[techsupporter]

The overwhelming majority of retail electric plans in Texas are fixed or nearly-fixed rate. By "nearly," I mean the rate changes by bands based on time (e.g. power you use after 10pm is $0.05/kWh where power you use between 12pm and 4pm is $0.21/kWh).

Some plans are so-called variable rate where the per-kWh rate you pay changes per month based on the price of natural gas.

But an increasing majority are these time-of-use, rates-can-move plans, of which Griddy's is the logical extreme.