Utilities with electricity production are more conservative because they have technical limitation due to the infrastructure they run.
However, there is a bunch of companies that buy and sell electricity on the open market, so they have a direct financial interest to play with this arbitrage.
In the UK, another reader has calculated the best case scenario was profitability in about 10 years. (his numbers ring true to me, I calculated recently that there was no reason to take an economy 7 contract for my electricity usage using similar data) That's a lot of time even in the utility market. So if batteries not attached to solar panel are going to be profitable (in the UK), that would be a future generation.
However, there is a bunch of companies that buy and sell electricity on the open market, so they have a direct financial interest to play with this arbitrage.
In the UK, another reader has calculated the best case scenario was profitability in about 10 years. (his numbers ring true to me, I calculated recently that there was no reason to take an economy 7 contract for my electricity usage using similar data) That's a lot of time even in the utility market. So if batteries not attached to solar panel are going to be profitable (in the UK), that would be a future generation.