July 31 — The Texas law that deregulated the state’s power market set up three distinct areas: generation and retail sales, both which invite companies to compete for shares of these markets, and distribution, which is controlled by a single utility in each market. The state Public Utility Commission oversees distribution utilities, such as CenterPoint in Houston and Oncor in Dallas, limits the profits they can earn from their monopoly operations and mostly prohibits them from directly participating in the other sectors.

— Houston Chronicle