TXU Energy and Reliant Energy have begun offering electricity pricing plans that charge more for power consumed during peak use times and less during low-demand times.
The companies only offer the pricing plans in neighborhoods where Oncor has installed advanced meters. The new meters can tell electric companies how much power a customer uses every 15 minutes, allowing companies to charge different prices throughout the day.
Electricity industry officials expect such pricing plans, known as time-of-use pricing, to prompt customers to dial down power use during the late afternoons, when power plants are running at full tilt and wholesale power prices spike.
TXU charges 8.9 cents per kilowatt-hour for electricity used off peak. Power used during peak times - such as midafternoon during the summer months - costs 24.3 cents.
TXU time-of-use customers also get a free thermostat that shows how much power they are using.