Data Centers in Maine
Maine has 12 data centers identified from primary sources across 3 counties, run by 5 operators, against an industry reference count of 11. Cumberland County holds the largest cluster with 8. ISO-NE runs the grid for most of the state. 2 state measures on record (enacted) and 1 local pause; 1 named project delayed or blocked.
Where Maine's data centers stand
Key facts
- Data centers identified
- 12 from the operators' own facility lists, PeeringDB, OpenStreetMap and Wikidata
- Target count
- 11 facilities in the industry reference count for Maine; this map holds 12 of them (109.1 percent), -1 still to identify
- Largest cluster
- Cumberland County with 8 facilities
- Largest operator
- FirstLight with 7 facilities
- Grid operator
- ISO-NE and NON-RTO
- State measures
- 2 on record, strongest status enacted
- Local pauses
- 1 city or county moratoria · 6 local restrictions on the delay watchlist
- Water measures
- 1 state and local, plus the federal measures that apply everywhere
Maine data centers, in short
Maine has 12 data centers identified from primary sources, spread across 5 cities and counties and run by 5 operators. The largest concentration is Portland, with 5 data centers, followed by Brunswick with 3 and Bangor with 2.
The operators with the most data centers in Maine are FirstLight (7), CENTRA Digital Interconnect (1), Consolidated Communications (1), NNENIX (1), University of Maine System (1). Colocation and interconnection providers appear most often because they publish building-level detail; hyperscale campuses appear where the operator or the county names the individual buildings.
Not every operator discloses size. In Maine, 3 publish a floor area and 1 publish a power figure, and each figure is shown against the data center it belongs to rather than added into one number. They are not the same measurement: one operator states the floor area of a single building, another the full capacity of a campus it has only announced.
ISO-NE runs the wholesale power market and the high-voltage grid for most of Maine. 2 statewide measures governing data centers are on record, alongside 1 local pause. 1 named project in Maine is delayed, blocked or under challenge.
Maine data centers by city
Every data center identified in Maine, grouped by the city or county it stands in, 12 of them across 5 places. Each entry names the operator and links to the source that states it.
Data centers in Portland, Maine
- CENTRA PWM1 - Portland, Maine (340 Cumberland) CENTRA Digital Interconnect 340 Cumberland Ave 1,100 sq ft1 MW7 networks
- Consolidated - 45 Forest Ave. Consolidated Communications 45 Forest Ave 1 networks
- FirstLight data center FirstLight
- FirstLight Portland, ME Data Center FirstLight
- FirstLight Regen Hut NNENIX 9 Westland Avenue 5 networks
Data centers in Brunswick, Maine
- FirstLight Brunswick, ME Data Center FirstLight 52,000 sq ft
- FirstLight data center FirstLight 52,000 sq ft
- Oxford Networks FirstLight 14 Resilient Circle
Data centers in Bangor, Maine
- FirstLight Bangor, ME Data Center FirstLight
- FirstLight data center FirstLight
Data centers in Orono, Maine
- University of Maine - Neville Telecom Colo University of Maine System 5752 Neville Hall 3 networks
Data centers in Unincorporated Aroostook County, Maine
- Datacenter
Floor area and power appear only where the operator or a government record publishes them. A building the sources describe without naming it is listed as a data center building at its county.
Where they cluster, and who runs them
Facilities by county 3
Operators 5
Cities 4
The rules and the pipeline in Maine
Maine has 2 state measures on record (enacted), 1 local pause, and 1 state or local water measure. ISO-NE runs the grid there. Each tracker below holds the full record for Maine, with every entry sourced.
Maine data centers, answered from the record
How many data centers are in Maine?
The industry reference count for Maine is 11 facilities. This map places 12 of them from primary sources, each with a source record you can open, and every entry names the operator, the county, and the grid operator that serves it. The rest are mostly small regional colocation providers and enterprise buildings that no public register describes.
Where are Maine's data centers?
They are listed on this page city by city. By city: Portland (5), Brunswick (3), Bangor (2), Orono (1). By county: Cumberland County (8), Penobscot County (3), Aroostook County (1). Every data center identified in Maine appears under the city or county it stands in, with its operator and the source that names it.
Who operates data centers in Maine?
5 operators appear in the registers for Maine. The largest by facility count: FirstLight (7), CENTRA Digital Interconnect (1), Consolidated Communications (1), NNENIX (1), University of Maine System (1). Interconnection-heavy providers are over-represented because PeeringDB records where networks meet; hyperscalers appear where contributors have mapped their buildings.
Does Maine have a data center moratorium?
Maine has 2 state measures on record: LD 713: Data centers excluded from state tax incentive programs (enacted, Apr 2026); LD 307: Maine Data Center Coordination Council; temporary limitation on data centers (failed, Apr 2026). 1 city or county pause is on record locally. The Maine Data Center Moratorium Tracker carries each measure with its primary source and a weekly changelog.
Which grid operator serves Maine data centers?
ISO-NE runs the wholesale power market and the high-voltage transmission system for most of Maine; NON-RTO covers the rest. Most of state ISO-NE; northern Maine (Aroostook/Washington counties) has no direct tie to ISO-NE, administered by NMISA, balanced via New Brunswick.
Are new data centers being built or delayed in Maine?
1 named project in Maine is delayed, blocked, or under challenge, with 6 local restrictions, 2 jurisdictional actions, 0 utility dockets, and 0 flagged queue row or large-load studys. The capital atlas records 0 named sites in Maine and 1 project blocked, delayed, or halted.
Facility layer: PeeringDB (Acceptable Use Policy), OpenStreetMap (ODbL, © OpenStreetMap contributors), Wikidata (CC0), US Census Bureau boundaries. Tracker layers: the SAVRN Moratorium Tracker, Water Tracker, Grid Operator Watchlist, Delay Watchlist, and Capital Atlas, each primary-sourced. Method on the national map.
Maine across the SAVRN trackers
The same state followed through the money, the policy, the water and the delays. Each page is primary-sourced and refreshed on its own schedule, and each links back here.