Markley Data Center

Markley Data Center is an operating data center in Middlesex County, Massachusetts, run by the Markley Group. Its reported footprint is 123,665 square feet. The site draws power from the Massachusetts Bay Transportation Authority inside the ISNE grid. Ownership above the Markley Group is not disclosed in available records.

• Nuclear36.1%
• Natural Gas35.5%
• Solar9.5%
• Hydro9.1%
• Biomass5.3%
• Wind3.9%
• Other0.6%

Real-time generation mix for the ISONE grid this site draws from, as of Jun 16, 2026, 4:37 PM. ISO-wide, not this facility's own metering. Source: gridstatus.

• Markley Group CEO buys retired generating plant in Lowell, Massachusetts - Data Center Dynamics

  Data Center Dynamics· Apr 24, 2026
• Markley Group demands $80m in data center court fight with Zayo - Data Center Dynamics

  Data Center Dynamics· Aug 2, 2023

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.

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.

No reported violations as of last sync.

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

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

The nearest public school, Cardinal O'connell Early Learning Center in Lowell, is 780 ft from this site (99 students). 11 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).

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.