Google Montgomery County / Clarksville

Google · Clarksville, Tennessee

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The resource footprint

Modelled average

In one day, this campus consumes about

4.7450-metre swimming pools

Filled with the volume of water consumed by the campus and its electricity supply.

The actual estimate3,129,045 US gallons consumed

50-metre pools · 2 metres deep

Each diagram = 1 pool. Partial shading shows the remainder.

At the campus1,163,562 galMaking its electricity1,965,484 gal

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.

Total water use1,142M gal/yr

Evaporated on site425M gal

Making the power717M gal

Household comparison14,276homes, at 80,000 gal/year

Pressure on local water: Not assessed — a regional measure of demand compared with available water
Where the water comes from: Supply type not yet verified
Cooling: Water-based cooling; equipment details not verified
Basis: Fitted to a published figure of 425 million gallons a year (2025)
Operator table: Withdrew 500 million gallons, discharged 74.8, consumed 425
Claimed vs observed: Google 2026 Environmental Report, FY2025: consumed 424.7 million gallons. This is campus-wide water consumption, not water attributable solely to AI.

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.

Nitrogen oxides192t/yr

Sulphur dioxide319t/yr

Fine particulates30.4t PM2.5

Health (EPA)$31.5M/yr

Health range: $11.1–31.5 million a year. Lower bound is EASIUR national mid-range; upper is EPA benefit-per-ton at a ~$12M VSL.
Statistical deaths: 2.63 a year at that VSL — a national-average conversion from tons, not a local concentration study.
Equals: 239,617 cars of NOx
Where it burns: TVA — Tennessee Valley
Generation mix: Nuclear 41 · Gas 27 · Coal 13 · Hydro 10
Diesel backup: Generator inventory and operating hours have not been retrieved; no diesel testing term is included.
CO₂e: 460 kt/yr — climate, not air quality

The project, approvals and community concerns

Who asked for it: Google — self-build
Who approved it: Google confirms the Montgomery County campus opened in 2019. TVA supplies the regional grid; individual permits have not been retrieved.
What it serves: Google services; the share devoted to AI is not disclosed
IT capacity: 239 MW current capacity / 239 MW full-build scenario
Capacity basis: Google reported 424.7 million gallons consumed here in 2025. IT capacity is a model assumption: four public building capacities total 260 MW, treated as facility capacity and divided by an assumed 1.09 PUE to give approximately 239 MW IT. No additional expansion is quantified in the full-build scenario.

Google reported 424.7 million gallons consumed here in 2025. IT capacity is a model assumption: four public building capacities total 260 MW, treated as facility capacity and divided by an assumed 1.09 PUE to give approximately 239 MW IT. No additional expansion is quantified in the full-build scenario.

Keep this guide handy

36.6283°, -87.2601°

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Quote or share these estimates

Gigawatt Ledger (2026). Google Montgomery County / Clarksville: water and air. https://gigawatt-ledger.pages.dev/site/clarksville/. 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.

Source documents

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.