Data Center Registry

FirstLight Portsmouth, NH Data Center

Portsmouth, Rockingham County, New Hampshire

OperatingNo reception on recordRecord updated October 26, 2026

FirstLight Portsmouth, NH Data Center is an operating data center in Portsmouth, New Hampshire (Rockingham County), operated by FirstLight.

Every line on this page traces to a public source listed at the bottom. Where a figure was looked for and not found, the row says so. A blank is never a zero.

Facility record

Operating

Operator: FirstLight
Facility type: Data center
Location: 359 Corporate Drive, Portsmouth, Rockingham County, NH
Coordinates: 43.0761, -70.8080
Power capacity: Not established from a public source
Land: Not established from a public source
Investment: Not established from a public source
Announced: Not established from a public source
Utility: Not established from a public source
Power source: Grid
Cooling: Not established from a public source
Water use: Not established from a public source
Jobs: Not established from a public source
Public subsidy: Not established from a public source
Community reception: No reception on record
Source confidence: Reported by at least one credible outlet or filing

Opposition and litigation at this site

Nothing on record as of October 26, 2026. No lawsuit, organized opposition, or contested hearing over FirstLight Portsmouth, NH Data Center in Portsmouth, Rockingham County, New Hampshire appears in the sources this registry tracks. That is an absence in our sources rather than a finding that none exists, and local opposition often predates any coverage a national dataset would pick up.

If you live near this site and something is happening that this page does not show, that is worth telling us. Send us the document and it goes in the record with the source attached. For sites where opposition is already established, see every contested site we track.

Power and water

The operator spec sheet lists commercial power with A and B feeds to every rack, a 2N power design, 2 ATS, 3 UPS, independent 200 kW backup generators, and 5-9 kW per rack.

Notes on the record

Confirmed at 359 Corporate Drive, Portsmouth, NH, on FirstLight's own domain (firstlight.net/resources/data-center-portsmouth-nh-specifications/), corroborated by Baxtel (https://baxtel.com/data-center/firstlight-portsmouth). Carrier-neutral operational colocation facility.

What the record does not establish, and the document that would

In every fight on our tracker the decisive fact came out of a public records request. These are the requests for this site.

Power capacity in megawatts
Cooling method and water use
Tax abatements or other public subsidy
Permanent jobs promised
Land area
How the community has received it
Which utility serves it

Which document closes each gap

Power capacity in megawatts: The utility's large load service agreement, the interconnection request in the grid operator's queue, or the electrical site plan in the permit file.
Cooling method and water use: The water service agreement, any groundwater appropriation permit, and the mechanical narrative in the site plan.
Tax abatements or other public subsidy: The abatement, PILOT, or development agreement approved by the county, city, or development authority, and the state's data center sales tax exemption certificate if one was issued.
Permanent jobs promised: The economic development application or incentive agreement, which usually states a job commitment and a clawback.
Land area: The rezoning application, the plat, or the deed recorded with the county.
How the community has received it: Planning commission and governing body minutes, public comment records, and any petition or lawsuit filed in the county.
Which utility serves it: The electric service agreement or the utility's filing with the state public utility commission.

Have one of these documents? Send it to us and we will add it to the record with attribution.

Other sites within 30 miles

Distances are between recorded coordinates, many of which are a city or county centroid, so treat them as approximate. Cumulative load on one utility and one aquifer is the question a planning commission rarely asks.

Liberty Mutual Portsmouth Data Center · Portsmouth · Liberty Mutual1 mi · Operating
University of New Hampshire Data Center (1 Leavitt Lane) · Durham · University of New Hampshire9 mi · Operating
Phillips Exeter Academy Information Technology Data Center · Exeter · Phillips Exeter Academy10 mi · Operating
Sanford Woods Data Center · Sanford · New England Energy25 mi · Proposed · Contested

Tell us about your situation

Living near FirstLight Portsmouth, NH Data Center?

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Questions people ask about this site

Is there opposition to the FirstLight Portsmouth, NH Data Center in Portsmouth?

Has anyone filed a lawsuit over the FirstLight Portsmouth, NH Data Center?

No lawsuit over FirstLight Portsmouth, NH Data Center appears in the record we track as of October 26, 2026. Residents most often reach a lawyer over water supply, well drawdown, noise from cooling plant, property value, or a rezoning approved without the notice the ordinance required. If any of that is happening near this site, it is worth a review whether or not a case has been filed yet.

How much water does FirstLight Portsmouth, NH Data Center use?

No water withdrawal figure for FirstLight Portsmouth, NH Data Center is on record here. Water use is rarely published voluntarily; it usually surfaces through a utility service agreement or a state withdrawal permit, both of which are public records. We leave the number blank rather than estimate one.

Who operates FirstLight Portsmouth, NH Data Center, and how big is it?

FirstLight is the operator on record. No capacity figure is on record for this site.

How to cite this page

SueDataCenters.org Data Center Registry, "FirstLight Portsmouth, NH Data Center," updated October 26, 2026, https://suedatacenters.org/data-centers/firstlight-portsmouth-nh-data-center-nh.

Facility data from Compute Atlas (E. Kubiak), version 1.34.1 (October 4, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/firstlight-portsmouth-nh-data-center-nh, retrieved October 29, 2026.

Corrections with a public source are welcome at the Compute Atlas record or through our contact page. The whole registry is available as CSV and JSON under CC BY 4.0.

Sources for this record

As compiled and cited by Compute Atlas, with our own reporting appended. Archived links are used where the original has moved.

1.FirstLight facility directory · FirstLight · retrieved July 22, 2026
2.OpenStreetMap way/87058670 · OpenStreetMap · retrieved July 22, 2026
3.OpenStreetMap way 87058670 (telecom=data_center, operator=FirstLight, 77 Aviation Avenue, Portsmouth) · OpenStreetMap contributors · retrieved October 26, 2026
4.FirstLight Data Center - Portsmouth, NH spec sheet (v1-18) · FirstLight Fiber · retrieved October 26, 2026

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