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City electric staff propose buying a used generator and warn of shrinking accredited capacity
Summary
Electric operations staff recommended purchasing a used generator to shore up local generation capacity, outlined a roughly $810,000 purchase estimate (installation excluded), and warned accreditation cuts have reduced available capacity by about 10%.
Electric operations staff told the council that buying a used generator now may be prudent to protect local capacity and affordability.
"If we could figure out a way to swing purchasing it now and then work on the next couple years and try and do budget for the install cost," said Jeff (staff), summarizing the rationale for buying a used unit that fits the city's voltage. Jeff put a purchase-and-delivery placeholder at about $810,000 but emphasized that does not include installation, switchgear or other site work.
Jeff also discussed longer-term capital needs: a Newton substation transformer overhaul estimated around $250,000 in 2027 and a marketplace placeholder for future generation replacements toward 2030. He warned that recent accreditation adjustments by the regional grid operator have reduced accredited capacity on some units by roughly 10%: "A couple of our units' accredited capacity is going to be, and it is lower than what all of us thought it was going to be." He said the city currently has an estimated 2'3 megawatts of surplus accredited capacity but that retirements of older downtown assets could tighten margins sooner than expected.
Councilmembers asked about alternatives such as leasing, phasing, or buying later. Jeff said staff would look for options and noted that used equipment can be roughly half the price of new units, but cautioned that spares and installation still add cost and complexity.
Staff said they will return with a funding and installation plan and noted the electric-fund work session scheduled for June 10 will focus on fund-specific details.
