The heat and electricity energy storage need to grow to 46000 TWh [1]. The current value is about 10 TWh.
[1] https://uk.eragroup.com/wp-content/uploads/2021/09/Global_sy...
[1] https://uk.eragroup.com/wp-content/uploads/2021/09/Global_sy...
Addendum: please don't downvote @red75prime for bringing a fact to a fact based discussion.