There are a few reasons. 1. TX has more heavy industry than CA. 2. CA has spent decades and billions on energy efficiency improvements. 3. CA prices are high

There are a few reasons. 1. TX has more heavy industry than CA. 2. CA has spent decades and billions on energy efficiency improvements. 3. CA prices are higher, which encourages lower demand, and encourages investments in efficiency. TX has lower prices which encourages more demand.