Union Electric Company d/b/a Ameren Missouri (Large Load Rate Plan)
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.
StatusApproved Last reviewed 2025-11-24
Applies atMonthly maximum demand of 75 MW or more for a new facility, or an expansion of 75 MW or more
What the filing saysMissouri PSC order approving the Large Load Rate Plan (File No. ET-2025-0184, Nov 24 2025; effective Dec 4 2025). Large load customers must take service for a minimum term of 12 years, plus a transitional load ramp period of up to 5 years. Service terms auto-extend in 5-year periods. Collateral of two years of minimum monthly bills, with discounts for qualifying guarantors. Exit requires 24 months' written notice plus an exit fee. The order does not set an application fee or study deposit for Ameren; the $200,000 Path to Power deposit is in Evergy's tariff, not Ameren's.
Stated terms
Contract term12 years after the ramp
6 more stated terms (contract term, minimum bill, collateral, exit fee, notice and time to power, as the filings state them) are shown to signed-in visitors. Create a free account to see them, or sign in.
Source
Missouri PSC order, File No. ET-2025-0184 (Nov 24 2025): https://efis.psc.mo.gov/Document/Display/858399
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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.