Although it’s part of an industry famous for changing slowly, New Mexico’s largest utility has moved quickly to update its electricity supply to cleaner alternatives.
The Public Service Company of New Mexico, or PNM, said it delivered 80% carbon-free electricity in 2025 after investing in solar energy, batteries, and wind. During the daytime, the sun powers fans, air conditioners, and more across the state. In the evening, solar energy stored in batteries keeps the lights on, while the wind turns turbines that meet other electricity needs. (For details, see part one of this story.)
This remarkable transformation to a climate-friendly system has unfolded in just five years. As recently as 2021, power plants fueled by climate-warming coal and gas generated nearly 80% of PNM’s total electricity.
“We know it’s the right thing,” said Laurie Williams, PNM’s senior vice president of integrated planning and transmission development.
An ambitious policy
