TIANA
Substation-AdjacentSuffolk County, New York · ISO-NE
At a glance
TIANA is a substation-adjacent datacenter candidate site in Suffolk County, New York, scoring 56.7/100 DC Readiness — 43rd of 101 scored sites in the county. Its nearest substation is TIANA (0 mi, 69 kV). It sits in the ISO-NE grid region and the FISHERS ISLAND UTILITY CO INC service territory, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 50 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
First statewide moratorium (2026): 1-yr hold on certain permits for large DCs + impact study.
Moratorium/permit hold targets large datacenters.
Incentive detail: Excelsior Jobs Program tax credits; IDA property tax abatements (PILOT); Empire State Digital Gaming.
Site location
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How does TIANA compare with other sites in Suffolk County?
TIANA ranks 43rd of 101 scored candidate sites in Suffolk County. Its 56.7/100 is roughly in line with the county average of 56.4. It is roughly in line with the New York average of 54.0 and roughly in line with the national average of 53.2.
Against the New York average, its strongest sub-score is speed to power (48 vs 40) and its weakest is fiber connectivity (75 vs 76). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is TIANA to power, fiber and other datacenters?
The nearest mapped substation, TIANA, is about 0 miles away and operates at 69 kV. The nearest located transmission bottleneck is SHOREHAM 138 WILDWOOD 138 2 (NYISO), 18 miles away. For connectivity, the nearest internet exchange facility is Lumen New Haven at 35.9 miles. 13 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Cable & Wireless Cable Landing Station, 18.5 miles away.
What are the flood, water and hazard risks at TIANA?
At the county level, FEMA's National Risk Index rates Suffolk 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 Suffolk County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| OZ Suffolk | Greenfield | — | — | 4.3 yrs | 62.9 |
| RONKONKOMA | Substation-Adjacent | 138 kV | 100 MW | 4.3 yrs | 62.2 |
| UNKNOWN129500 | Substation-Adjacent | 138 kV | 100 MW | 4.3 yrs | 62.1 |
| OZ Suffolk | Greenfield | — | — | 4.3 yrs | 61.8 |
| BROOKHAVEN | Substation-Adjacent | 138 kV | 100 MW | 4.3 yrs | 61.8 |
| UNKNOWN129497 | Substation-Adjacent | 138 kV | 100 MW | 4.3 yrs | 61.4 |
| TAP141009 | Substation-Adjacent | 138 kV | 100 MW | 4.3 yrs | 61.3 |
| EC Near Port Jefferson | Greenfield | — | — | 4.3 yrs | 61.1 |
TIANA: common questions
What is the DC Readiness score of TIANA?
TIANA scores 56.7/100 on the GridCensus DC Readiness scale, rated good. It ranks 43rd of 101 scored sites in Suffolk County. The Suffolk County average is 56.4 and the New York average is 54.0.
What is the nearest substation to TIANA?
The nearest mapped substation is TIANA, about 0 miles away, at 69 kV. GridCensus catalogs 50 MW of candidate capacity for the site.
Which electric utility serves TIANA?
FISHERS ISLAND UTILITY CO INC (investor owned) holds the retail service territory that contains the site.
What grid region is TIANA in?
TIANA is in the ISO-NE region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is TIANA from an internet exchange?
The nearest internet exchange facility is Lumen New Haven, about 35.9 miles away; 13 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, “TIANA, Suffolk County, NY”, https://gridcensus.com/datacenter-sites/new-york/suffolk-county/tiana-3ed652eb (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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