Data centers and new power in Hampden County, MA
295 MW of new power is waiting to connect to the grid in Hampden County, MA — 2 active requests. Typical wait: 4.0 years. 12 projects are built, 54 withdrawn. Data as of 14 October 2026.
Is one near your house?
We have not mapped a large AI data center inside Hampden County itself — but we track the biggest ones nationally, and requests to connect new power here are on the public record.
What is happening with electricity in Hampden County
Every new power plant, battery or big customer has to join a waiting list before it can plug into the grid. This is what that list looks like in Hampden County right now.
Where every request ever filed here ended up
Most requests in the US are withdrawn — a developer tests a site and moves on. That is normal, not a warning sign for Hampden County.
What kind of power is asking to connect
By capacity requested. Data as of 14 October 2026.
All the numbers
68 requests ever filed
Source: interconnection queues published by ISONE. Parsed and normalised by Watt Street. Data as of 14 October 2026. A queued project is a request, not a commitment.
Outcome of every request filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 12 | 284 MW | 17.6% |
| Still waiting | 2 | 295 MW | 2.9% |
| Withdrawn | 54 | 6.5 GW | 79.4% |
| Paused | 0 | — | 0.0% |
Waiting to connect, by type of power
| Type | Projects | Capacity requested |
|---|---|---|
| Batteries | 2 | 295 MW |
Key dates for projects here
1 dated · next closes 2026-11-19 (ISONE)
| Queue | What closes | Closes | Standing |
|---|---|---|---|
| ISONE | ISO-NE cluster request window Cluster study under OATT Schedules 22, 23 and 25. | 2026-11-19 | disputed source |
| FERC | FERC large-load show cause — stakeholder comments on RTO responses Comments on the six RTO/ISO responses to the FPA section 206 show-cause orders of 18 June 2026 (PJM EL26-67, SPP EL26-68, NYISO EL26-69, MISO EL26-70… | No date published yet | unconfirmed source |
| FERC | FERC RM26-4 — generic large-load rulemaking Still at ANOPR stage. | No date published yet | confirmed source |
| FERC | Georgia PSC - Georgia Power must file large-load contracts 30 days before execution A standing obligation rather than a dated one: large-load contracts must be filed with the commission at least 30 days before they are executed. | No date published yet | confirmed source |
A date marked confirmed was checked by a person against the authority's own tariff, order or form page. Anything else is listed so you know it exists, with a link so you can check it yourself. Full calendar.
The biggest projects on file
top 15 by size
| Project | Type | Capacity | Status | Filed | Queue |
|---|---|---|---|---|---|
| Combined Cycle | Natural gas | 837 MW | withdrawn | 2014-12 | ISONE |
| CC Administrative Increase | Natural gas | 478 MW | withdrawn | 2011-08 | ISONE |
| Combined cycle (alt to Q442/472) | Natural gas | 431 MW | withdrawn | 2015-03 | ISONE |
| Regional Network Service Request | Nuclear | 395 MW | withdrawn | 2021-06 | ISONE |
| Combined Cycle | Natural gas | 388 MW | withdrawn | 2014-02 | ISONE |
| Pioneer Valley Energy Center | Natural gas | 353 MW | withdrawn | 2007-11 | ISONE |
| Battery Storage | Batteries | 301 MW | withdrawn | 2023-03 | ISONE |
| Battery Storage | Batteries | 300 MW | withdrawn | 2022-11 | ISONE |
| Combined Cycle | Natural gas | 280 MW | withdrawn | 2006-10 | ISONE |
| Battery Storage | Batteries | 275 MW | withdrawn | 2022-12 | ISONE |
| MASSPOWER CNR Recovery | Natural gas | 256 MW | completed | 2014-05 | ISONE |
| Battery Storage | Batteries | 251 MW | withdrawn | 2024-04 | ISONE |
| Battery Storage | Batteries | 250 MW | active | 2023-03 | ISONE |
| Streamfield | Batteries | 202 MW | withdrawn | 2021-04 | ISONE |
| Battery Storage | Batteries | 202 MW | withdrawn | 2023-12 | ISONE |
How Hampden County compares
#807 in the US · #9 in MA
Hampden County ranks #807 of 1,607 US counties by power waiting to connect, and #9 of 12 in Massachusetts.
| County | Waiting | Capacity queued |
|---|---|---|
| Bristol County | 2 | 1.4 GW |
| Middlesex County | 4 | 1.2 GW |
| Suffolk County | 2 | 550 MW |
| Barnstable County | 1 | 500 MW |
| Norfolk County | 2 | 470 MW |
| Berkshire County | 2 | 426 MW |
| Essex County | 2 | 425 MW |
| Worcester County | 2 | 384 MW |
Common questions about power in Hampden County
How long does it take to get power for a data center in Hampden County, MA?
The median wait for a project still in the interconnection queue in Hampden County is 4.0 years. Across the US, most large loads are quoted three to seven years depending on the market and whether network upgrades are needed. 12 projects in Hampden County have reached energization and 54 were withdrawn, so the withdrawal rate here is a better guide to risk than any single quoted timeline.
How much capacity is available in Hampden County, MA?
295 MW is currently requested across 2 active interconnection requests, and 284 MW has actually been built. A queued megawatt is a request, not deliverable capacity — most queued projects are never built. For deliverable offtake capacity at a specific substation you need a utility study, not a queue.
Is Hampden County, MA a good site for a data center?
This page gives you the power half of that answer: what is queued, what has been energized, how long the wait runs, and which large load interconnection requests are already recorded nearby. The other half — the state policy position, moratoriums and large load tariffs — is on our Massachusetts policy page.
Where does the data on this page come from?
The interconnection queue published by the transmission providers serving Hampden County — ISONE — parsed and normalised by Watt Street. Every figure carries the date it was true. Data as of 14 October 2026.
Go deeper on Hampden County
The interactive map plots every one of these applications, and a generated county report puts them in a sourced PDF with the date each figure was true on every page.
Open Hampden County on the map County reports All of Massachusetts