Nuclear expert confirms absolute madness of Australian government, page-64

''Wake the hell up. If the battery goes flat, the sun isn't shining or the wind doesn't blow then there is no power. THAT makes them unreliable''

never heard of a thing called 'network'? 'redundancy?'

'' Right now I have a solar hot water system that hasn't got HOT water. Lucky that there is a power back up''

uh huh - you're onto it - it's called redundancy

now you extend your idea to an actual network - a national network

it's called network engineering