Greenfield (BRUNNER ISLAND - MARTINS CREEK)
GreenfieldDauphin County, Pennsylvania · PJM
At a glance
Greenfield (BRUNNER ISLAND - MARTINS CREEK) is a greenfield datacenter candidate site in Dauphin County, Pennsylvania, scoring 53.5/100 DC Readiness — 39th of 107 scored sites in the county. Its nearest substation is BRUNNER ISLAND. It sits in the PJM grid region and the PPL ELECTRIC UTILITIES CORP service territory, where interconnection has averaged 3.6 years from request to operation. GridCensus catalogs 300 MW of candidate capacity here.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Keystone Opportunity Zone/KOEZ sales and property tax exemptions in designated areas.
Site location
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How does Greenfield (BRUNNER ISLAND - MARTINS CREEK) compare with other sites in Dauphin County?
Greenfield (BRUNNER ISLAND - MARTINS CREEK) ranks 39th of 107 scored candidate sites in Dauphin County. Its 53.5/100 is roughly in line with the county average of 52.1. It is roughly in line with the Pennsylvania average of 51.8 and roughly in line with the national average of 53.2.
Against the Pennsylvania average, its strongest sub-score is power availability (50 vs 34) and its weakest is speed to power (37 vs 37). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (BRUNNER ISLAND - MARTINS CREEK) to power, fiber and other datacenters?
The nearest mapped substation, BRUNNER ISLAND, is the closest grid connection point on record and operates at 230 kV. The nearest located transmission bottleneck is JACK ME-TMI 1051 B 230 KV (PJM), 10 miles away. For connectivity, the nearest internet exchange facility is Omega PA1 at 48.7 miles. 10 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Omega PA1, 48.7 miles away.
What are the flood, water and hazard risks at Greenfield (BRUNNER ISLAND - MARTINS CREEK)?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk). At the county level, FEMA's National Risk Index rates Dauphin County "Relatively Moderate".
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 Dauphin County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| HUMMELSTOWN | Substation-Adjacent | 230 kV | 300 MW | 3.6 yrs | 60.1 |
| UNKNOWN123405 | Substation-Adjacent | 230 kV | 300 MW | 3.6 yrs | 60.1 |
| UNKNOWN157826 | Substation-Adjacent | 230 kV | 300 MW | 3.6 yrs | 60.0 |
| UNKNOWN123851 | Substation-Adjacent | 230 kV | 300 MW | 3.6 yrs | 59.9 |
| UNKNOWN123850 | Substation-Adjacent | 230 kV | 300 MW | 3.6 yrs | 59.9 |
| OZ Dauphin | Greenfield | — | — | 3.6 yrs | 59.9 |
| EC Dauphin Coal Area | Greenfield | — | — | 3.6 yrs | 59.4 |
| EC Dauphin Coal Area | Greenfield | — | — | 3.6 yrs | 59.3 |
Greenfield (BRUNNER ISLAND - MARTINS CREEK): common questions
What is the DC Readiness score of Greenfield (BRUNNER ISLAND - MARTINS CREEK)?
Greenfield (BRUNNER ISLAND - MARTINS CREEK) scores 53.5/100 on the GridCensus DC Readiness scale, rated fair. It ranks 39th of 107 scored sites in Dauphin County. The Dauphin County average is 52.1 and the Pennsylvania average is 51.8.
What is the nearest substation to Greenfield (BRUNNER ISLAND - MARTINS CREEK)?
The nearest mapped substation is BRUNNER ISLAND, at 230 kV. GridCensus catalogs 300 MW of candidate capacity for the site.
Which electric utility serves Greenfield (BRUNNER ISLAND - MARTINS CREEK)?
PPL ELECTRIC UTILITIES CORP (investor owned) holds the retail service territory that contains the site; its holding company is PPL CORPORATION.
What grid region is Greenfield (BRUNNER ISLAND - MARTINS CREEK) in?
Greenfield (BRUNNER ISLAND - MARTINS CREEK) is in the PJM region. Projects interconnecting there have averaged a 3.6-year wait from queue request to operation.
Is Greenfield (BRUNNER ISLAND - MARTINS CREEK) in a flood zone?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk).
How far is Greenfield (BRUNNER ISLAND - MARTINS CREEK) from an internet exchange?
The nearest internet exchange facility is Omega PA1, about 48.7 miles away; 10 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, “Greenfield (BRUNNER ISLAND - MARTINS CREEK), Dauphin County, PA”, https://gridcensus.com/datacenter-sites/pennsylvania/dauphin-county/greenfield-brunner-island-martins-creek-154fa75d (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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