Rotundo
IndustrialSuffolk County, New York · ISO-NE
At a glance
Rotundo is an industrial datacenter candidate site in Suffolk County, New York, scoring 55.9/100 DC Readiness — 59th of 101 scored sites in the county. 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.
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 Rotundo compare with other sites in Suffolk County?
Rotundo ranks 59th of 101 scored candidate sites in Suffolk County. Its 55.9/100 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 fiber connectivity (95 vs 76) and its weakest is power availability (30 vs 38). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Rotundo to power, fiber and other datacenters?
The nearest located transmission bottleneck is GREENLWN 138 SYOSSET 138 1 (NYISO), 1 miles away. For connectivity, the nearest internet exchange facility is 365 Data Centers Commack (CNY) at 6.7 miles. 13 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is 365 Data Centers Commack (CNY), 6.7 miles away.
What are the flood, water and hazard risks at Rotundo?
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 |
Rotundo: common questions
What is the DC Readiness score of Rotundo?
Rotundo scores 55.9/100 on the GridCensus DC Readiness scale, rated good. It ranks 59th of 101 scored sites in Suffolk County. The Suffolk County average is 56.4 and the New York average is 54.0.
Which electric utility serves Rotundo?
FISHERS ISLAND UTILITY CO INC (investor owned) holds the retail service territory that contains the site.
What grid region is Rotundo in?
Rotundo is in the ISO-NE region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Rotundo from an internet exchange?
The nearest internet exchange facility is 365 Data Centers Commack (CNY), about 6.7 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, “Rotundo, Suffolk County, NY”, https://gridcensus.com/datacenter-sites/new-york/suffolk-county/rotundo-430a36d7 (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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