Clean Energy group calls for more public scrutiny of data center energy costs in Iowa
Iowa Business for Clean Energy is urging the Iowa Utilities Commission and policymakers to scrutinize how utility companies, specifically Alliant Energy, use data center energy demands to justify building new natural gas peaker plants and potentially pass costs to ratepayers. Alliant Energy refutes these claims, stating existing customers will not bear the costs of new large-energy-user growth and that new facilities are reviewed by the IUC. The debate centers on confidential rate agreements with data centers and whether current laws adequately protect ratepayers from bearing the cost of infrastructure expansion.
Iowa Business for Clean Energy has called on the Iowa Utilities Commission (IUC) and state policymakers to increase scrutiny of utility companies, particularly Alliant Energy Corporation, regarding the financing of new energy infrastructure driven by data center demand. The clean energy advocacy group alleges that Alliant Energy utilizes "loopholes" and "secret" rate agreements with data centers to construct natural gas "peaker" plants without adequately demonstrating their benefit to ratepayers or ensuring data centers cover the full costs. Bob Rafferty, executive director of Iowa Business for Clean Energy, criticized Iowa's "utility friendly laws," arguing they allow plants to be built before the IUC can fully assess the appropriateness of the investment in a rate case.
Alliant Energy, in response, stated that "existing customers will not pay for new large-energy-user growth" and that rates for large energy users are structured to cover the full cost of serving their load, including new infrastructure. The utility is planning three natural gas peaker plants—the Morgan Valley Energy Center in Cedar Rapids, Bobcat Energy Center in Marshalltown, and Riverhawk Energy Center in Cerro Gordo County—which it claims are necessary to meet growing demand and load obligations, not solely due to data centers. Alliant's earnings reports show substantial contracted demand from data centers and anticipated load growth, and they have confidential rate filings with QTS for its Cedar Rapids data center designed to recover marginal costs.
Growing Iowa’s Economy, a group supporting responsible data center development, countered Iowa Business for Clean Energy’s claims, asserting that the investments are subject to future IUC review and that agreements include protections against shifting costs to existing customers. Jesse Harris, a spokesperson for Growing Iowa’s Economy, emphasized that questioning energy investments is fair, but it's "not fair to tell Iowa families they are being handed a multibillion-dollar energy bill while ignoring the agreements, regulatory oversight and customer protections specifically designed to prevent that from happening." The debate highlights ongoing concerns about transparency, cost allocation, and regulatory oversight in Iowa's energy sector amid growing data center expansion.