A bill for an act relating to the regulation of public utilities, including rate filings, rate adjustment mechanisms, virtual power plants, and integrated resource planning.

SF 2273 regulates Iowa's rate-regulated public utilities by setting rules for rate filings, automatic adjustments, virtual power plants, and long-term energy planning. It requires utilities to file a comprehensive rate review by July 1, 2027 (and every three years after), limits frequent rate change requests to once per year unless approved earlier, and bans automatic rate adjustments for electric utilities to recover transmission costs. The bill defines virtual power plants (customer-owned energy systems managed centrally) as non-public utilities requiring commission approval, mandating they benefit customers in their service area. Additionally, it requires electric utilities to submit integrated resource plans every three years, detailing energy needs, cost analyses, and infrastructure upgrades for 5- and 20-year horizons, with public access to planning data.