Knox County approves Erwin Solar conditional use with screening, despite farmland concerns

Knox County's board voted on June 25 to approve a conditional-use permit for a commercial solar energy facility filed by R2CP Holdco LLC, operating as Erwin Solar LLC, for a site along County Highway 7 and County Highway 9. The action followed committee review, ZBA findings and public comment.

The zoning application (CU-05-25) moved from the Zoning Board of Appeals with a committee recommendation and included conditions: vegetative screening (to be planted on the north and east sides), native grasses and a pollinator seed mix beneath the panels, and a stormwater pollution prevention plan that must be submitted before a building permit is pulled and that will be held to Illinois EPA water bureau standards. The developer’s representative, who identified himself as Sean, told the board the site’s soil and proposed plantings are expected to reduce stormwater runoff compared with the existing row-crop farming.

The vote on the conditional use was recorded as 9 ayes and 4 nays with an abstention. In committee, the ZBA had approved the permit on a 3–1 vote with the vegetative screening condition. Several ZBA members and public commenters had flagged concerns that screening commitments and other mitigation measures be put in writing and made enforceable; the developer agreed to include screening as a condition of approval.

Opponents cited farmland protection and visual impacts. Farmer Dale Carlson, who spoke during public comment, urged the board to deny the request and cited prime farmland ratings and site scoring: “I’m asking you to deny the approval of KC-EO5-25 as a request for a solar energy farm on this parcel,” Carlson said, referring to soil protection scores and a proposed panel count and acreage. Board members asked for the screening and runoff commitments to be specified in permit conditions; staff confirmed the facts and findings from the ZBA include the east and north screening requirement.

Developer Sean answered runoff questions by describing the vegetation and regulatory oversight: “We’re gonna be having native grasses and pollinator seed mix that are underneath the panels. That will actually increase water absorption and decrease overall stormwater runoff,” he said, and added the project will comply with Illinois EPA standards and submit a stormwater pollution prevention plan prior to construction.

Next steps: The conditional-use approval is subject to those conditions; if the developer fails to meet the permit conditions, enforcement would follow through county permitting procedures. The board’s approval does not change state regulations that govern solar siting and water quality.