There are loads of things you can do to cut your energy bills - and many don't involve stumping up any cash up-front at all.
If you're worried about rising electricity prices, then going off-grid sounds attractive. But why not create an intelligent network of solar-powerd batteries that can reduce prices for all?
The advent of battery storage heralds an even deeper embrace of electric cars and renewable energy. But amid the green tech revolution, we should be wary of creating new pollution problems.