This is how they do it in California. They tell you that when it is hot, you need to stop using your appliances and air-conditioning. Otherwise they make it a premium price for use of energy during the time of high demand. Or, you can sign up for the voluntary rolling outages to be a good climate crisis citizen and when they need to cut the juice to someone, you get the outage, and they call it a 'brown-out'. You get to sweat and suffer in the heat and the glory of saving the universe from imaginary shortage in power that really is a desire not to provide the service you paid for in energy price hikes or the energy infrastructure improvements that you vote for via issuing bonds bonds bonds for more government debt every single election.