Turning OFF Costs. Why?

There are some interesting ideas that are not batteries, that may suit some trickier locations.

ITM have their electrolysers for example. If the headline figure of 36kg of H2 per hour at 2MW DC input per module is more or less right, then if the hydrogen is burnt later, you get about half of your KVA t back.  At the moment the idea is to use it to thin natural gas,   in the manner of the Hydeploy system currently trialing hydrogen methane blends of by up to 20% by volume, in the domestic supply - and so far it seems to work just fine..

Compressed air is also in the frame with a thermal twist https://www.hydrostor.ca/technology/ for example.

Then there are tidal lagoons that can be over pumped in times of excess supply.

There is certainly a problem storing GWhrs safely, but in among the childish politics and soundbites, some serious folk are doing some serious engineering. The next 100 years or so should bottom the problem out.

Mike.

There are some interesting ideas that are not batteries, that may suit some trickier locations.

ITM have their electrolysers for example. If the headline figure of 36kg of H2 per hour at 2MW DC input per module is more or less right, then if the hydrogen is burnt later, you get about half of your KVA t back.  At the moment the idea is to use it to thin natural gas,   in the manner of the Hydeploy system currently trialing hydrogen methane blends of by up to 20% by volume, in the domestic supply - and so far it seems to work just fine..

Compressed air is also in the frame with a thermal twist https://www.hydrostor.ca/technology/ for example.

Then there are tidal lagoons that can be over pumped in times of excess supply.

There is certainly a problem storing GWhrs safely, but in among the childish politics and soundbites, some serious folk are doing some serious engineering. The next 100 years or so should bottom the problem out.

Mike.