Electricity is easy to take for granted – until it's not. The invisible power that lights your home, charges your devices and keeps appliances humming isn't something you think about every day.

The clean energy system stores energy from the sun or grid to power your home. And its growing ... spending just 8p/kWh for off-peak energy - you can charge a Tesla Model Y overnight for a few ...

It will store enough energy to power 30,000 homes for about an hour. Tesla's chief executive ... companies to switch off electricity to customers to protect the grid. The state will have the ...