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DataCentersExposed
Mapped (unverified)

Johns Hopkins Data Center

Baltimore County, MD

Source: OpenStreetMap

Johns Hopkins Data Center is a mapped data center in Baltimore County, MD. DataCentersExposed has documented a 3,880 sq ft footprint at this site.

Reporting by · Updated Jun 14, 2026

Real parent
Operator
Footprint
3,880 sq ft
Utility
Baltimore Gas & Electric Co
Grid
PJM
Attribution & capacity confidence:mediumprimary source

Overview

source: link

data center

Grid & water — why here

source: HIFLD · EPA
Nearest substation
0.2 mi
Unknown172845
Transmission line
0.6 mi
115 kV line
Municipal water
Served
City Of Baltimore

The closest existing grid infrastructure and the municipal water system this location sits in — the same constraints the buildout model screens on (it won't site a campus more than ~2 km from a substation or ~5 km from municipal water). Distances are straight-line to public HIFLD/EPA features, not a metered connection.

In the news

source: GDELT

Tax breaks & subsidies

source: Good Jobs First / GASB 77

No per-deal tax break is linked to this site yet. No state discloses the recipient of a data-center abatement at the facility level, so per-site deals are rare in the public record. If you have a development agreement or board resolution for this site, send it to us.

Water use

No public record of this facility's water use. We check state withdrawal reporting for self-supplied sites; municipally supplied sites only become visible through a public-records request to the local water utility — a per-facility request tool is coming. If you have a utility document for this site, send it to us.

EPA permits & violations

source: EPA ECHO

No reported violations as of last sync.

What this site costs the grid

source: PJM RPM auction reports
BGE (Maryland) · 2027/28 auction
$333 /MW-day
Peaked at $127/MW-day in 2022/23 2.53× the rest of PJM

PJM's capacity auction sets a $/MW-day price that utilities pass on to every household and business in the zone. This site sits in PJM's BGE pricing zone, where soaring data-center demand is a documented driver. See the full zone-by-zone breakdown →

Separately, a typical home in this zone pays an estimated $4 to $10/mo more on the capacity portion of its bill that PJM's market monitor attributes to data-center demand. See your address's full impact →

Air quality near this site

source: AirNow
54
PM2.5
Moderate
43
O3
Good
2
PM10
Good

Air Quality Index from the nearest AirNow reporting area (Metro Baltimore), as of 2026-06-10. Regional context — not this facility's own emissions.

Who lives nearby

source: Census ACS 2023
Median household income
$48.7K
People of color
60%
Below poverty
42%
Tract population
1,818

Demographics of the census tract this facility sits in (American Community Survey 5-year estimates). Environmental-justice context for who bears the local impacts.

Nearest school

source: HIFLD / NCES

The nearest public school, John Ruhrah Elementary/Middle in Baltimore, is 0.7 mi from this site (930 students). 6 public schools sit within a mile of the site.

Schools are sensitive receptors for the noise, backup-generator exhaust, and traffic a large data center brings. Straight-line distance to the nearest public school (HIFLD/NCES, US public schools only).

Hearings timeline

No public-hearing records linked to this site yet. We surface planning-commission and board-of-supervisors dates when a record names a facility. If you know of a hearing on this site, tell us.

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