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Ames utility lays out 5‑year plan to replace aging units, boost green energy and protect reliability
Summary
Ames municipal electric staff told the City Council the utility hit a new 38 MW peak in 2023 and must balance reliability, affordability and climate goals. They proposed new thermal capacity, $50M for renewables ownership, transmission upgrades, and steps to avoid MISO capacity shortfalls while retiring refuse‑derived fuel operations.
Ames electric utility leaders presented a long‑range plan to the City Council focused on meeting growing demand, maintaining reliability and increasing green energy supply.
The presentation — led by utility managers Don and Curtis — said the utility reached a 38‑megawatt peak in 2023 and now must plan for potentially 160 MW peak demand and about 700 GWh annual usage over a 10‑year horizon. Staff identified four big drivers: load growth, Midcontinent Independent System Operator (MISO) capacity rules, aging generation assets, and the city's climate action goals.
Why it matters: utility staff said the city needs dispatchable generation that can meet MISO capacity requirements and fast‑start rules while expanding green energy in ways that do not jeopardize the system's n‑2…
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