In the United States, a 2017 kitchen audit by The NPD Group showed that 35% of households cook on gas stoves while 55% cook with electricity. And while the U.S. Environmental Protection Agency regulates outdoor air quality, it’s much harder to regulate what’s inside your home, and that’s the air you breathe most of the time: People spend up to 90 percent of the day indoors, according to the EPA.
The utility commissioners were engaging in an exercise of what-ifs. They regulate Xcel, which is responsible for more than 60% of the state’s electrical sales, and Black Hills Energy, also an investor-owned utility. Periodically, those utilities must submit plans to show how they intend to meet demands. Part of the dance between regulators and utilities is creation of models that seek to depict future trends.