Opinion: July heat wave revealed the challenges facing Maine’s electrical grid

PORTLAND PRESS HERALD • August 28, 2026

The prolonged heat wave leading into the Fourth of July holiday reminded us that a reliable electric system must be ready for many different kinds of stress, including extreme heat. What happened in early July demonstrates why continued investment in grid infrastructure remains essential: reliability challenges are growing. Maintaining reliability in the decades ahead will require both innovation and steady investment in the electric system. ~ Linda Ball, president and CEO, Central Maine Power