Xcel Energy / Public Service Co. of Colorado
Large-load tariff for data centers: what is on file, the terms the filings state, and where each fact comes from. Terms a filing does not state are marked, never guessed.
StatusPending Last reviewed 2026-04-02
Applies at50 MW and above
What the filing saysLarge-load tariff filed (Advice Letter No. 2018-Electric). Requires demonstrated site control and signed interconnection and energy service agreements before data center load counts toward served load. $120,000 deposit, with total upfront cost commonly cited around $600,000 including study fees.
Stated terms
This tariff does not yet have terms we can tabulate. The status text above is what the filings and our source state. See the source below.
Source
Colorado PUC filing, April 2, 2026; RTO Insider and Colorado Sun coverage
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Screening information from public filings, not legal or investment advice. Tariffs change; confirm the current terms with the utility and the commission before relying on them.