Datacenter Sites in Maryland
Maryland has 1,031 scored datacenter candidate sites averaging 52.9/100 DC Readiness. Substation-Adjacent parcels lead the inventory (314 sites). Most sites interconnect through PJM. The state's candidate sites carry a catalogued aggregate of 58.2k MW and average a 5.2 yrs interconnection-queue wait.
At a glance
Maryland has 1,031 scored datacenter candidate sites, the 42nd-most of the 50 states, DC and Puerto Rico, averaging 52.9/100 DC Readiness against a national average of 53.0. Its average score ranks 34th among states. The state also has 31 operating datacenters and 18 internet exchange facilities on record.
How does Maryland compare with other states for datacenter sites?
By number of scored candidate sites, Maryland ranks 42nd of the 50 states, DC and Puerto Rico (1,031 of 147,272 nationally, 0.7%). Its average DC Readiness of 52.9/100 ranks 34th and is roughly in line with the national average of 53.0. The average interconnection-queue wait at its sites, 5.2-year, is the 47th-shortest of the group (national 4.2-year).
Across the five headline sub-scores, Maryland is strongest relative to the nation on water (83.7 vs 72.3 nationally) and weakest on speed to power (35.6 vs 50.0). Power and speed to power carry 20% of the score each, fiber 12%, water 7% and hazard 6%.
Which counties in Maryland have the most datacenter sites?
Baltimore County (164 sites, average 54.2), Allegany County (81 sites, average 48.9), and Garrett County (76 sites, average 48.9) hold the largest inventories. Together the top 3 account for 31% of the state's scored sites. Howard County has the highest average score among counties with at least 10 sites (61.2/100). 24 counties have five or more scored sites and their own county page.
What kinds of sites and grid regions are in Maryland?
Substation-Adjacent parcels are the largest category (314, 30%), followed by greenfield (256) and industrial (242). Every scored site sits in the PJM region.
By site type
By grid region
- PJM1,031
Average sub-score profile
How Maryland's candidate sites score on each DC Readiness dimension (0–100 average).
Top 25 datacenter sites in Maryland
Ranked by DC Readiness.
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| ROCK SPRINGS | Substation-Adjacent | Harford County | 500 kV | 1,000 MW | 5.3 yrs | 68.8 |
| WAUGH CHAPEL | Substation-Adjacent | Anne Arundel County | 500 kV | 1,000 MW | 5.3 yrs | 67.6 |
| BURCHES HILL | Substation-Adjacent | Prince George's County | 500 kV | 1,000 MW | 5.3 yrs | 66.9 |
| BRIGHTON | Substation-Adjacent | Howard County | 500 kV | 1,000 MW | 5.3 yrs | 66.8 |
| UNKNOWN162182 | Substation-Adjacent | Prince George's County | 500 kV | 1,000 MW | 5.3 yrs | 66.7 |
| Morgantown Generating Plant | Brownfield | Charles County | 230 kV | 1,418 MW | 5.3 yrs | 66.4 |
| TOKOMA | Substation-Adjacent | District of Columbia | 230 kV | 300 MW | 5.3 yrs | 64.9 |
| UNKNOWN123195 | Substation-Adjacent | Baltimore city | 230 kV | 300 MW | 5.3 yrs | 64.9 |
| CONASTONE | Substation-Adjacent | Harford County | 500 kV | 1,000 MW | 5.3 yrs | 64.7 |
| DOUBS | Substation-Adjacent | Frederick County | 500 kV | 1,000 MW | 5.3 yrs | 64.6 |
| TAP139322 | Substation-Adjacent | Frederick County | 500 kV | 1,000 MW | 5.3 yrs | 64.4 |
| BELLS MILL | Substation-Adjacent | Montgomery County | 230 kV | 300 MW | 5.3 yrs | 64.4 |
| TAP139171 | Substation-Adjacent | Howard County | 230 kV | 300 MW | 5.3 yrs | 64.3 |
| HIGH RIDGE | Substation-Adjacent | Howard County | 230 kV | 300 MW | 5.3 yrs | 64.3 |
| BRANDON SHORES | Substation-Adjacent | Baltimore city | 230 kV | 300 MW | 5.3 yrs | 64.1 |
| METZEROTT ROAD | Substation-Adjacent | District of Columbia | 230 kV | 300 MW | 5.3 yrs | 63.9 |
| HOWARD | Substation-Adjacent | Howard County | 230 kV | 300 MW | 5.3 yrs | 63.5 |
| DICKERSON | Substation-Adjacent | Loudoun County | 230 kV | 300 MW | 5.3 yrs | 63.5 |
| UNKNOWN122985 | Substation-Adjacent | Howard County | 230 kV | 300 MW | 5.3 yrs | 63.5 |
| GRANITE | Substation-Adjacent | Howard County | 230 kV | 300 MW | 5.3 yrs | 63.3 |
| TAP139174 | Substation-Adjacent | Anne Arundel County | 230 kV | 300 MW | 5.3 yrs | 63.3 |
| TAP139085 | Substation-Adjacent | Howard County | 230 kV | 300 MW | 5.3 yrs | 63.3 |
| RITCHIE | Substation-Adjacent | Prince George's County | 230 kV | 300 MW | 5.3 yrs | 63.1 |
| BUENA VISTA | Substation-Adjacent | Prince George's County | 230 kV | 300 MW | 5.3 yrs | 63.1 |
| QUINCE ORCHARD | Substation-Adjacent | Montgomery County | 230 kV | 300 MW | 5.3 yrs | 63.0 |
Counties in Maryland
24 counties with five or more scored sites.
Operating datacenters in Maryland
31 operating datacenter facilities in Maryland are on record, the 24th-most of any state. Baltimore has the largest cluster (4 facilities). The operators with the most facilities here are Amazon Web Services (5), AiNET (2), Expedient (2). Footprints are recorded for 8 of them, totalling about 0.5 million square feet.
Baltimore (4)
- Baltimore Technology Park · TierPoint, LLC
- AiNET One Market Center · AiNET
- Crown Castle Baltimore · Crown Castle Fiber
- Expedient Owings Mills · Expedient
Laurel (2)
- Datacenter 01143804764
- Digital Realty Laurel · Digital Realty
Silver Spring (2)
- Lincoln Rackhouse Maryland · Lincoln Rackhouse
- Atlantech Online - Silver Spring, MD · Atlantech Online, Inc.
Beltsville (1)
- AiNET · AiNET Corporation
Elkridge (1)
- Cogent Elkridge · Cogent Communications, Inc.
Glen Burnie (1)
- CyberNAP Glen Burnie · AiNET
Linthicum Heights (1)
- TierPoint Baltimore BWI · TierPoint, LLC
Rockville (1)
- Atlantech Online - Rockville, MD · Atlantech Online, Inc.
Sterling (1)
- Equinix · Equinix
Suitland (1)
- QTS Suitland · QTS
City not recorded (16)
- Datacenter 00178331621
- Johns Hopkins Data Center
- Amazon Web Services · Amazon Web Services
- Amazon Web Services · Amazon Web Services
- Amazon Web Services · Amazon Web Services
- Amazon Web Services · Amazon Web Services
- Amazon Web Services · Amazon Web Services
- Datacenter 1088241982
- Datacenter 1344901569
- Datacenter 1482076328
- Datacenter 1510517637
- Datacenter 251716311
- Datacenter 258520532
- Expedient Tidepoint · Expedient
- Lumen Baltimore · Lumen Technologies
- Menlo Digital MD-DC1
Internet exchange and peering facilities in Maryland
18 peering and colocation facilities in Maryland are listed in PeeringDB. Baltimore has the most (6). The best-connected facility hosts 7 networks; the median facility in the state hosts 2 networks.
Baltimore (6)
- TierPoint Baltimore · 7 networks
- Crown Castle Baltimore (111 Market, 700 E Pratt) · 4 networks
- Zayo Baltimore - 111 Market Pl · 4 networks
- AiNET MD-300L · 3 networks
- Lumen Baltimore · 2 networks
- Expedient Baltimore - Owings Mills · 1 networks
Silver Spring (4)
- Databridge Sites Silver Spring · 6 networks
- Atlantech Online - Silver Spring, MD · 1 networks
- Agile Silver Spring · 0 networks
- Lincoln Rackhouse Silver Spring · 0 networks
Beltsville (2)
- AINET - Beltsville · 5 networks
- AiNET WDC8 · 2 networks
Linthicum Heights (2)
- TierPoint Baltimore – BWI · 2 networks
- TunBroker Baltimore · 0 networks
Elkridge (1)
- Cogent Elkridge · 0 networks
Glen Burnie (1)
- AiNET MD-790R · 1 networks
Laurel (1)
- AiNET WDC11 · 3 networks
Rockville (1)
- Atlantech Online - Rockville, MD · 2 networks
Maryland datacenter site selection FAQ
How many datacenter sites are in Maryland?
GridCensus catalogs 1,031 scored datacenter candidate sites in Maryland, with an average DC Readiness score of 52.9/100. That is the 42nd-largest inventory of the 50 states, DC and Puerto Rico.
How many operating datacenters are in Maryland?
31 operating datacenter facilities in Maryland are on record, the 24th-most of any state. Baltimore has the most (4). Amazon Web Services operates the most facilities in the state (5).
What is the average interconnection-queue wait in Maryland?
Candidate sites in Maryland average a 5.2-year interconnection-queue wait, with an average queue depth of 15 projects. The national average across all scored sites is 4.2-year, and Maryland has the 47th-shortest average wait of the 50 states, DC and Puerto Rico.
Which county in Maryland has the most datacenter sites?
Baltimore County has the most scored candidate sites in Maryland (164), followed by Allegany County (81) and Garrett County (76). Among counties with at least 10 sites, Howard County has the highest average DC Readiness (61.2/100).
What kind of datacenter sites are most common in Maryland?
Substation-Adjacent sites are the most common category in Maryland (314 sites, 30% of the inventory), and most sites fall within the PJM grid region.
How many internet exchange facilities are in Maryland?
18 peering and colocation facilities listed in PeeringDB are in Maryland. Baltimore has the most (6). The best-connected one hosts 7 networks.
Looking for a specific record? The directory lists every scored datacenter site in Maryland, A to Z.
More Maryland infrastructure
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 November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Datacenter candidate sites in Maryland”, https://gridcensus.com/datacenter-sites/maryland (data as of November 12, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for Maryland is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.