How does solar energy work?
When sunlight hits the solar panels on your roof, your inverter converts it into electricity that is ready to use in your home. If you don’t use the electricity made by the solar panels, your meter measures how much of your excess electricity is fed back into the network for someone else to use. The meter also helps measure how much electricity you use from the network when there is no sun to generate your own solar energy.
You can find out more here.