Colorado Revised Statutes

Colo. Rev. Stat. § 40-3-103 (2026)

Utilities to file rate schedules - rules

✓ current as of July 2026

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(1) Under the rules prescribed by the commission, each public utility shall file with the commission, within the time and in the form designated by the commission, and shall print and keep open to public inspection, schedules showing all rates, tolls, rentals, charges, and classifications collected or enforced, or to be collected and enforced, together with all rules, regulations, contracts, privileges, and facilities that in any manner affect or relate to rates, tolls, rentals, classifications, or service.

(2) (a) On or after January 1, 2018, on a schedule determined by the commission, each investor-owned electric utility shall file for the commission's review a comprehensive billing format that the investor-owned electric utility has developed for its monthly billing of customers. The comprehensive billing format must include the following components of a customer's monthly bill:

(I) A line-item representation of all monthly charges and credits applied to the customer and an indication of whether the charges have changed from the prior month as a result of changes in fuel costs;

(II) For months in which tiered rates are applied, a breakdown of the tiered rates and the amount of usage to which each rate was applied for the month;

(III) The daily average cost for the current month compared to the same month in the previous calendar year;

(IV) A glossary of terms used by the utility in the monthly bill;

(V) A description of each of the monthly fees that the utility may charge the customer;

(VI) The usage for the current month and each of the previous twelve months, as shown in a bar graph or similar visual format; and

(VII) For customers to which demand rates apply, a listing of the applicable demand charge, the peak demand during the billing period, and, provided the utility can reasonably ascertain such data, the date and time at which the peak demand occurred.

(b) Each investor-owned electric utility shall provide its customers, on a biannual basis, with either an onsert or an insert that indicates, as a percentage, each fuel source used in power generation and purchased for that utility, including renewable energy sources, natural gas, and coal.

(c) (I) The commission shall review a filing submitted pursuant to subsection (2)(a) of this section within thirty days after the filing. If the commission determines that the filing does not meet the comprehensive billing format requirements set forth in subsection (2)(a) of this section, the commission may require the investor-owned electric utility to resubmit a comprehensive billing format in compliance with the requirements. The commission shall notify the investor-owned electric utility in writing of the reasons for the deficiency, and the investor- owned electric utility shall resubmit a comprehensive billing format in compliance with the requirements of subsection (2)(a) of this section within sixty days after the date of the commission's notice of deficiency; except that the commission may, upon request, extend the deadline.

(II) After the commission has approved a comprehensive billing format submitted by an investor-owned electric utility pursuant to subsection (2)(a) of this section, the investor-owned electric utility need not resubmit a comprehensive billing format unless the investor-owned electric utility makes changes to its comprehensive billing format.

Source: L. 13: p. 469, § 15. C.L. § 2926. CSA: C. 137, § 16. CRS 53: § 115-3-3. C.R.S. 1963: § 115-3-3. L. 69: p. 964, § 75. L. 91: Entire section amended, p. 2427, § 1, effective June 8. L. 2006: Entire section amended, p. 1103, § 26, effective August 7. L. 2007: Entire section amended, p. 1244, § 1, effective May 24. L. 2017: Entire section amended, (SB 17-105), ch. 224, p. 862, § 1, effective May 22.

Notes of Decisions

Cited in 5 cases, 1974–2017 · leading case: U S West Commc'ns, Inc. v. City of Longmont, 948 P.2d 509 (Colo. 1997).

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U S West Commc'ns, Inc. v. City of Longmont, 948 P.2d 509 (Colo. 1997). · cites it 6× “Under section 40-3-103, 11 C.R.S. (1997), a utility must file with the P.”

AviComm, Inc. v. Colorado Pub. Utils. Comm'n, 955 P.2d 1023 (Colo. 1998). · cites it 2× “See § 40-3-103, 17 C.R.S. (1993); U S West Communications, Inc.”

City of Loveland v. Pub. Utils. Comm'n, 580 P.2d 381 (Colo. 1978). “On its own motion the PUC may suspend a proposed tariff, hold a hearing on the proposal and, if necessary, cancel an unreasonable proposed rate.”

People v. Fulmer, 524 P.2d 606 (Colo. 1974). · cites it 2× “The basis for relief of all three motions was that section 40-3-103 of the Colorado Criminal Code, which became effective July 1, 1972, reclassified second-degree murder as a class two felony and under section 40-1-105 of the code the penalty was reduced to not less than ten nor…”

Dev. Recovery Co., LLC v. Pub. Serv. Co. of Colorado, 2017 COA 86 (Colo. Ct. App. 2017). · cites it 2× “Thus, Xcel is responsible for estimating the cost of materials, labor, and rights-of-way, as well as related costs such 2 Public utilities are required to maintain open schedules showing rates and charges, along with factors affecting rates or service.”

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