Johnson Hall
IndustrialKennebec County, Maine · ISO-NE
At a glance
Johnson Hall is an industrial datacenter candidate site in Kennebec County, Maine, scoring 52.1/100 DC Readiness — 34th of 88 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 Johnson Hall compare with other sites in Kennebec County?
Johnson Hall ranks 34th of 88 scored candidate sites in Kennebec County. Its 52.1/100 is roughly in line with the county average of 53.1. 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 natural hazard (85 vs 84) and its weakest is fiber connectivity (66 vs 71). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Johnson Hall to power, fiber and other datacenters?
For connectivity, the nearest internet exchange facility is CENTRA PWM1 - Portland, Maine (340 Cumberland) at 46.4 miles. 9 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Oxford Networks, 24.3 miles away.
What are the flood, water and hazard risks at Johnson Hall?
At the county level, FEMA's National Risk Index rates Kennebec 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 Kennebec County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| ALBION ROAD | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 63.3 |
| COOPERS MILLS | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 62.8 |
| BROWNS CROSSING | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.0 |
| BOWMAN STREET | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.9 |
| PUDDLEDOCK RD | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.9 |
| UNKNOWN133016 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.8 |
| UNKNOWN133030 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.4 |
| WINSLOW | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.4 |
Johnson Hall: common questions
What is the DC Readiness score of Johnson Hall?
Johnson Hall scores 52.1/100 on the GridCensus DC Readiness scale, rated fair. It ranks 34th of 88 scored sites in Kennebec County. The Kennebec County average is 53.1 and the Maine average is 53.5.
Which electric utility serves Johnson Hall?
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 Johnson Hall in?
Johnson Hall is in the ISO-NE region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Johnson Hall from an internet exchange?
The nearest internet exchange facility is CENTRA PWM1 - Portland, Maine (340 Cumberland), about 46.4 miles away; 9 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, “Johnson Hall, Kennebec County, ME”, https://gridcensus.com/datacenter-sites/maine/kennebec-county/johnson-hall-5793c655 (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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