One type of nuclear power plant uses a pressurized water reactor. In the plant's containment structure, water under pressure to prevent boiling flows through the reactor.

There, the nuclear chain reaction in the fuel rods heats the water to approximately 600 degrees Fahrenheit (315.5 Celsius). This hot water gets pumped to the steam generator, or heat exchanger, where the cooler water flowing from the condenser becomes steam. The steam drives a conventional steam turbine.

The condenser converts used steam back into water after it passes over the blades of the turbine, and the water recirculates on the outside of the steam generator tubes. The steam turbine turns the electric generator to produce electricity.

TXU Energy (REP Certificate No. 10004) and Luminant are not the same company as Oncor Electric Delivery and are not regulated by the Public Utility Commission of Texas, and you do not have to buy TXU Energy's or Luminant's products to continue to receive quality regulated services from Oncor Electric Delivery.