Investor Presentaiton

Colorado Gas Utilities Ranked by Customers Served (2017) CO 1. Xcel Energy: 1,378,528 2. Colorado Springs Utilities: 202,514 3. Black Hills: 178,893 4. Atmos Energy: 119,146 5. Colorado Natural Gas: 21,391 6. City of Ft. Morgan: 4,678 7. City of Trinidad.: 4,134 8. City of Walsenberg: 1,651 9. Town of Rangley: 996 10. City of Center: 806 11.Ignacio Municipal Gas: 484 12. Town of Aguilar: 263 13. Clean Energy, LLC: 148 COLORADO

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