Illinois House explores data center impact on energy supply, demand

The Illinois House Executive Committee held a hearing to discuss the significant impact of data centers on the state's energy supply and demand, revealing a massive and sudden spike in electricity needs. Brian Granahan, director of the Illinois Power Agency, indicated that pending demand in the customer connection queue now exceeds what the system has traditionally handled. Representatives from major electric supply companies, Ameren and Commonwealth Edison (ComEd), testified that data centers constitute a majority of the large load projects in their pipelines. Max Leichtman, ComEd's director of economic and workforce development, warned that if all projects reach their maximum requested demand, it could more than double the system's peak demand, which took 120 years to achieve, by 2040 or 2045. However, he noted this load would come online in stages, allowing for utility planning. The discussion also covered legislative efforts to address these challenges. Granahan highlighted the 2025 Clean and Reliable Grid Affordability Act (CRGA), which empowers the IPA to pursue additional generation and reduce demand through initiatives like virtual power plant programs. The POWER Act, a key proposal for regulating data centers, would require these companies to invest in renewable energy for their facilities and be placed in their own rate class, a measure supported by Sarah Moskowitz of the Citizens Utility Board to control costs for other consumers. The Illinois Commerce Commission has already allowed ComEd to increase charges for large-load developers, a move Ameren is also exploring. State officials are also assessing regulatory and legal barriers for new nuclear power following Gov. JB Pritzker's executive order, which came after CRGA ended a moratorium on new nuclear plant construction. However, new energy supply options, including wind and solar farms, require significant time to implement.