Old Thompson Mill
IndustrialRensselaer County, New York · NYISO
At a glance
Old Thompson Mill is an industrial datacenter candidate site in Rensselaer County, New York, scoring 50.7/100 DC Readiness — 51st of 60 scored sites in the county. It sits in the NYISO grid region and the NIAGARA MOHAWK POWER CORP. service territory, where interconnection has averaged 4.3 years from request to operation.
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
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 Old Thompson Mill compare with other sites in Rensselaer County?
Old Thompson Mill ranks 51st of 60 scored candidate sites in Rensselaer County. Its 50.7/100 is roughly in line with the county average of 54.3. 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 natural hazard (65 vs 64) and its weakest is fiber connectivity (66 vs 76). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Old Thompson Mill to power, fiber and other datacenters?
The nearest located transmission bottleneck is GREENBSH 115 REGENRON 115 1 (NYISO), 22 miles away. For connectivity, the nearest internet exchange facility is TurnKey Internet at 14.8 miles. 6 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Turnkey Internet, 14.8 miles away.
What are the flood, water and hazard risks at Old Thompson Mill?
At the county level, FEMA's National Risk Index rates Rensselaer 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 Rensselaer County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| REYNOLDS | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 63.8 |
| Troy Landfill Solar 2 | Brownfield | — | 3 MW | 4.3 yrs | 63.7 |
| ALPS | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 62.1 |
| EASTOVER | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 61.5 |
| OZ Rensselaer | Greenfield | — | — | 4.3 yrs | 58.7 |
| TAP156248 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.6 |
| TAP161120 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.6 |
| MAPLEWOOD | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.6 |
Old Thompson Mill: common questions
What is the DC Readiness score of Old Thompson Mill?
Old Thompson Mill scores 50.7/100 on the GridCensus DC Readiness scale, rated fair. It ranks 51st of 60 scored sites in Rensselaer County. The Rensselaer County average is 54.3 and the New York average is 54.0.
Which electric utility serves Old Thompson Mill?
NIAGARA MOHAWK POWER CORP. (investor owned) holds the retail service territory that contains the site; its holding company is NATIONAL GRID GROUP PLC.
What grid region is Old Thompson Mill in?
Old Thompson Mill is in the NYISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Old Thompson Mill from an internet exchange?
The nearest internet exchange facility is TurnKey Internet, about 14.8 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, “Old Thompson Mill, Rensselaer County, NY”, https://gridcensus.com/datacenter-sites/new-york/rensselaer-county/old-thompson-mill-d3ceea83 (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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