When I learnt about how the Texas grid was a disconnected electrical island I thought maybe there is now a market to charge transport-trailer sized batteries out of state, drive them into Texas and drain them into the grid.
Texas grid is big enough to do fine on it's own. The problem is that power providers (and gas companies) are given the upper hand and never had to winterize more than a token amount, hence the house of cards came down last February and around 500 people died as a result. The Texas lege passed an "oops" bill that put on a couple bandaids, but the same thing is bound to happen again with the next big Freeze comes along.