Last updated: July 26, 2026
How Much Power Does a Data Center Need?
Data center power demand ranges from about 0.5–5 MW for edge sites to 100–1,000+ MW for hyperscale campuses. Most large modern buildings draw 30–100 MW, and AI-driven campuses are now scaling toward 1,000 MW (1 gigawatt). The real constraint is rarely land — it’s deliverable grid capacity near a substation.
⚡ TL;DR — Power by Facility Size
- • Edge / small: 0.5–5 MW
- • Enterprise / colocation: 5–30 MW
- • Large facility: 30–100 MW
- • Hyperscale campus: 100–1,000+ MW
- • Bottleneck: available grid capacity + a utility willing to serve, not acreage
What Drives Power Demand
- Rack density: traditional racks draw 5–10 kW; AI/GPU racks 40–130+ kW
- Facility count: hyperscale campuses run many buildings, multiplying total load
- Cooling load: higher density needs more cooling power (reflected in PUE, typically ~1.1–1.5)
- Redundancy: N+1 / 2N designs size electrical infrastructure above the IT load
Why “Power-Ready” Land Matters
At these scales, the interconnection queue — not construction — is usually the long pole. Parcels near existing transmission and substation capacity, with a cooperative utility, can shave years off a project. That is what separates power-ready industrial sites and land near substations from land that is merely for sale.
Figures are typical industry ranges and vary by design, region, and utility. Not engineering or financial advice.
Frequently Asked Questions
How much power does a data center need?
It depends on scale. Edge and small sites run about 0.5–5 MW; enterprise and colocation facilities 5–30 MW; large facilities 30–100 MW; and hyperscale campuses 100–1,000+ MW. A single large modern building commonly draws 30–100 MW, while AI-focused campuses are pushing toward 1,000 MW (1 gigawatt) and beyond.
What is a 1,000 MW (1 GW) data center?
A 1,000 MW campus is a gigawatt-scale development — the size now being announced for large AI training clusters. It is not a single building but a multi-building campus, and it needs land adjacent to major transmission and substation capacity, since utility interconnection at that scale can take years.
How much power does an AI data center use compared to a traditional one?
Far more per square foot. Traditional server racks draw roughly 5–10 kW each; AI/GPU racks draw 40–130+ kW each. That density is why AI facilities are measured in hundreds of megawatts and why proximity to available grid capacity now matters more than land price.
Why is power the main constraint on data center sites?
Because land is easier to find than megawatts. Available, deliverable grid capacity near a substation — and a utility willing to serve on a workable timeline — is the scarce input. That is exactly what makes a parcel 'power-ready' rather than just available.
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