Backer profile · Tech company or data center tenant

Microsoft Corporation

Microsoft is the software and cloud computing company headquartered in Redmond, Washington, publicly traded on Nasdaq, with about 223,000 full-time employees as of June 2026. In September 2024 it signed a 20-year agreement to buy the power from Constellation's restart of the 835-megawatt Three Mile Island Unit 1 reactor in Londonderry Township, Dauphin County, now called the Crane Clean Energy Center. Constellation says Microsoft will use that power to help match the electricity its data centers on the PJM regional grid consume, and there's no data center on the island.

Microsoft spent $115.9 billion on property and equipment in its 2026 fiscal year, up from $64.6 billion the year before, and had committed another $34.6 billion for construction, mostly datacenters, as of June 30, 2026.

Scoreboard

Pennsylvania project on our map

1 approved or built

Tenant or buyer: 1

Approved or built1

In process0

Stopped0

Megawatts named835 MWpublished for 1 of 1

Investment announced$1.6 billionpublished for 1 of 1

Permanent jobs claimed600claimed for 1 of 1

Water, maximum73.2 million gal/daypublished for 1 of 1

Counties1Dauphin

Earliest project2024first public announcement

Local groups opposing1across its projects

Legal filings6appeals, challenges and suits on file

Community impacts3documented on its projects

News stories5in our coverage log

Projects

Project	Status	Role	Size named
Crane Clean Energy Center (Three Mile Island Unit 1 Restart)Londonderry Township, Dauphin CountySuggest a correction	Under Construction	Power buyer	835 MW

Sources

Microsoft Corporation Form 10-K for the fiscal year ended June 30, 2026 U.S. Securities and Exchange Commission (EDGAR) · 2026-07-29
Constellation to Launch Crane Clean Energy Center, Restoring Jobs and Carbon-Free Power to The Grid Constellation Energy · 2024-09-20
Crane Clean Energy Center (Three Mile Island Unit 1 Restart) No Conshy Data Centers · 2026-10-22

Project details, statuses and figures come from each project’s own profile, which lists its sources.

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