Tallgrass Energy GP, LP (NYSE: TEGP) announced today the commencement, subject to market conditions, of an underwritten public offering of 8,000,000 Class A shares representing limited partner interests held by funds affiliated with Kelso & Company and The Energy & Minerals Group (the "Selling Security Holders"). The Selling Security Holders also intend to grant the underwriters a 30-day option to purchase up to an additional 1,200,000 Class A shares. TEGP will not receive any proceeds from the sale of the Class A shares in the offering. Goldman, Sachs & Co. is acting as the sole book-running manager for the offering. When available, copies of the preliminary prospectus supplement, prospectus supplement, and accompanying base prospectus relating to the offering may be obtained free of charge on the Securities and Exchange Commission's website at www.sec.gov or from the underwriters of the offering as follows: Goldman, Sachs & Co.200 West StreetNew York, NY 10282Attn: Prospectus DepartmentEmail: email@example.com The Class A shares will be offered and sold pursuant to an effective shelf registration statement previously filed with the Securities and Exchange Commission. This press release does not constitute an offer to sell or the solicitation of an offer to buy the securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The offering is being made only by means of a prospectus and related prospectus supplement meeting the requirements of Section 10 of the Securities Act of 1933, as amended. About Tallgrass Energy GP, LP Tallgrass Energy GP, LP (NYSE: TEGP) is a Delaware limited partnership that has elected to be treated as a corporation for U.S. federal income tax purposes. TEGP owns a controlling membership interest in Tallgrass Equity, LLC through its role as the sole managing member. Tallgrass Equity, LLC owns, both directly and through its ownership of the general partner of TEP, all of TEP's incentive distribution rights, 100 percent of the general partner interest in TEP and 20,000,000 TEP Common Units.