Electricity demand in the PJM Interconnection and ISO New England reached multiyear highs on June 23 and June 24, respectively, the Energy Information Administration said on June 27. Electricity demand increased significantly due to a heat wave that affected most of the Eastern United States the week of June 23.

The National Electrical Manufacturers Association on June 25 said it has “developed a clear, consensus-based blueprint that helps utilities and manufacturers implement interoperable, efficient, and scalable digital substations."

Wisconsin-based utility We Energies announced on June 25 that the company plans to extend the operating lives of units 7 and 8 at the Oak Creek Power Plant and expects to have the units available to meet high energy demand periods through the end of 2026.

Tantalus Systems on June 25 announced that the Indiana Municipal Power Agency will be deploying Tantalus’ AI-powered TRUGrid Reliability and TRUGrid Transformer analytics across all 19 of its member utilities participating in the Agency’s AMI program with Tantalus.

The Illinois Municipal Electric Agency, a wholesale electric supplier to 32 municipally owned utilities, started receiving 25 megawatts of energy and capacity from Big River Solar in Southern Illinois beginning June 1, 2025.

The Kentucky Municipal Energy Agency announced the official ribbon-cutting ceremony for the Ashwood Solar I project, which took place on June 25, 2025.