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Solar array on Arbor Avenue produced about 99% of projected output; consultants recommend renewing water‑station contract
Summary
A Progressive Energy representative told trustees the Arbor Avenue solar field generated roughly 608,000 kWh in its first full year (99% of the 613,000 kWh estimate), and recommended the village likely keep its current energy supplier and consider a 3–4 year contract while staff examines battery incentives.
A consultant from Progressive Energy briefed the Sugar Grove village board on March 31 about performance and contract options for the Arbor Avenue solar field that serves the village’s water pumping station. The presenter said the original first‑year forecast was 613,000 kilowatt‑hours; actual first‑year production was just over 608,000 kWh — roughly 99% of the estimate — and that panel degradation is expected to lower output about 0.5% annually.
The presenter told trustees the system cost was just over $1,000,000 and that major incentives — the federal investment tax credit (with village qualifying for a 40% rate because of an economic zone adder) and Illinois SRAC incentives — covered nearly 90% of the project’s cost. The consultant said the village has contractual production guarantees (panels guaranteed to produce at least 85% of expected volume) and noted the water pumping station remains the village’s single largest electricity user.
On procurement timing he said the village needs to sign a new electric supply contract by April 17 and that Progressive Energy’s analysis favors staying with the current supplier; price offers are volatile and data‑center demand has driven up regional prices. The presenter recommended a 3‑ or 4‑year term for a new supply contract, and flagged newly enhanced state and federal incentives for batteries that could speed payback on battery investments to two to three years in some cases. Staff said they would return with a long‑term contract recommendation at the next meeting.
What was decided: trustees agreed staff should return with a contract for board approval at a future meeting and to continue evaluating battery opportunities at village sites.
