Enable Midstream Partners Announces Pricing of Initial Public Offering of Common Units

Enable Midstream Partners, LP today announced the pricing of its initial public offering of 25,000,000 common units representing limited partner interests at a price to the public of $20.00 per common unit. The underwriters of the offering have a 30-day option to purchase up to an additional 3,750,000 common units from an affiliate of ArcLight Capital Partners, LLC. The common units are scheduled to begin trading Friday, April 11, on the New York Stock Exchange under the symbol “ENBL.” The offering is expected to close April 16, 2014, subject to customary closing conditions.

At the conclusion of the offering, the public will own approximately 6.0 percent of the limited partner interests in Enable Midstream, or 6.9 percent if the underwriters exercise in full their option to purchase additional common units. CenterPoint Energy (NYSE: CNP) and OGE Energy Corp. (NYSE: OGE), through certain of their subsidiaries, will own 54.7 percent and 26.7 percent, respectively, of the limited partner interests in Enable Midstream. Affiliates of ArcLight Capital Partners, LLC will own 12.4 percent of the limited partner interests in Enable Midstream, or 11.5 percent of the limited partner interests if the underwriters exercise in full their option to purchase additional common units.

Enable Midstream owns, operates and develops strategically located natural gas and crude oil infrastructure assets. Enable Midstream’s assets include approximately 11,000 miles of gathering pipelines, 12 major processing plants with approximately 2.1 billion cubic feet per day of processing capacity, approximately 7,900 miles of interstate pipelines (including Southeast Supply Header, LLC), approximately 2,300 miles of intrastate pipelines and eight storage facilities comprising 86.5 billion cubic feet of storage capacity.

Enable Midstream is a Delaware limited partnership formed by affiliates of CenterPoint Energy, OGE Energy and ArcLight Capital Partners, LLC. The partnership is managed by a general partner whose governance is shared by CenterPoint Energy and OGE Energy on a 50/50 basis. Morgan Stanley, Barclays Capital, Goldman, Sachs & Co., Citigroup, Deutsche Bank Securities, J.P. Morgan, UBS Investment Bank and Wells Fargo Securities are acting as joint book-running managers for the offering, and BofA Merrill Lynch, Credit Suisse and RBC Capital Markets are acting as co-managers.

The offering is being made only by means of a prospectus. When available, copies of the prospectus may be obtained from:

Morgan Stanley & Co. LLC
Attn: Prospectus Department
180 Varick Street, 2nd Floor
New York, NY 10014
prospectus@morganstanley.com

Barclays Capital Inc.
c/o Broadridge Financial Solutions
1155 Long Island Avenue
Edgewood, NY 11717
Telephone: 1-888-603-5847
barclaysprospectus@broadridge.com

Goldman, Sachs & Co.
Attn: Prospectus Department
200 West Street
New York, NY 10282
Telephone: 1-866-471-2526
Facsimile: 212-902-9316
prospectus-ny@ny.email.gs.com

A registration statement relating to these securities has been filed with and declared effective by the Securities and Exchange Commission. To obtain a copy of the prospectus, free of charge, visit the SEC's website (www.sec.gov) and search under “Enable Midstream Partners, LP.”

This news release shall not constitute an offer to sell or the solicitation of an offer to buy the securities, nor shall there be any sale of the securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or jurisdiction.

CenterPoint Energy, Inc., headquartered in Houston, Texas, is a domestic energy delivery company that includes electric transmission & distribution, natural gas distribution and competitive natural gas sales and services operations.

OGE Energy Corp. is the Oklahoma City-based parent company of Oklahoma Gas & Electric, a regulated electric utility with approximately 805,000 customers in Oklahoma and western Arkansas.

Boston-based ArcLight Capital Partners, LLC is one of the leading private equity firms focused on North American energy infrastructure assets. Since its establishment in 2001, ArcLight has invested over $10 billion across multiple energy cycles in more than 100 power, midstream and production assets.

This news release includes forward-looking statements. These forward-looking statements involve risks and uncertainties, including risks relating to the securities markets generally. When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements in the preliminary prospectus. Enable Midstream undertakes no obligation and does not intend to update these forward-looking statements to reflect events or circumstances occurring after this news release. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this news release.