Mont. Code Ann. » TITLE 69. PUBLIC UTILITIES AND CARRIERS · CHAPTER 3. REGULATION OF UTILITIES · Part 3. Ratemaking Procedures
Montana Code Annotated

Mont. Code Ann. § 69-3-306 (2026)

Classification Of Service

✓ current as of May 2026
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  1. MCA Contents
  2. TITLE 69
  3. CHAPTER 3
  4. Part 3
  5. 69-3-306 Classification of service

TITLE 69. PUBLIC UTILITIES AND CARRIERS

CHAPTER 3. REGULATION OF UTILITIES

Part 3. Ratemaking Procedures

Classification Of Service

69-3-306. Classification of service. (1) Except as provided in subsection (3), the commission may prescribe classifications of the service of all public utilities. Classifications may take into account the quantity used, the time when used, and any other reasonable consideration. A public utility is required to conform its schedule of rates, tolls, and charges to the classifications.

(2) The commission shall prescribe a declining block rate structure or a structure appropriate to customer-generators for electric service, when cost-justified.

(3) Classifications of service for customer-generators must be determined in accordance with Title 69, chapter 8, part 6.

History: En. Sec. 13, Ch. 52, L. 1913; re-en. Sec. 3893, R.C.M. 1921; re-en. Sec. 3893, R.C.M. 1935; R.C.M. 1947, 70-115; amd. Sec. 1, Ch. 517, L. 1985; amd. Sec. 4, Ch. 248, L. 2017.

Notes of Decisions
Cited in 2 cases (1 in the last 5 years), 2012–2021 · leading case: Williamson v. Montana Pub. Serv. Comm'n & Nw. Energy, 2012 MT 32 (Mont. 2012).
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Williamson v. Montana Pub. Serv. Comm'n & Nw. Energy, 2012 MT 32 (Mont. 2012). · cites it 5× “¶4 Under §69-3-306(1), MCA, the PSC has authority to prescribe “classifications of the service of all public utilities.”
Gruba v. PSC, 2021 MT 186N (Mont. 2021). · cites it 6× “Pursuant to § 69-3-306(1), MCA, the Commission has authority to prescribe “classifications of the service of all public utilities.”
— Mont. Code Ann. § 69-3-306(1) — 2 cases
Williamson v. Montana Pub. Serv. Comm'n & Nw. Energy, 2012 MT 32 (Mont. 2012). “¶4 Under §69-3-306(1), MCA, the PSC has authority to prescribe “classifications of the service of all public utilities.”
Gruba v. PSC, 2021 MT 186N (Mont. 2021). “Pursuant to § 69-3-306(1), MCA, the Commission has authority to prescribe “classifications of the service of all public utilities.”
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