A 2-gigawatt data centre in Pennsylvania plans to run on a dedicated onsite power source instead of the grid
Aligned Data Centers has broken ground in Shippingport on a campus it says will use a dedicated onsite power source, in a town of 154 people where a 2.49-gigawatt coal plant closed in 2019.
On 10 September 2026, Aligned Data Centers broke ground on Project Phoenix, a 2-gigawatt data centre campus in Shippingport, Pennsylvania. A data centre is a building full of computers, and its size is counted in the electricity it can draw; a gigawatt is a thousand megawatts. Aligned's release says the campus will use a dedicated onsite power source rather than the local electrical grid, and that it anchors an estimated $10 billion in regional economic investment. Data Center Dynamics reports the site will hold three facilities in the Shippingport Industrial Park, which is owned by the Frontier Group of Companies.
Why it matters
This site has made power before. The Bruce Mansfield coal plant there was a 2.49-gigawatt plant that launched in 1976 and shut in 2019, according to DCD. The new campus is sized at 2 gigawatts, about 80 percent of what that coal plant could generate, which is 2 divided by 2.49, this desk's arithmetic. Salena Zito, writing from the site, puts it as "roughly the output of the coal plant it replaces." The jobs are large for the place too. Aligned estimates 640 full-time operations jobs, and Zito counts Shippingport's population at 154. The estimated permanent jobs are more than four times the number of people who live in the town.
Why a campus on its own onsite power stands out on the PJM grid. Arrows are this desk's reading.
$325.00/MW-day: PJM capacity auction clears at its price cap (our reading: Both point to a grid short of supply)
LOLE 13.20: Study for PA regulator: over 13 shortfall days in a bad case (our reading: Onsite power keeps it off that grid)
2 GW: Aligned breaks ground on a campus on onsite power (our reading: Washington asks who pays when campuses connect)
417-3: House passes bill: data centres pay for new grid infrastructure
It also matters because of the grid around it. A study for Pennsylvania's utility regulator, dated 14 September, puts the PJM grid's modelled 2030 loss-of-load expectation at 0.59 in its reference scenario, nearly six times worse than PJM's planning criterion. Aligned's plan is to stay off that grid: its release says the campus will use a dedicated onsite power source rather than the local grid and, once completed, is expected to deliver excess power capacity back to it.
What would change it, and when
Everything depends on the onsite power being built. Aligned's release describes the neighbouring former coal plant as being redeveloped into a natural gas energy campus. DCD reports Frontier planned a 2.7-gigawatt gas plant at the site, served by EQT and National Fuel Gas, and said the site will be able to offer up to 3.6 gigawatts of behind-the-meter capacity, meaning power delivered directly without passing through the grid. None of these documents gives a date for when the gas plant or the first data hall will run.
What we do not know
The tenant is not named. No date is given for first capacity. The $10 billion is the company's estimate of regional economic investment, not a stated figure for its own spending. The sources also describe the site differently: Aligned's release says the campus sits adjacent to the former power station, while Zito writes that Project Phoenix "will rise on the Mansfield footprint". We report both.
What this changes for you
If you pay a power bill in the PJM region, the question for each new data centre is whether it adds to the grid's load or brings its own supply. This one says it brings its own. Watch for the gas plant's construction: until it runs, the 2 gigawatts is a plan, and so is the promise to send power back.
Sources
Everything above is written from these. Each line says what that document proves.
aligneddc.com: Aligned's own release, 10 September 2026: 2 GW, estimated $10B regional investment, estimated 3,000 construction and 640 operations jobs, dedicated onsite power rather than the grid, excess capacity expected back to the grid, adjacent to a former coal plant being redeveloped for gas.
datacenterdynamics.com: DCD's own report, 17 September 2026: three facilities, site owned by Frontier Group, Bruce Mansfield was 2.49GW from 1976 to 2019, Frontier's 2.7GW gas plan and up to 3.6GW behind-the-meter.
salenazito.substack.com: Salena Zito's own reporting from the site, 16 September 2026: rises on the Mansfield footprint, roughly the output of the coal plant it replaces, Shippingport population 154.
puc.pa.gov: Study for the Pennsylvania PUC, 14 September 2026: modelled 2030 LOLE of 0.59 in the reference scenario, nearly six times worse than the PJM planning criterion.
Two suppliers detailed their own share of a four-supplier deal a trade publication puts above 1.7 gigawatts. The part that matters is that none of it is new construction.
The Ratepayer Protection Act would make data centres, not ordinary households, cover the cost of new grid infrastructure built to serve them. It cleared committee 52 to 0 and the House almost unanimously.
The 8 billion dollar headline is a ceiling, not a commitment. What Amazon actually signed is 2.4 billion dollars of deliveries and about 340 million dollars of Generac stock at a fixed price, most of which only vests if Amazon keeps buying.
Strata, the whole AI stack, explained simply. Every number carries a source and a confidence label.