- Feb. 27: The first smart meter is installed as part of CenterPoint Energy's five-year rollout of the Advanced Metering System (AMS).
- March 2: CenterPoint Energy Gas Transmission Company (CEGT) executes a definitive agreement with Chesapeake Energy Marketing, Inc (CEMI) to transport Chesapeake’s growing Haynesville shale natural gas production.
- July 31: CenterPoint Energy Houston Electric, LLC announced a settlement agreement with the Public Utility Commission of Texas (PUC) staff and the City of Houston in its proceeding before the PUC to recover approximately $663 million in storm recovery costs the company incurred to restore service following Hurricane Ike.
- Aug. 1: CenterPoint Energy Houston Electric LLC, reached a significant milestone when it completed the installation of 45,000 smart meters and started delivering enhanced smart meter functionality to Retail Electric Providers (REPs), including 15 minute interval energy usage data.
- Aug. 12: CenterPoint Energy Gas Transmission Company (CEGT), announced the start of a non-binding open season to gauge market interest in an additional expansion of its core pipeline system in eastern Arkansas.
- Sept. 9: CenterPoint Energy Field Services, Inc. (CEFS) announced that it has entered into long-term agreements with subsidiaries of EnCana and Shell to provide gathering and treating services for their growing Haynesville Shale natural gas production. CEFS also acquired gathering facilities from EnCana and Shell in De Soto and Red River parishes in northwest Louisiana.
- Oct. 27: CenterPoint Energy Houston Electric LLC, was notified by the U.S. Department of Energy (DOE) that it has been selected to negotiate a $200 million award for its advanced metering system and intelligent grid projects.
- Nov. 19: An indirect wholly-owned pipeline subsidiary of CenterPoint Energy, Inc. and NextEra US Gas Assets, LLC, announced that they have signed a joint development agreement to explore the construction of a pipeline in north Louisiana to transport natural gas from the expanding Haynesville Shale area.
- Nov. 25: CenterPoint Energy Restoration Bond Company, LLC closed on the sale of $664.8 million in storm recovery bonds, also known as securitization bonds, to recover costs CenterPoint Energy Houston Electric, LLC incurred in 2008 to restore service following Hurricane Ike.
- On May 5, CenterPoint Energy Houston Electric filed with the Public Utility Commission of Texas (PUC) an Advanced Metering System (AMS) initial plan to deploy up to 250,000 interactive meters and related infrastructure over a three-year period. AMS should encourage greater energy conservation by giving Houston-area electric consumers the ability to better monitor and manage their electric use and its cost in near real-time.
- On June 25, CenterPoint Energy Gas Transmission Company (CEGT), announced the start of a non-binding, 31-day open season to gauge market interest in an additional expansion of its 1.5 Bcf/d, 42 inch Carthage to Perryville (Line CP) pipeline. CEGT has successfully completed the first three phases of Line CP and continues to receive expressions of interest in incremental capacity.
- Sept. 8 - Oct. 1: CenterPoint Energy prepares for and responds to Hurricane Ike, which struck the Texas Gulf Coast at Galveston on Sept. 13, resulting in the loss of electricity to 2.15 million customers, the largest power outage in Texas history. Over the next 18 days, working 16-hour shifts with the help of 11,000 workers from 35 states and Canada, employees replace 6,400 poles; 4,463 transformers and 332,045 feet of wire and cable to restore power to the citizens of Houston,"the Energy Capital of the World."
- On Dec. 1, Southeast Supply Header a 50/50 joint venture between affiliates of Spectra Energy Corp and CenterPoint Energy, announced it is conducting a non-binding open season for a proposed expansion along its existing 274-mile pipeline system.
- On Dec. 18, CenterPoint Energy Houston Electric received approval from the Public Utility Commission of Texas to deploy an advanced metering system (AMS) across its service territory over five years, beginning in March 2009. This innovative technology should encourage greater energy conservation by giving Houston-area electric consumers the ability to better monitor and manage their electric use and its cost in near real time.
- On April 11, IBM named CenterPoint Energy as a founding member of an industry coalition to accelerate "Intelligent Grid" technologies. CNP begins a limited deployment of Intelligent Grid technologies wiithin Its electric distribution system to improve reliability and energy efficiency.
- On May 11, CenterPoint Energy Gas Transmission Company (CEGT) marks the completion of its 172-mile Carthage to Perryville pipeline with a ribbon-cutting ceremony attended by a commissioner of the Federal Energy Regulatory Commission (FERC). The pipeline begins delivering 1 billion cubic feet per day of natural gas to nine interstate and two intrastate pipelines serving the Midwest, Northeast, and Southeast.
- On Sept. 20, Southeast Supply Header, LLC (SESH) received authorization from the Federal Energy Regulatory Commission (FERC) to construct, operate and maintain 270 miles of interstate pipeline that will bring alternative supplies of natural gas to the Southeast U.S. market.
- On Dec. 20, the Texas 3rd Court of Appeals in Austin reversed portions of an earlier decision by an Austin district court that would have allowed CenterPoint Energy Houston Electric (CEHE) to recover certain costs related to the capacity auction true-up aspect of CEHE’s 2004 stranded cost “true-up” filing. The company will appeal the decision to the Texas Supreme Court.
- In February, CenterPoint Energy was named by The Women’s Business Enterprise National Council (WBENC) to its annual list of America’s Top Corporations for Women’s Business Enterprises.
- In March, the U.S. Environmental Protection Agency (EPA) recognized CenterPoint Energy with the ENERGY STAR Sustained Excellence 2006 Award for its continued leadership in protecting the environment through energy efficiency.
- On Aug. 23, Southeast Supply Header, LLC, a CenterPoint Energy/Duke [now Spectra] Energy joint venture, announced an agreement with Florida Power and Light Company (FPL) for firm transportation service on its proposed pipeline that will bring natural gas from east Texas and north Louisiana to growing U.S. markets.
- On October 2, CenterPoint Energy Gas Transmission Company (CEGT) received a certificate from the Federal Energy Regulatory Commission (FERC) to build and operate a natural gas pipeline from Carthage, Texas to the company’s Perryville Hub in northeast Louisiana.
- CNP announced on April 13 that it completed the final step of the Texas Genco Holdings, Inc., transaction with the sale of the South Texas Project nuclear generating facility to Texas Genco LLC, formerly GC Power Acquisition LLC, for $700 million cash.
- Following Hurricane Katrina, CenterPoint Energy sent crews from Arkansas, Houston, and Shreveport to Louisiana and Mississippi to address damaged natural gas lines impacting thousands of CNP customers. Electric crews provided power restoration assistance to fellow utitlies in Alabama, Florida, Louisiana, and Mississippi, while CNP volunteers provided leadership and support in sheltering thousands of evacuees at the George R. Brown Convention Center in Houston.
- In less than one week, CenterPoint Energy restored power to 700,000 customers in the wake of Hurricane Rita. CNP also mobilized electric crews to assist Entergy, a neighboring utility, in restoring electric service to their customers while also helping the restoration of electric service (also outside CNP territory) to the pumping station that supplies water to ten cities as well as industries along the Houston Ship Channel.
- On Nov. 3, the company announced that it had combined its two regulated operations - electric transmission and distribution and natural gas distribution - into a new Regulated Operations business unit.
- On Nov. 16, CenterPoint Energy Gas Transmission Company (CEGT) and Duke Energy Gas Transmission (DEGT) [now Spectra Energy Corp.] announced an agreement to cooperate in the evaluation, marketing and development of a proposed 250-mile pipeline connecting CEGT’s Perryville Hub to DEGT’s partially-owned affiliate pipeline, Gulfstream Natural Gas System. The pipeline's capacity would be between 700 million cubic feet per day and 1.0 billion cubic feet per day and would connect CEGT’s Perryville Hub in northeast Louisiana to an interconnect with Gulfstream.
- On March 31, CenterPoint Energy’s electric transmission and distribution subsidiary, CenterPoint Energy Houston Electric, filed with the Public Utility Commission of Texas the final true-up application required by the 1999 Texas Electric Choice Law.
- On June 18, the Texas Supreme Court ruled that interest on stranded costs began to accrue as of January 1, 2002 and reversed the Public Utility Commission of Texas (PUC) rule to the contrary. The Court remanded the rule to the PUC to review the interaction between the Court's interest decision and the PUC's capacity auction true-up rule.
- On July 21, a definitive agreement was reached for the sale of Texas Genco Holdings to GC Power Acquisition LLC, an entity owned in equal parts by affiliates of The Blackstone Group, Hellman & Friedman LLC, Kohlberg Kravis Roberts & Co. L.P. and Texas Pacific Group, for approximately $3.65 billion in cash.
- On December 1, CenterPoint Energy ceased using its legacy names, Arkla, Entex, HL&P and Minnegasco, to become One Company known as CenterPoint Energy.
- On December 15, CenterPoint Energy completed the sale of its fossil generation assets (coal, lignite and gas-fired plants) to Texas Genco LLC, formerly known as GC Power Acquisition LLC. Texas Genco LLC is owned in equal parts by affiliates of The Blackstone Group, Hellman & Friedman LLC, Kohlberg Kravis Roberts & Co. L.P. and Texas Pacific Group.
- On January 6, CenterPoint Energy, Inc. completed the distribution of approximately 19 percent of the 80 million outstanding shares of common stock of its wholly owned subsidiary, Texas Genco Holdings, Inc., to CNP shareholders. Texas Genco shares began trading on the New York Stock Exchange the next day under its new TGN symbol.
- CenterPoint Energy extended natural gas service in the third week of March to its one-millionth Houston-area customer.
- On May 30, CenterPoint Energy announced that it had permanently reduced its bank credit facility to $2.846 billion since it amended its $3.85 billion credit facility on February 28.
- CenterPoint Energy announced on October 7 that it completed a refinancing of its $2.85 billion bank credit facility. On September 9, the company and its subsidiary, CenterPoint Energy Houston Electric, LLC, issued $500 million of secured and unsecured debt, which was used to reduce the credit facility to $2.35 billion. The company closed on a new $2.35 billion credit facility to replace the prior facility. The new three-year facility was composed of a revolving credit facility of $1.425 billion with a 12-bank syndicate and a $925 million term loan from institutional investors.
- Reliant Energy announced on July 8 that the Securities and Exchange Commission had approved Reliant Energy's separation plan, giving the company the green light to spin off Reliant Resources and officially adopt the CenterPoint Energy name.
- On Oct. 1, CenterPoint Energy and Reliant Resources officially separated; CenterPoint Energy was formed with gas and electric energy delivery businesses and began trading on the New York Stock Exchange as CNP.
- Reliant Resources, an unregulated electricity and energy services company, began trading on the New York Stock exchange on May 1.
- Reliant Energy's new name, CenterPoint Energy, was revealed on October 10.
- Special shareholder's meeting held on December 17 to approve restructuring and merger of Reliant Energy and CenterPoint Energy.
- Reliant Energy announced on July 27 that it planned to split its business into separate regulated and unregulated companies.