AI data center sites in Maryland
24 Maryland 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 |
|---|---|---|---|
| 65 | 988 MW | 15.3¢/kWh | |
| 62 | 915 MW | 15.3¢/kWh | |
| 56 | 1.7 GW | 15.3¢/kWh | |
| 55 | 885 MW | 15.3¢/kWh | |
| 54 | 650 MW | 15.3¢/kWh | |
| 53 | 180 MW | 15.3¢/kWh | |
| 53 | 90 MW | 15.3¢/kWh | |
| 50 | 152 MW | 15.3¢/kWh | |
| 46 | 905 MW | 15.3¢/kWh | |
| 45 | 537 MW | 15.3¢/kWh | |
| 39 | 655 MW | 15.3¢/kWh | |
| 38 | 454 MW | 15.3¢/kWh | |
| 38 | - | 15.3¢/kWh | |
| 35 | 690 MW | 15.3¢/kWh | |
| 33 | 102 MW | 15.3¢/kWh | |
| 32 | - | 15.3¢/kWh | |
| 31 | 464 MW | 15.3¢/kWh | |
| 30 | 262 MW | 15.3¢/kWh | |
| 30 | - | 15.3¢/kWh | |
| 29 | - | 15.3¢/kWh | |
| 27 | 188 MW | 15.3¢/kWh | |
| 24 | 237 MW | 15.3¢/kWh | |
| 24 | 215 MW | 15.3¢/kWh | |
| 23 | 56 MW | 15.3¢/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 Maryland counties for a large AI load are Prince George's County (65), Anne Arundel County (62) and Charles County (56) on the site score. Maryland sits in PJM; its ISO queues hold 10 GW of active generation and storage requests, 977 MW of them with a signed interconnection agreement, and it has 10 substations at 345 kV and up.
Industrial power averaged 15.3¢/kWh (EIA, July 2026 YTD), against 12.3¢/kWh a year earlier, the 42nd lowest of the 50 states and DC. Maryland has a data center sales and use tax exemption in force. We track 0 AI campuses and 3 GPU-ready colocation facilities here.
Top 6 counties in detail
1. Prince George's CountyPJM
Site score 65 of 100
- Transmission
- 25/25
- Generation pipeline
- 7/20
- Industrial power price
- 9/20
- Existing and retiring plants
- 14/15
- Sales tax exemption
- 10/10
- Data center activity
- 0/10
- Market
- PJM
- Queue (active)
- 988 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 12 MW
- Top substation
- 500 kV
- Substations 230 kV+
- 16
- Operating plants
- 3.1 GW
- Retired or retiring
- 755 MW
- Industrial power, MD
- 15.3¢/kWh
- Sales tax exemption
- Yes
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| Chalk Point 230kVPJM AH1-552, in service 2025-06 | Chalk Point 230kV | 810 | Solar or wind + storage | In study |
| Talbert 230kVPJM AH2-332, in service 2025-12 | Talbert 230kV | 115 | Storage | In study |
| Burches Hill-Chalk Point 500kVPJM AH2-269A, in service 2026-11 | Burches Hill-Chalk Point 500kV | 45 | Gas | In study |
| Ritchie 69 kVPJM AG2-520, in service 2024-03 | Ritchie 69 kV | 17 | Solar | In study |
| TBD 69kVPJM AH2-065, in service 2022-12 | TBD 69kV | 2 | Solar | In study |
Substations, 115 kV and up
- CHALK POINT · 14 lines500 kV
- BURCHES HILL · 9 lines500 kV
- OAK GROVE · 16 lines230 kV
- BURTONSVILLE · 15 lines230 kV
- BOWIE · 15 lines230 kV
- TALBERT TAP · 11 lines230 kV
- AQUASCO · 10 lines230 kV
- METZEROTT ROAD · 8 lines230 kV
Planned, retiring and retired plants
- Chalk Point Steam · Coal, retired 2021728 MW
- UMCP CHP Plant · Gas, retired 202527 MW
2. Anne Arundel CountyPJM
Site score 62 of 100
- Transmission
- 21/25
- Generation pipeline
- 6/20
- Industrial power price
- 9/20
- Existing and retiring plants
- 15/15
- Sales tax exemption
- 10/10
- Data center activity
- 1/10
- Market
- PJM
- Queue (active)
- 915 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 0 MW
- Top substation
- 500 kV
- Substations 230 kV+
- 3
- Operating plants
- 2.2 GW
- Retired or retiring
- 2.3 GW
- Industrial power, MD
- 15.3¢/kWh
- Sales tax exemption
- Yes
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| Chapel Energy Storage FacilityPJM AG1-104, in service 2024-06 | Waugh Chapel 230 kV | 300 | Storage | In study |
| Brandon Shores 230 kVPJM AG2-207, in service 2023-03 | Brandon Shores 230 kV | 275 | Storage | In study |
| Brandon Shores 230 kVPJM AG2-319, in service 2025-12 | Brandon Shores 230 kV | 150 | Storage | In study |
| Wagner 115 kVPJM AG2-225, in service 2022-12 | Wagner 115 kV | 115 | Storage | In study |
| Waugh Chapel 115 kVPJM AG2-617, in service 2023-12 | Waugh Chapel 115 kV | 55 | Solar | In study |
| Columbia-Geisinger Tap #1 69 kVPJM AF2-434, in service 2022-06 | Columbia-Geisinger Tap #1 69 kV | 20 | Solar | In study |
Substations, 115 kV and up
- WAUGH CHAPEL · 15 lines500 kV
- WAGNER · 9 lines230 kV
- BRANDON SHORES · 8 lines230 kV
- WAUGH CHAPEL · 8 lines115 kV
- PUMPHREY · 4 lines115 kV
- Unnamed · 4 lines115 kV
- Unnamed · 4 lines115 kV
- MARRIOTT HILL · 4 lines115 kV
Planned, retiring and retired plants
- Brandon Shores · Coal, retiring 20291.4 GW
- Herbert A Wagner · Gas, retiring 2029774 MW
- Herbert A Wagner · Gas, retired 2025149 MW
Data centers, AI campuses and mining sites
- TierPoint Baltimore - BWI · GPU colocation, Linthicum
Colocation from our GPU colocation list; mining sites from the miner AI conversion tracker.
3. Charles CountyPJM
Site score 56 of 100
- Transmission
- 16/25
- Generation pipeline
- 9/20
- Industrial power price
- 9/20
- Existing and retiring plants
- 13/15
- Sales tax exemption
- 10/10
- Data center activity
- 0/10
- Market
- PJM
- Queue (active)
- 1.7 GW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 0 MW
- Top substation
- 230 kV
- Substations 230 kV+
- 4
- Operating plants
- 1.1 GW
- Retired or retiring
- 1.3 GW
- Industrial power, MD
- 15.3¢/kWh
- Sales tax exemption
- Yes
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| Morgantown 230 kVPJM AI2-457, in service 2027-10 | Morgantown 230 kV | 1,122 | Storage | In study |
| Oak Grove - Hawkins Gate 230kVPJM AH2-265, in service 2026-03 | Oak Grove - Hawkins Gate 230kV | 200 | Storage | In study |
| Morgantown 230 kVPJM AG2-301, in service 2023-12 | Morgantown 230 kV | 150 | Storage | In study |
| Morgantown 230 kVPJM AG2-618, in service 2023-12 | Morgantown 230 kV | 110 | Solar | In study |
| Hughesville-Cedarville 69kVPJM AH2-266, in service 2026-03 | Hughesville-Cedarville 69kV | 25 | Solar | In study |
| Charles County Solar IIPJM AF1-003, in service 2027-09 | Hawkins Gate-Billingsley Rd 69 kV | 20 | Solar | Suspended |
| Charles County Solar IPJM AF1-005, in service 2028-09 | Grayton-Ripley 69 kV | 20 | Solar | Suspended |
| Bolton - Bennsville 69 kVPJM AG2-647, in service 2023-03 | Bolton - Bennsville 69 kV | 9 | Solar | In study |
Substations, 115 kV and up
- MORGANTOWN · 10 lines230 kV
- HAWKINS GATE · 8 lines230 kV
- RYCEVILLE · 6 lines230 kV
- MORGANTOWN · 4 lines230 kV
Planned, retiring and retired plants
- Morgantown Generating Plant · Coal, retired 20221.3 GW
4. Cecil CountyPJM
Site score 55 of 100
- Transmission
- 21/25
- Generation pipeline
- 7/20
- Industrial power price
- 9/20
- Existing and retiring plants
- 9/15
- Sales tax exemption
- 10/10
- Data center activity
- 0/10
- Market
- PJM
- Queue (active)
- 885 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 2 MW
- Top substation
- 500 kV
- Substations 230 kV+
- 3
- Operating plants
- 1.9 GW
- Retired or retiring
- 0 MW
- Industrial power, MD
- 15.3¢/kWh
- Sales tax exemption
- Yes
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| Rock Springs 500 kVPJM AI2-054, in service 2028-06 | Rock Springs 500 kV | 784 | Storage | In study |
| Colora 230 kVPJM AI2-307, in service 2026-09 | Colora 230 kV | 101 | Storage | In study |
Substations, 115 kV and up
- ROCK SPRINGS · 2 lines500 kV
- COLORA · 6 lines230 kV
- COLORA · 2 lines230 kV
5. Montgomery CountyPJM
Site score 54 of 100
- Transmission
- 25/25
- Generation pipeline
- 5/20
- Industrial power price
- 9/20
- Existing and retiring plants
- 5/15
- Sales tax exemption
- 10/10
- Data center activity
- 0/10
- Market
- PJM
- Queue (active)
- 650 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 0 MW
- Top substation
- 500 kV
- Substations 230 kV+
- 8
- Operating plants
- 500 MW
- Retired or retiring
- 21 MW
- Industrial power, MD
- 15.3¢/kWh
- Sales tax exemption
- Yes
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| Fourth QuarterPJM AG1-483 - moved to TC1, in service 2024-06 | Dickerson 230 kV | 500 | Storage | In study |
| Dickerson 230 kVPJM AG2-302, in service 2023-12 | Dickerson 230 kV | 150 | Storage | In study |
Substations, 115 kV and up
- BRIGHTON · 11 lines500 kV
- MOUNT ZION · 12 lines230 kV
- QUINCE ORCHARD · 12 lines230 kV
- BELLS MILL · 6 lines230 kV
- DICKERSON · 6 lines230 kV
- DICKERSON · 6 lines230 kV
- MOUNT ZION · 4 lines230 kV
- CLARKSBURG · 2 lines230 kV
6. Calvert CountyPJM
Site score 53 of 100
- Transmission
- 23/25
- Generation pipeline
- 3/20
- Industrial power price
- 9/20
- Existing and retiring plants
- 9/15
- Sales tax exemption
- 10/10
- Data center activity
- 0/10
- Market
- PJM
- Queue (active)
- 180 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 0 MW
- Top substation
- 500 kV
- Substations 230 kV+
- 4
- Operating plants
- 1.9 GW
- Retired or retiring
- 0 MW
- Industrial power, MD
- 15.3¢/kWh
- Sales tax exemption
- Yes
Largest queue requests
| Project | Point of interconnection | MW | Type | Stage |
|---|---|---|---|---|
| Sollers 230kVPJM AH2-423, in service 2025-12 | Sollers 230kV | 180 | Storage | In study |
Substations, 115 kV and up
- CALVERT CLIFFS · 3 lines500 kV
- HOLLAND CLIFF · 3 lines230 kV
- Unnamed · 3 lines230 kV
- SOLLERS WARF · 2 lines230 kV
Data center tax exemption in Maryland
Maryland qualified data center sales and use tax exemption (Tax-General § 11-239)
Sales and leases of qualified data center personal property (computer equipment and software, HVAC and mechanical systems, electrical infrastructure such as substations, generators and UPS) are exempt for certified centers that invest at least $2 million in Tier I areas (Baltimore City, nine named counties and Opportunity Zones) or $5 million elsewhere and create at least five qualified positions paying 150% of the state minimum wage within three years; electricity used to run the center is not exempt, and the annually renewed certificate runs up to 10 years, or up to 20 years with at least $250 million invested.
Recent change: 2026 HB 560 proposed repealing the exemption; the General Assembly's bill page shows no action after its February 2026 House Ways and Means hearing, so it was not enacted.
Source: Maryland General Assembly, accessed 2026-10-17. General information, not tax advice; ask your tax advisor.
Large-load requests in PJM
PJM forecasts its summer peak at 222,106 MW in 2036, up 65,733 MW in ten years, with large load adjustments for data center growth in 14 transmission zones, including Dominion (Virginia), AEP, ComEd and PECO. Near-term adjustments now require firm commitments, so they came down from the 2025 forecast. PJM, Jan 14, 2026
Busiest points of interconnection in Maryland
| # | Point of interconnection | County | ISO | Requests | Queued MW | Mostly |
|---|---|---|---|---|---|---|
| 1 | Morgantown 230 kV | Charles County, MD | PJM | 3 | 1,382 | Storage |
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: PJM (Mid-Atlantic and Midwest).
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Discuss a transaction
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