Officials and lawmakers in at least six states are taking new steps to block utility rate increases as artificial intelligence data centers drive up energy demand and utility profits. Arizona, Indiana, Maryland, New Jersey, New York and Pennsylvania have all seen increased regulatory action targeting proposed rate hikes.

The Energy and Policy Institute reported that profits of 110 for-profit utilities rose from $39 billion in 2021 to over $52 billion in 2024. Arizona Attorney General Kris Mayes is challenging two utility rate increase requests of 14% each, while Pennsylvania Governor Josh Shapiro pressured PECO to withdraw a proposed 12.5% rate increase that would have added $20 monthly to average residential bills.

Utility companies defend their investment returns as necessary to maintain electric grids and ensure reliability. They point to federal data showing home electricity bills as a proportion of household income have fallen over recent decades. Calvin Butler, CEO of Exelon, told analysts the company recognizes affordability concerns and withdrew its rate request after stakeholder conversations.

The disputes center on the returns utilities receive on their investments, typically approved by state regulators. Consumer advocates argue these returns contribute to rising bills, with former utility executive Mark Ellis estimating about 10% of typical customer bills represent what he called "excess profit." In Indiana, AES Indiana has requested a 10.1% rate increase with a 10.7% return on investment.

Energy analyst Travis Miller said affordability has become the top concern for utility executives and investors. The voracious energy demands of AI data centers have created a construction boom in the energy sector while driving up electricity prices in some regions. New Jersey's Board of Public Utilities has launched what officials call one of the most significant regulatory reviews in a generation to examine how utilities should generate revenue in the modern energy system.