UNION STREET
Substation-AdjacentNorfolk County, Massachusetts · ISO-NE
At a glance
UNION STREET is a substation-adjacent datacenter candidate site in Norfolk County, Massachusetts, scoring 58.6/100 DC Readiness — 41st of 73 scored sites in the county. Its nearest substation is UNION STREET (0 mi, 115 kV). It sits in the ISO-NE grid region and the TOWN OF BRAINTREE - (MA) service territory, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Site location
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How does UNION STREET compare with other sites in Norfolk County?
UNION STREET ranks 41st of 73 scored candidate sites in Norfolk County. Its 58.6/100 is roughly in line with the county average of 58.5. It is roughly in line with the Massachusetts average of 54.2 and about 10% above the national average of 53.2.
Against the Massachusetts average, its strongest sub-score is power availability (56 vs 35) and its weakest is speed to power (47 vs 47). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is UNION STREET to power, fiber and other datacenters?
The nearest mapped substation, UNION STREET, is about 0 miles away and operates at 115 kV. For connectivity, the nearest internet exchange facility is Crown Castle Providence (235 Promenade) at 16 miles. 11 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Crown Castle Providence (235 Promenade), 16 miles away.
What are the flood, water and hazard risks at UNION STREET?
At the county level, FEMA's National Risk Index rates Norfolk County "Relatively Low".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Norfolk County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| HOLBROOK | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 66.7 |
| AUBURN STREET | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 66.5 |
| STOUGHTON | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 66.2 |
| WEST WALPOLE | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 66.1 |
| WEST MEDWAY | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.7 |
| UNKNOWN132928 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.7 |
| BERRY STREET | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.6 |
| UNKNOWN133458 | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 64.6 |
UNION STREET: common questions
What is the DC Readiness score of UNION STREET?
UNION STREET scores 58.6/100 on the GridCensus DC Readiness scale, rated good. It ranks 41st of 73 scored sites in Norfolk County. The Norfolk County average is 58.5 and the Massachusetts average is 54.2.
What is the nearest substation to UNION STREET?
The nearest mapped substation is UNION STREET, about 0 miles away, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves UNION STREET?
TOWN OF BRAINTREE - (MA) (municipal) holds the retail service territory that contains the site.
What grid region is UNION STREET in?
UNION STREET is in the ISO-NE region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is UNION STREET from an internet exchange?
The nearest internet exchange facility is Crown Castle Providence (235 Promenade), about 16 miles away; 11 fiber providers report service at the location.
Related pages
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 October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “UNION STREET, Norfolk County, MA”, https://gridcensus.com/datacenter-sites/massachusetts/norfolk-county/union-street-56bcca03 (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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