Peoria County Zoning Board of Appeals Hearing

The Peoria County Zoning Board of Appeals hearing on September 30, 2026, continued consideration of the proposed Four Creeks wind energy project. Expert testimony addressed sound, shadow flicker, setbacks, ice shed and blade-failure risks, and wind-turbine wake turbulence and aviation safety. Dr. Olson testified that modeled sound at residences was below levels he considered harmful to sleep, while acknowledging that some sound contours could encroach on usable residential property and that final turbine selection and operating modes would matter. The testimony also addressed up to 64 nonparticipating residences modeled above 30 hours of shadow flicker; Olson said curtailment would be needed and recommended a detailed curtailment plan, final sound and shadow-flicker reports, and review of SCADA records before building permits. Board members questioned how curtailment would be specified and verified and whether the application materials demonstrated compliance; no board determination on those issues was made in this excerpt.

Dr. Rogers testified that, based on his research and modeling, ice-shed and blade-failure risks at the proposed setbacks were low and turbine-wake turbulence did not pose a flight hazard. He said the applicant had told him it would install an icing-detection system and would curtail turbines near aerial-application activity, while cross-examination noted those commitments were not specified in the application. The hearing excerpt records no procurement activity, spending decision, motion, or vote; testimony continued with another witness scheduled after a recess.