state income tax.
Site location
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How does NEPTUNE compare with other sites in Duval?
NEPTUNE ranks 65th of 263 scored candidate sites in Duval. Its 60.7/100 is roughly in line with the county average of 58.3. It is roughly in line with the Florida average of 56.0 and about 14% above the national average of 53.2.
Against the Florida average, its strongest sub-score is power availability (58 vs 41) and its weakest is water (76 vs 76). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is NEPTUNE to power, fiber and other datacenters?
The nearest mapped substation, NEPTUNE, is about 0 miles away and operates at 138 kV. For connectivity, the nearest internet exchange facility is Flexential - Jacksonville (JAX1/2) at 10.8 miles. 16 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Flexential Jacksonville, 10.8 miles away.
What are the flood, water and hazard risks at NEPTUNE?
At the county level, FEMA's National Risk Index rates Duval "Very 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 Duval, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN120509 | Substation-Adjacent | 230 kV | 300 MW | 3.7 yrs | 68.3 |
| DUVAL | Substation-Adjacent | 500 kV | 1,000 MW | 3.7 yrs | 68.2 |
| Southside Generating Station | Brownfield | — | 232 MW | 3.7 yrs | 67.9 |
| HARTLEY | Substation-Adjacent | 230 kV | 300 MW | 3.7 yrs | 66.8 |
| FOREST | Substation-Adjacent | 230 kV | 300 MW | 3.7 yrs | 66.6 |
| GREEN ENERGY CENTER | Substation-Adjacent | 230 kV | 300 MW | 3.7 yrs | 66.4 |
| EC Near J D Kennedy | Greenfield | — | — | 3.7 yrs | 66.0 |
| UNKNOWN120521 | Substation-Adjacent | 230 kV | 300 MW | 3.7 yrs | 65.9 |
NEPTUNE: common questions
What is the DC Readiness score of NEPTUNE?
NEPTUNE scores 60.7/100 on the GridCensus DC Readiness scale, rated good. It ranks 65th of 263 scored sites in Duval. The Duval average is 58.3 and the Florida average is 56.0.
What is the nearest substation to NEPTUNE?
The nearest mapped substation is NEPTUNE, about 0 miles away, at 138 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves NEPTUNE?
BEACHES ENERGY SERVICES (municipal) holds the retail service territory that contains the site.
What grid region is NEPTUNE in?
NEPTUNE is in the SERC region. Projects interconnecting there have averaged a 3.7-year wait from queue request to operation.
How far is NEPTUNE from an internet exchange?
The nearest internet exchange facility is Flexential - Jacksonville (JAX1/2), about 10.8 miles away; 16 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, “NEPTUNE, Duval, FL”, https://gridcensus.com/datacenter-sites/florida/duval/neptune-7073da9f (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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