If you live in Michigan and have Consumers Energy you can sign up for a free Nest thermostat E, using their Peak Power Savers Smart Thermostat Program. It allows them to change they thermostat during peak times.
And a link to the program.
Quote from the program link. “this doesn’t mean you lose control of your settings: you’ll always be notified about upcoming Energy Savings Events, and you can override automatic adjustments at any time”