Gas Utilities Directory — utility profile
Colorado Natural Gas
Colorado · Investor-Owned · Major Regulated
Utility overview
- Utility name
- Colorado Natural Gas
- Legal name
- Colorado Natural Gas, Inc.
- Parent organization
- Summit Utilities, Inc.
- Ownership type
- Investor-Owned
- Utility class
- Major Regulated
- Rate jurisdiction
- Colorado Public Utilities Commission
- State directory
- Colorado utilities
- Customer classes
- Commercial, Residential
Official website and contact
- Official website
- www.coloradonaturalgas.com
- Customer service phone
- 1-800-720-8193
- Gas emergency
- 1-800-883-3181
- Not published
Contact details are shown only where the utility publishes them.
Published state services
Colorado
PUC-regulated service territories (Mountain/Eastern Colorado divisions per tariff).
Customer classes: Commercial, Residential
Last confirmed: August 20, 2026
State customer informationVerification sources
- CNG Current Tariff
Colorado Natural Gas, Inc. · Tariff — CO PUC No. 2 tariff; residential and commercial natural gas rates. (accessed 2026-08-20)
- Customer Notice
Colorado Natural Gas, Inc. · Tariff — Customer notice for residential and commercial natural gas rate schedules. (accessed 2026-08-20)
- Rates and Tariff
Colorado Natural Gas, Inc. · Tariff — Regulated utility; residential and commercial rate classes. (accessed 2026-08-20)
- Utility Providers
Colorado Public Utilities Commission · State Regulator Inventory — PUC names Colorado Natural Gas, Inc. (Gas). (accessed 2026-08-20)