Texas electricity rates in 2019 were relatively flat compared to the prior year. And if you were in a fixed rate contract throughout 2019, you had a secure price. But those who were on a variable rate or a wholesale index rate (i.e. Griddy Energy) had their rate explode in mid August when ERCOT hit a historic usage level.
So what will happen in 2020? It all depends. But indications are that market forces are driving up retail energy prices in the short term, and that long-term contracts might be the way to go this year.