M.W. Sewall Clipper Mart
IndustrialSagadahoc County, Maine · ISO-NE
At a glance
M.W. Sewall Clipper Mart is an industrial datacenter candidate site in Sagadahoc County, Maine, scoring 53.8/100 DC Readiness — 14th of 39 scored sites in the county. It sits in the ISO-NE grid region and the CENTRAL MAINE POWER CO 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
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Site location
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How does M.W. Sewall Clipper Mart compare with other sites in Sagadahoc County?
M.W. Sewall Clipper Mart ranks 14th of 39 scored candidate sites in Sagadahoc County. Its 53.8/100 is roughly in line with the county average of 54.7. It is roughly in line with the Maine average of 53.5 and roughly in line with the national average of 53.2.
Against the Maine average, its strongest sub-score is fiber connectivity (73 vs 71) and its weakest is power availability (30 vs 33). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is M.W. Sewall Clipper Mart to power, fiber and other datacenters?
For connectivity, the nearest internet exchange facility is CENTRA PWM1 - Portland, Maine (340 Cumberland) at 27.9 miles. 8 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Oxford Networks, 5.1 miles away.
What are the flood, water and hazard risks at M.W. Sewall Clipper Mart?
At the county level, FEMA's National Risk Index rates Sagadahoc County "Relatively Low".
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 Sagadahoc County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| MAINE YANKEE | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.7 |
| TOPSHAM | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 60.0 |
| TAP136734 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 59.9 |
| BATH | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 59.8 |
| Greenfield (SURROWIEC - MAINE YANKEE) | Greenfield | 345 kV | 600 MW | 4.3 yrs | 59.2 |
| OZ Sagadahoc | Greenfield | — | — | 4.3 yrs | 55.7 |
| Maine Street Station | Industrial | — | — | 4.3 yrs | 55.1 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 54.1 |
M.W. Sewall Clipper Mart: common questions
What is the DC Readiness score of M.W. Sewall Clipper Mart?
M.W. Sewall Clipper Mart scores 53.8/100 on the GridCensus DC Readiness scale, rated fair. It ranks 14th of 39 scored sites in Sagadahoc County. The Sagadahoc County average is 54.7 and the Maine average is 53.5.
Which electric utility serves M.W. Sewall Clipper Mart?
CENTRAL MAINE POWER CO (investor owned) holds the retail service territory that contains the site; its holding company is IBERDROLA USA INC.
What grid region is M.W. Sewall Clipper Mart in?
M.W. Sewall Clipper Mart is in the ISO-NE region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is M.W. Sewall Clipper Mart from an internet exchange?
The nearest internet exchange facility is CENTRA PWM1 - Portland, Maine (340 Cumberland), about 27.9 miles away; 8 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, “M.W. Sewall Clipper Mart, Sagadahoc County, ME”, https://gridcensus.com/datacenter-sites/maine/sagadahoc-county/m-w-sewall-clipper-mart-778f13a5 (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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