How to sign up for a virtual power plant—and decide whether you should

MIT Technology Review’s How To series helps you get things done. Your thermostat may not look like a power plant. Neither does your electric vehicle, home battery, or HVAC system. But utility and energy companies increasingly want to treat them like one.A virtual power plant, or VPP, is a collection of household devices (such as smart thermostats, electric-vehicle chargers, home batteries, and solar panels) that a utility can control. Usually that means commanding the devices to draw