I see people talking about deficiencies in the Texas grid, and that may be true but hardly seems relevant to Houston; it's the Houston grid that seems to be acutely problematic. In fact, it occurred to me that with much of Houston still offline, the TX grid is probably less stressed than usual and a look at the dashboards on ercot.com would seem to confirm this - capacity is well over demand.
The state grid is problematic at other times, but in the case of storms, it's irrelevant when a fallen tree takes out a physical power line. It's more of a "last mile" issue.
The solution to last-mile problems is fewer miles. Fact is metro Houston takes up 15x more land than is really called for. A factor of 15 makes a significant difference in the cost of wires, pipes, and roads.
SimCity and Elon Musk to the rescue! See, we put satellites in space with giant solar panels on then and then just beam the energy down from space, directly to a receiver dish mounted on your rooftop, next to the starlink dish.
