IL SB2181

Requires all data centers in Illinois to annually report energy consumption (in kilowatt-hours by month and source) and water consumption (in gallons by month and use type) to the Illinois Power Agency, beginning January 1, 2026, with reports due by March 31 each year

Mandates data centers report measures taken to improve energy efficiency or reduce water usage

Establishes fines up to $10,000 per violation for non-compliance, with collected funds deposited into the Energy Efficiency Trust Fund

Directs the Illinois Power Agency to conduct a comprehensive study within 12 months on data centers' impact on rate-paying customers, including effects on electricity demand, rate changes, and environmental impacts

Requires the Agency to publish annual reports summarizing statewide data center energy and water consumption trends, with legislative recommendations, while protecting proprietary information through aggregated and anonymized public data