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Rocky Mountain Power to triple Mountain Green substation capacity; work to run through 2026
Summary
Rocky Mountain Power told the Morgan County Commission it will replace the Mountain Green substation with a larger 30 MVA facility and add two distribution circuits to improve reliability; construction is expected to complete around May 2026.
Rocky Mountain Power representatives told the Morgan County Commission on March 18 that the utility will replace the aging Mountain Green substation and increase its transformer from 10 MVA to 30 MVA to meet growing summer peak demand.
Logan Taggart, Rocky Mountain Power regional business manager, presented project details: the upgrade will be built on the existing substation property and add two dedicated distribution circuits (north and south) with individual breakers, reduced single‑point failures and improved reliability for communities served from Mountain Green. The new switchgear and breakers will be housed in…
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