Mystic Generating Station
BrownfieldCharlestown, Middlesex, Massachusetts · Constellation Mystic Power LLC
Mystic Generating Station is a natural gas plant in Charlestown, Middlesex, Massachusetts, retired 2024-06-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 2,844 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.
Former use & capacity
Grid hookup & remediation
Nearby datacenter candidate sites
Scored candidate sites near Mystic Generating Station, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| ANP BELLINGHAM ENERGY PROJECT | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 3.5 yrs | 72.9 |
| KINGSTON STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 72.2 |
| TEWKSBURY NO. 22A | Substation-Adjacent | MA | Middlesex County | 345 kV | 600 MW | 3.5 yrs | 71.3 |
| K STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 71.1 |
| WALTHAM | Substation-Adjacent | MA | Middlesex County | 230 kV | 300 MW | 3.5 yrs | 70.9 |
| SCOBIE POND 345KV | Substation-Adjacent | NH | Rockingham County | 345 kV | 600 MW | 3.5 yrs | 70.8 |
| NORTH CAMBRIDGE | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 70.6 |
| TEWKSBURY SUBSTATION | Substation-Adjacent | MA | Middlesex County | 230 kV | 300 MW | 3.5 yrs | 70.5 |
Nearby internet exchanges
- Markley Group One Summer Street BostonBoston, MA · 80 networks
- CoreSite - Boston (BO1)Somerville, MA · 38 networks
- Lumen BostonCambridge, MA · 19 networks
- Evocative BOS1Somerville, MA · 9 networks
See all datacenter sites in Massachusetts →
Dataset updated . Screening estimates derived from public data sources.
Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Mystic Generating Station, Charlestown, Middlesex, Massachusetts. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.