Xcel Energy Inc. (NYSE: XEL) subsidiary Public Service Company of Colorado (PSCo) today announced that it closed an offering of $300 million of 2.25% first mortgage bonds due September 15, 2022 (the 2022 Bonds) and $500 million of 3.60% first mortgage bonds due September 15, 2042 (the 2042 Bonds). The 2022 Bonds and the 2042 Bonds are redeemable at any time subject to certain “make whole” provisions prior to March 15, 2022 and March 15, 2042, respectively. On or after these dates, the bonds are callable at par. BNP Paribas Securities Corp., Credit Suisse Securities (USA) LLC, Goldman, Sachs & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated, RBS Securities Inc., and US Bancorp Investments, Inc., acted as joint book-running managers for the offering. Mizuho Securities USA Inc. and Scotia Capital (USA) Inc. were co-managers for the offering. This announcement does not constitute an offer to sell or the solicitation of an offer to buy these securities nor shall there be any sale of these securities in any jurisdiction in which an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. The offering is being made only by means of a prospectus and related prospectus supplement. A prospectus supplement related to the offering has been filed with the Securities and Exchange Commission. Copies of the prospectus supplement and accompanying prospectus for the offering may be obtained on the Securities and Exchange Commission’s website at www.sec.gov. Alternatively, any underwriter or dealer participating in the offering will send you the prospectus if you request it by calling (i) Credit Suisse Securities (USA) LLC, toll free at 1-800-221-1037, (ii) Goldman, Sachs & Co., toll free at 1-866-471-2526, (iii) Merrill Lynch, Pierce, Fenner & Smith Incorporated, toll free at 1-800-294-1322, and (iv) RBS Securities Inc., toll free at 1-866-884-2071. Xcel Energy (NYSE: XEL) is a major U.S. electricity and natural gas company that provides a comprehensive portfolio of energy-related products and services to 3.4 million electricity customers and 1.9 million natural gas customers through its regulated operating companies in eight Western and Midwestern states. Company headquarters are located in Minneapolis. More information is available at www.xcelenergy.com.