One cannot "do something" until one fully understands what needs to be achieved. Well, I do lots of stuff, and did a quick back of the envelope calculation of the Li battery weight to store a days UK electricity consumption, with a few assumptions like batteries may get better. So 1 kWhr per kg of battery, fair enough? The battery for a day would weigh about 1 million tons! (50GW x 24 hrs etc). The problem is that this is more than all the Li cells ever made so far! To make the Grid work, it has been estimated we need between 20 and 30 days of storage. So 20-30 million tons of some of the most reactive materials on Earth, not in one place squire!. The biggest point is that is way more than the known reserves, and the UK is only 2% of the Electricity supply for the world! Either way we would end up in WW3 over resources.....

Realistically LiIon isn't the technology for long-term storage.  It's good for those sudden unexpected loads.  Perhaps a power station has gone offline and it will take an hour to ramp up another one.  LiIon cells can deliver a lot of current for their size if needed.

But there are other battery chemistries, and other ways of storing energy that wouldn't normally be described as "batteries".  We need to be seriously investigating those.  But this being the UK, we're more likely to wait for the Chinese to do it, and then buy all the storage from them.

Realistically LiIon isn't the technology for long-term storage.  It's good for those sudden unexpected loads.  Perhaps a power station has gone offline and it will take an hour to ramp up another one.  LiIon cells can deliver a lot of current for their size if needed.

But there are other battery chemistries, and other ways of storing energy that wouldn't normally be described as "batteries".  We need to be seriously investigating those.  But this being the UK, we're more likely to wait for the Chinese to do it, and then buy all the storage from them.