TXU power plants have some of the cleanest air emission rates in the nation. Because of TXU's strict adherence to air emission regulations, the company's air quality performance rates are among the very best in the nation. TXU frequently upgrades its facilities to be cleaner and more efficient producers of electricity.

TXU's emission rates for electric generation from fossil fuels are below the national average. Compared to the 50 largest power companies using fossil fuels, TXU's rate of sulfur dioxide (SO) emissions is 54 percent below the industry average. TXU's emission rate for carbon dioxide (CO2) is 16 percent below the national average. Its nitrogen oxide (NOx) emission rate is 38 percent below the national average.

More than a dozen state and federal agencies regulate TXU power plant emissions and the plants consistently receive superior environmental ratings from those agencies. (Figures are based on 1999 emission rates.)

TXU has also assumed a leadership role in a voluntary reduction of NOx emissions in Dallas/Fort Worth, located in north central Texas. TXU has reduced NOx emissions 30 percent in the Dallas-Fort Worth area, which is the equivalent of removing nearly 300,000 cars. Nitrogen oxides are a form of nitrogen and oxygen that combine together at high temperatures, usually during the combustion of fossil fuels. When nitrogen oxides are combined with other elements and sunlight, they can create ground ozone.

Clearly, air quality improvements must focus on all areas that contribute to emissions. Two-thirds of NOx emissions in Dallas/Fort Worth come from mobile sources and less than 14 percent come from power plants. In the first six months of TXU's voluntary NOx program, the effort led to NOx reductions equal to removing some 90,000 cars and trucks from the roads. TXU's effort is part of a larger statewide initiative in Texas to reduce air emissions.

TXU is a pro-active leader in air quality through the Climate Challenge Program and voluntary nitrogen oxide emission reductions.

The electric utility industry initiated The Climate Challenge Program to encourage voluntary reductions of greenhouse gas emissions. Greenhouse gases include carbon dioxide, methane, freon, water vapor, nitrous oxide, and a host of other compounds. Some occur in nature and some are man-made.

TXU played an integral leadership role in the development of the electric utility industry's Climate Challenge Program to reduce carbon dioxide levels. Through the program, TXU has reduced carbon dioxide emissions by more than 127 million tons since 1991.

TXU's Climate Challenge Program, already accomplishing some of the largest reductions of greenhouse gas emissions in the nation, was recently revised to reflect even more benefits in 2000.

The program, for which the Nature Conservancy of Texas serves as an adviser, is projected to have reduced, eliminated or avoided more than 127 million tons of carbon dioxide emissions since 1991, three million tons more than originally estimated.

The TXU program is committed to two Electric Utility Initiatives: the National Earth Comfort Program and the Utility Forest Carbon Management Program. Reductions from 1991-1995 total almost 63 million tons, of which 18.7 million tons occurred in 1995 alone.

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.