When the state of Texas deregulated the electricity market, the former Houston Lighting & Power was split into several companies. In 2003 HL&P was split into Reliant Energy, Texas Genco, and CenterPoint Energy. Until December 15, 2004, CenterPoint Energy and its predecessors operated in its various markets under these names; they were used separately prior to Reliant Energy, and later in conjunction with the Reliant Energy and CenterPoint Energy names:
In late 2004, four private equity firms—the Texas Pacific Group, the Blackstone Group, Kohlberg Kravis Roberts, and Hellman & Friedman—combined forces to purchase Texas Genco from Centerpoint. Later in 2006, Texas Genco was sold to NRG Energy of Princeton, N.J. On April 23, 2018 CenterPoint Energy and Vectren Corporation announced they have entered into a definitive merger agreement. ;September 2008 power outage Hurricane Ike caused great disruption of service in the Greater Houston Area, wiping out 2.1 million of CenterPoint Energy's 2.26 million clients' electricity. This was the largest power outage in the company's 130-year history, and the largest in the state's history. ;Smart meter pilot program In March 2009, the company’s five-year smart meter deployment began, delivering enhanced smart meter functionality to Retail Electric Providers. The company worked with the Department of Energy for a pilot program in Texas centered on energy consumption. After working with 500-residential electricity customers in the Houston area, it was found that by using a smart meter, consumers cut down on energy use for the home. The pilot program was funded in part by the $200 million it received from the federal stimulus act. Electric vehicles In 2010, CenterPoint Energy and Ford Motor Company formed a partnership to promote adoption of electric vehicles. The two companies teamed up to work together to create electric vehicle consumer outreach and education programs; they also distributed details to various stakeholders about charging needs and the requirements needed to "ensure the electrical infrastructure can support the necessary demand." Additionally: "The Ford and CenterPoint Energy collaboration also includes developing strategies to minimize the emissions and distribution impacts of charging electric vehicles by using statewide system renewable energy resources and more efficient use of household electricity."
Criticism
On December 16, 2005, CenterPoint Energy Inc. said it would restate its finances for 2004 and the first three quarters of 2005 to correct accounting errors that overstated revenue and natural gas expenses. In December 2011, the non-partisan organization Public Campaign criticized CenterPoint Energy for spending $2.65 million on lobbying and not paying any taxes during 2008-2010, instead getting $284 million in tax rebates, despite making a profit of $1.9 billion, and having an executive pay between $12 and $13 million for its top 5 executives.