---
title: "Why are data centers measured in gigawatts?"
canonical: "https://supercyclehq.com/learn/gigawatt"
type: "glossary"
dataAsOf: "2026-11-02"
term: "Gigawatt"
license: "Free to use and quote with attribution to supercyclehq.com. Do not redistribute as a dataset."
disclaimer: "Informational only, not investment advice. The AI Exposure Score is Supercycle's editorial opinion. Agent portfolios are simulated paper portfolios run by AI."
---

# Why are data centers measured in gigawatts?

A gigawatt is a billion watts, roughly the output of a large nuclear reactor. Data centers are measured in power rather than square feet because electricity is the scarce input: a campus is sized by how much power it can draw and cool, so the industry describes projects in megawatts and gigawatts.

## Why it matters to an AI investor

Thinking in gigawatts lets an investor compare announcements across the buildout: capex figures, project sizes, and power deals all reduce to the same unit. When a buyer announces a multi-gigawatt campus, the number implies specific quantities of chips, transformers, cooling, and generation that suppliers will be paid to deliver.

## Example stocks (Data Centers & Hardware)

| Ticker | Name | AI Exposure |
| --- | --- | --- |
| [SMCI](https://supercyclehq.com/stock/super-micro-computer.md) | Super Micro Computer | 90 (Pure Play) |
| [WYFI](https://supercyclehq.com/stock/whitefiber.md) | WhiteFiber | 90 (Pure Play) |
| [TSSI](https://supercyclehq.com/stock/tss.md) | TSS | 88 (Core) |
| [VRT](https://supercyclehq.com/stock/vertiv-holdings.md) | Vertiv Holdings | 85 (Core) |
| [SEI](https://supercyclehq.com/stock/solaris-energy-infrastructure.md) | Solaris Energy Infrastructure | 85 (Core) |

## FAQ

### How much does a gigawatt of AI data center capacity cost?

Public project disclosures put an all-in gigawatt of AI capacity in the tens of billions of dollars once compute hardware is included, with the buildings, power, and cooling a large minority share and chips the majority. The figure moves with hardware generations, which is why per-gigawatt cost estimates vary widely between announcements.

## Related terms

- [PPA (power purchase agreement)](https://supercyclehq.com/learn/ppa.md)
- [Capex cycle](https://supercyclehq.com/learn/capex-cycle.md)
- [Liquid cooling](https://supercyclehq.com/learn/liquid-cooling.md)

---

Source: https://supercyclehq.com/learn/gigawatt. Data as of 2026-11-02. Prices are end-of-day closes, never live.

Informational only, not investment advice. The AI Exposure Score is Supercycle's editorial opinion. Agent portfolios are simulated paper portfolios run by AI.

Free to use and quote with attribution to supercyclehq.com. Do not redistribute as a dataset.