HOUSTON - April 6, 2017 - CenterPoint Energy announced today that its electric transmission
and distribution business, CenterPoint Energy Houston Electric, filed an application for
Distribution Cost Recovery Factor (DCRF) with the Public Utility Commission of Texas (PUC)
and the cities in its service area.

DCRF is an interim rate adjustment that, if approved, permits an electric utility to
implement new rates to account for changes in distribution-invested capital since its last rate
case.

“Houston’s economy continues to thrive and we are making significant capital
investments to meet the needs of our growing customer base and load,” said Kenny Mercado,
senior vice president of CenterPoint Energy’s Electric Operations.

This is the company’s third DCRF filing and represents a $44.6 million annual increase
over current rates to begin recovering approximately $479 million in distribution capital invested
in 2016. The estimated residential customer impact based on a monthly usage of 1,000 kilowatt
hours is an $0.80 increase billed to the consumer’s Retail Electric Provider. New rates are
expected to go into effect by September 1.

CenterPoint Energy, Inc., headquartered in Houston, Texas, is a domestic energy delivery
company that includes electric transmission & distribution, natural gas distribution and energy
services operations. The company serves more than five million metered customers primarily in
Arkansas, Louisiana, Minnesota, Mississippi, Oklahoma, and Texas. The company also owns a 54.1
percent limited partner interest in Enable Midstream Partners, a publicly traded master limited
partnership it jointly controls with OGE Energy Corp., which owns, operates and develops natural
gas and crude oil infrastructure assets. With more than 7,700 employees, CenterPoint Energy and its
predecessor companies have been in business for more than 140 years. For more information, visit
the website at www.CenterPointEnergy.com.

This news release includes forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995. These forward-looking statements are based upon
assumptions of management which are believed to be reasonable at the time made and are subject to
significant risks and uncertainties. Actual events and results may differ materially from those
expressed or implied by these forward-looking statements. Any statements in this news release
regarding future events, such as future regulatory actions on the DCRF application, future economic
conditions and any other statements that are not historical facts are forward-looking statements. Each
forward-looking statement contained in this news release speaks only as of the date of this release.

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