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Aurora previews developer‑owned solar array for Church Road water tank; city staff cites $452,000 savings over 25 years
Summary
City staff presented a proposed developer‑owned solar array at the Church Road water tank site that would supply about 70% of the site’s electricity needs; the planned power‑purchase agreement and land lease would require council approval and must meet a July 4 federal tax‑credit start deadline.
City staff and developer representatives briefed the Committee of the Whole on June 2 about a proposed ground‑mounted solar array next to the Church Road elevated tank (2680 Church Road) and a corresponding power‑purchase agreement (PPA) and lease.
Allison (city staff) said the arrangement would be developer‑owned: the private developer would finance, construct, operate and maintain the array and the city would buy the electricity it produces under a long‑term PPA. "This will save the city approximately $452,000 over a 25‑year term," Allison said, and staff said the array is expected to cover roughly 70% of the site’s historical electricity consumption.
Arie Shramml of Progressive Energy Group explained the selection process: an RFQ evaluated multiple city‑owned sites and three vendors replied; 548 Energy was selected for this site due to competitive pricing, financial capacity and community involvement. The project as presented is a 25‑year contract with a 3% annual price escalator, an annual production guarantee (the vendor guarantees a minimum production threshold and will maintain the system), and an option at contract end for the city to purchase the array at fair market value, extend the contract, or require developer removal at the developer's expense.
Technical constraints shaped the design: presenters said the field avoids the well access area and a nearby communications tower; the developer will maintain ground cover inside the fenced array. The project is designed to generate about 637,000 kWh per year and roughly 15 million kWh over 25 years, presenters said.
Timing was a central concern. Officials said federal investment tax incentives make the economics feasible and those incentives require projects to ‘‘start’’ by July 4 (meaning a contract and initial procurement activity must be in place before that date). Arie said the tax credit deadline compresses the procurement schedule and explained that projects may be staged but must have initial materials procurement and contract commitments completed to qualify.
Councilmembers sought practical detail about how savings will appear in municipal accounts and whether the planned site work will harm vegetation or habitats. Staff said the immediate fiscal effect will be reflected in enterprise fund energy line items (water/sewer), and that the area shown in presentation materials had been mowed for the site. 548 Energy and Progressive Energy Group said ground‑mounted arrays have recyclable elements and that the developer will cover removal and disposal costs at contract end.
Next steps: staff will circulate final PPA and lease drafts to the council when complete and bring a resolution for approval. Council members asked for copies of the final agreements and for finance to show how projected savings translate into budget line‑item reductions in the water and sewer enterprise fund.
Why it matters: the proposal offsets utility costs for a city enterprise site, leverages federal incentives, and includes a workforce development commitment tied to a local training hub; it creates near‑term procurement deadlines for council action and long‑term operations implications for the water/sewer fund.
