The Definitive Guide toAI Data Centers
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Guide › Glossary › Opex

Opex · Operating Expenditure

Ongoing running costs such as power, water, staff and maintenance, expensed as incurred.

Current numbers

~$0.6B/yrEnergy: largest opex category in Epoch AI's May 2026 modeled 1 GW GB200 campusas of 2026-05 · register ↗

Where the guide uses this

16.5
Scenarios for 2030
3.10
Tax Incentives, Fiscal Structuring & Economic Development
E
Glossary, Phase-Gate Timeline & Learning/Community Map
9.6
Object Storage, Data Lakes & the Capacity Tier
C
Decision Tables & Calculators
2.5
Project Finance & Capital Formation (Mechanics)

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