AI data center sites in Maine
16 Maine counties scored on transmission, the interconnection queue, power price and tax. Updated October 18, 2026.
Open a county for its queue requests, substations, plants and data centers.
| County | Score | Pipeline | Power price |
|---|---|---|---|
| 39 | 27 MW | 15.6¢/kWh | |
| 33 | 271 MW | 15.6¢/kWh | |
| 33 | 68 MW | 15.6¢/kWh | |
| 27 | 40 MW | 15.6¢/kWh | |
| 27 | - | 15.6¢/kWh | |
| 25 | - | 15.6¢/kWh | |
| 20 | 161 MW | 15.6¢/kWh | |
| 20 | 102 MW | 15.6¢/kWh | |
| 19 | 20 MW | 15.6¢/kWh | |
| 19 | - | 15.6¢/kWh | |
| 18 | 268 MW | 15.6¢/kWh | |
| 16 | - | 15.6¢/kWh | |
| 15 | - | 15.6¢/kWh | |
| 15 | 1 MW | 15.6¢/kWh | |
| 14 | 17 MW | 15.6¢/kWh | |
| 12 | - | 15.6¢/kWh |
Pipeline: active generation and storage requests in the ISO queue, or EIA planned plants where larger (outside the ISOs). Top kV: highest substation voltage. Power price: the state's industrial average. DCs: GPU colocation, mining sites and AI campuses.
What the data shows
The strongest Maine counties for a large AI load are Cumberland County (39), York County (33) and Penobscot County (33) on the site score. Maine sits in ISO-NE; its ISO queues hold 643 MW of active generation and storage requests, and it has 14 substations at 345 kV and up.
Industrial power averaged 15.6¢/kWh (EIA, July 2026 YTD), against 15.1¢/kWh a year earlier, the 43rd lowest of the 50 states and DC. Maine has no data center-specific sales tax exemption. We track 0 AI campuses and 0 GPU-ready colocation facilities here.
Top 6 counties in detail
1. Cumberland CountyISO-NE
Site score 39 of 100
- Transmission
- 20/25
- Generation pipeline
- 2/20
- Industrial power price
- 8/20
- Existing and retiring plants
- 9/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- ISO-NE
- Queue (active)
- 17 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 27 MW
- Top substation
- 345 kV
- Substations 230 kV+
- 4
- Operating plants
- 1.8 GW
- Retired or retiring
- 0 MW
- Industrial power, ME
- 15.6¢/kWh
- Sales tax exemption
- None
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| West Baldwin SolarISO-NE 935, in service 2029-09 | CMP 34.5 kv Line, Section 91 | 17 | Solar | In study |
Substations, 115 kV and up
- SURROWIEC · 13 lines345 kV
- SOUTH GORHAM · 8 lines345 kV
- YARMOUTH · 3 lines345 kV
- RAVEN FARM · 3 lines345 kV
- KIMBALL ROAD · 5 lines115 kV
- WESTBROOK · 4 lines115 kV
- MOSHERS · 4 lines115 kV
- SPRING STREET · 4 lines115 kV
2. York CountyISO-NE
Site score 33 of 100
- Transmission
- 18/25
- Generation pipeline
- 4/20
- Industrial power price
- 8/20
- Existing and retiring plants
- 3/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- ISO-NE
- Queue (active)
- 36 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 271 MW
- Top substation
- 345 kV
- Substations 230 kV+
- 3
- Operating plants
- 158 MW
- Retired or retiring
- 4 MW
- Industrial power, ME
- 15.6¢/kWh
- Sales tax exemption
- None
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| GDC Saco SolarISO-NE 929, in service 2027-11 | CMP Louden 34.5kV substation | 20 | Solar | In study |
| Emery Meadow SolarISO-NE 1021, in service 2027-09 | CMP 34.5 kV, Section 182 | 16 | Solar | In study |
Substations, 115 kV and up
- MAGUIRE ROAD · 8 lines345 kV
- THREE RIVERS · 7 lines345 kV
- BUXTON · 5 lines345 kV
- LOUDEN · 4 lines115 kV
- Unnamed · 3 lines115 kV
- WEST BUXTON · 2 lines115 kV
- WATERBORO · 2 lines115 kV
- QUAKER HILL · 2 lines115 kV
Planned, retiring and retired plants
- Freedom Pine Solar · Solar, planned 2029250 MW
3. Penobscot CountyISO-NE
Site score 33 of 100
- Transmission
- 16/25
- Generation pipeline
- 2/20
- Industrial power price
- 8/20
- Existing and retiring plants
- 7/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- ISO-NE
- Queue (active)
- 0 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 68 MW
- Top substation
- 345 kV
- Substations 230 kV+
- 2
- Operating plants
- 1 GW
- Retired or retiring
- 2 MW
- Industrial power, ME
- 15.6¢/kWh
- Sales tax exemption
- None
Substations, 115 kV and up
- ORRINGTON · 11 lines345 kV
- CHESTER · 4 lines345 kV
- GRAHAM · 5 lines115 kV
- Unnamed · 3 lines115 kV
- Unnamed · 3 lines115 kV
- PENOBSCOT ENERGY RECOVERY · 1 lines115 kV
Planned, retiring and retired plants
- Crooked Trail Solar · Solar, planned 202968 MW
4. Androscoggin CountyISO-NE
Site score 27 of 100
- Transmission
- 14/25
- Generation pipeline
- 2/20
- Industrial power price
- 8/20
- Existing and retiring plants
- 3/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- ISO-NE
- Queue (active)
- 40 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 30 MW
- Top substation
- 345 kV
- Substations 230 kV+
- 1
- Operating plants
- 196 MW
- Retired or retiring
- 0 MW
- Industrial power, ME
- 15.6¢/kWh
- Sales tax exemption
- None
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| BD Solar Church HillISO-NE 953, in service 2028-06 | 101105 Augusta East w New Breaker | 20 | Solar | In study |
| Turner Meadow SolarISO-NE 1139, in service 2027-11 | CMP 34.5kV Line 50 | 20 | Solar | In study |
Substations, 115 kV and up
- LARRABEE ROAD · 10 lines345 kV
- LIVERMORE FALLS · 5 lines115 kV
- GULF ISLAND · 4 lines115 kV
- Unnamed · 3 lines115 kV
- CROWLEYS · 3 lines115 kV
- Unnamed · 3 lines115 kV
- LEWISTON LOWER · 2 lines115 kV
- HOTEL ROAD · 2 lines115 kV
5. Kennebec CountyISO-NE
Site score 27 of 100
- Transmission
- 16/25
- Generation pipeline
- 0/20
- Industrial power price
- 8/20
- Existing and retiring plants
- 2/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- ISO-NE
- Queue (active)
- 0 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 0 MW
- Top substation
- 345 kV
- Substations 230 kV+
- 2
- Operating plants
- 136 MW
- Retired or retiring
- 0 MW
- Industrial power, ME
- 15.6¢/kWh
- Sales tax exemption
- None
Substations, 115 kV and up
- COOPERS MILLS · 11 lines345 kV
- ALBION ROAD · 7 lines345 kV
- Unnamed · 4 lines115 kV
- BOWMAN STREET · 3 lines115 kV
- Unnamed · 3 lines115 kV
- PUDDLEDOCK RD · 2 lines115 kV
- WINSLOW · 2 lines115 kV
- BROWNS CROSSING · 2 lines115 kV
6. Lincoln CountyISO-NE
Site score 25 of 100
- Transmission
- 16/25
- Generation pipeline
- 0/20
- Industrial power price
- 8/20
- Existing and retiring plants
- 1/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- ISO-NE
- Queue (active)
- 0 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 0 MW
- Top substation
- 345 kV
- Substations 230 kV+
- 2
- Operating plants
- 12 MW
- Retired or retiring
- 0 MW
- Industrial power, ME
- 15.6¢/kWh
- Sales tax exemption
- None
Substations, 115 kV and up
- MAINE YANKEE · 6 lines345 kV
- MASON · 5 lines345 kV
- NEWCASTLE · 2 lines115 kV
Data center tax exemption in Maine
No data center-specific sales tax exemption found; a 2026 law (P.L. 2025, ch. 768, LD 713) instead excludes data centers that begin operations on or after August 1, 2026 from the Business Equipment Tax Exemption and the Dirigo Business Incentives Program.
Recent change: LD 713, approved April 23, 2026, removed data centers starting operations on or after August 1, 2026 from BETE and Dirigo incentives and ordered a state study of data center incentives.
Source: Maine Legislature, 2026-04-23. General information, not tax advice; ask your tax advisor.
How the score works
Six parts out of 100: transmission (25), generation in the queue (20), the state's industrial power price (20), existing and retiring plants (15), sales tax exemption (10) and data center activity (10). The site finder's methodology prints each formula and every source with its date. Markets: ISO New England.
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Discuss a transaction
Funding a data center or the GPUs going into one in Maine? Tell us about the site and the capital you need, and we will come back with the lenders and the structure that fit. Operators raising debt for a cluster can start at gpulenders.com.
Prefer email? hello@amcompute.com