District committee hears solar project update; presenters expect production revenue and aim for late‑year commissioning

A majority of the Finance & Facilities Committee meeting on May 11 focused on the district’s proposed rooftop solar project and the remaining steps before it goes to the full board.

Presenters told the committee the project’s net cost estimate fell after the team reduced the array footprint at Hinsdale Central because existing radio‑tower wiring limited usable roof area. They said the adjusted scope still delivers the revenue and payback profile presented in earlier meetings, though the Central campus will produce a smaller share of the district’s energy savings than originally projected. “We are making a lot of progress. We’re right to the finish line here,” one presenter said during the update.

Why it matters: staff said the project combines multiple incentives and revenue streams that materially affect cost and payback. The presenters outlined a federal investment tax credit (ITC) applied against the project cost (described in the meeting as a 40% ITC), a ComEd grant for public schools paid on a per‑kilowatt basis (reported in the meeting as $250 per kW), and recurring payments under the Illinois Shines program that will be based on verified production of renewable energy certificates (RECs) reported into GATS.

District staff provided production estimates tied to each campus: presenters said the installed array is expected to offset roughly 29% of consumption at Hinsdale South and about 21% at Hinsdale Central after the scope reduction. Presenters described measurement and verification (M&V) arrangements that produce an initial, higher first‑year M&V cost to confirm system output, with lower annual software/reporting costs thereafter to support Illinois Shines REC claims.

Financial assumptions and risks: presenters said their modeling uses conservative historical REC pricing and modest inflation assumptions; under those assumptions the project model showed an earlier positive cash flow point occurring shortly after year eight and the earlier modeling indicated a longer overall payback horizon. Committee members questioned sensitivity to utility price inflation and demand charges; presenters acknowledged those variables are material and said the district’s high school peak loads and demand charges could affect savings.

Schedule and approvals: presenters reported site visits were completed the previous week and that final engineering drawings and permit applications should be ready in roughly 20 days. They described a plan to stage materials and perform on‑roof work in ways intended to minimize disruption to summer activities, targeting construction completion on both campuses in the November–December window. Presenters cautioned that final energization depends on ComEd’s interconnection technical review and queue, which can extend timelines outside the district’s control.

Contract and budget notes: presenters said the initial contract review has only one or two remaining open items and that exhibits reflecting the presentation’s assumptions have been submitted; staff expects to bring contract documents to the board for approval in late May. Chief Financial Officer Josh Stevens told the committee the district expects to pay part of the project from this year’s operations and part from next year’s operations and maintenance budget.

What’s next: presenters said they will finalize permits, close remaining contract items and, if permits and interconnection proceed as expected, ask the board to authorize the project. The committee expressed general support for moving the item forward to the full board for approval.

Quote: Presenter: “We’re right to the finish line here.”

Ending: The committee moved on after receiving the update; staff will return to the board with final contract documents and a recommended authorization once permits and interconnection steps are clearer.