Gigawatt Ledger · one-page briefing
Campus profile Under construction
Prometheus
Meta Platforms · New Albany, Ohio
The resource footprint
Modelled averageIn one day, this campus consumes about
3.950-metre swimming pools
Filled with the volume of water consumed by the campus and its electricity supply.
The actual estimate2,578,689 US gallons consumed
Power-plant water may come from a different watershed. This is a volume comparison, not a claim that households lose this water.
At current operating capacity · Annual model spread evenly over time, not a live meter. Site estimates may differ by roughly ±40%.
Comparison sizes & sources
One pool = 50 × 25 × 2 metres = 2.5 million litres (about 660,430 US gallons). Pool depths vary; this is a defined comparison size.
One home-year = 10,791 kWh, the EIA’s 2022 average US residential electricity purchases. This excludes electricity generated at home and is a fixed US benchmark for all sites.
One car-year = 4.6 tonnes CO₂, the EPA’s typical passenger vehicle tailpipe estimate. The campus model is in CO₂e; the comparison expresses approximate climate scale, not equal mixtures of pollutants.
Monthly values are annual totals ÷ 12; daily values are annual totals ÷ 365. Actual demand varies. Comparisons cover the whole campus, including non-AI uses.
Water: see the numbers and sources
This is water used up, mainly through evaporation. Power-generation water may be used in a different watershed.
- Pressure on local water
- Low — a regional measure of demand compared with available water
- Where the water comes from
- Municipal potable supply
- Cooling
- Closed-loop liquid with air economization
- Basis
- Modelled from cooling design — WUE 0.25 L/kWh
Air: see the numbers and sources
The totals include nitrogen oxides, sulphur dioxide and fine particles. They cover both this site and the power plants supplying it.
- Health range
- $25.2–71.5 million a year. Lower bound is EASIUR national mid-range; upper is EPA benefit-per-ton at a ~$12M VSL.
- Statistical deaths
- 5.96 a year at that VSL — a national-average conversion from tons, not a local concentration study.
- Equals
- 783,226 cars of NOx
- Where it burns
- PJM RFC — Ohio / Penn. + 25% turbines on the site itself
- Generation mix
- Gas 48 · Nuclear 27 · Coal 20
- Emitted at the fence line
- 23% of this site's criteria pollution
- Diesel backup
- Williams 'Socrates' off-grid gas: 238.6 tpy NOx per plant, permitted to Will-Power OH, not to Meta. Original diesel black-start units were partly replaced with batteries.
- Air permit
- 239 t/yr NOx potential-to-emit
- CO₂e
- 1,004 kt/yr — climate, not air quality
The project, approvals and community concerns
- Who asked for it
- Meta — self-build
- Who approved it
- City of New Albany / Licking County JEDZ agreements; AEP Ohio data center tariff approved by PUCO in 2025 after a contested case
- What it serves
- Meta's first multi-gigawatt AI training cluster
- IT capacity
- 300 MW current capacity / 1,000 MW full-build scenario
Meta trucked in on-site gas generation to beat the interconnection queue. The PUCO tariff fight here set the national precedent that large loads must post collateral for the capacity they reserve.
Keep this guide handy
40.0812°, -82.8088°
Quote or share these estimates
Gigawatt Ledger (2026). Prometheus: water and air. https://gigawatt-ledger.pages.dev/site/prometheus/. Modelled from disclosed capacity; site-level error ±40%.
Include the estimate’s date, whether it describes current or proposed capacity, and its uncertainty. Get an embeddable card.
Gigawatt Ledger · September 2026. Water and air figures are estimated from public records and disclosed capacity. How we calculate them · Use this in your community.