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Natural Gas Tariffs

* Please note that these tariffs are subject to change. We make every attempt possible to keep these tariffs current, but the tariffs listed below may not be the currently effective tariff. If you have a question about a tariff listed below, please call the South Dakota Public Utilities Commission at 605-773-3201 and we can verify whether that tariff is correct.

MidAmerican Energy     Montana-Dakota Utilities
NorthWestern Energy     South Dakota Intrastate Pipeline

MidAmerican Energy Company

Title Sheet

Section 1

Section 2

Section 3

  • Small Volume Service (Sheet Nos. 1, 2, 3)
  • Medium Volume Service (Sheet Nos. 4, 5, 6)
  • Large Volume Service (Sheet Nos. 7, 8, 9, 10, 11, 12, 13, 14, 15)
  • Small Volume Interruptible Gas Service (Sheet Nos. 16, 17, 18, 19, 20, 21)
  • Large Volume Interruptible Gas Service (Sheet Nos. 22, 23, 24, 25, 26, 27)
  • Small Seasonal Gas Service (Sheet Nos. 28, 29, 30)
  • Large Seasonal Gas Service (Sheet Nos. 31, 32, 33)
  • Competitive Pricing Sales or Transportation Service (Sheet Nos. 34, 35)
  • Monthly Metered Transportation Service (Sheet Nos. 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
  • System Gas Service (Sheet No. 50)
  • Transportation of Customer-Owned Gas (Sheet Nos. 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
  • Cost of Purchased Gas Adjustment (Sheet Nos. 68, 69, 70)
  • BTU Adjustment Clause (Sheet No. 71)
  • Energy Efficiency Cost Recovery (Sheet No. 72)
  • Incremental Expansion Surcharge Adjustment (Sheet No. 73)
  • Gas Tax Adjustment Clause (Sheet No. 74)
  • Excess Facilities (Sheet Nos. 75, 76)
  • Daily Balancing of Customer-Owned Volumes (Sheet Nos. 77, 78, 79, 80, 81, 82, 83)
  • Transportation Optional Balancing Services (Sheet Nos. 84, 85, 86, 87, 88)
  • Pipeline Demand Rider (Sheet Nos. 89, 90)
  • Weekend Service Rider (Sheet No. 91)
  • Section 4

    Section 5

    Section 6

    Cancelled Tariff Sheets (Not available to the public)

    Montana-Dakota Utilities

    Section 1

    Section 2

    Section 3

  • Rate Summary (Sheet No. 1)
  • Residential Gas Rate (Sheet No. 2)
  • Reserved for Future Use (Sheet Nos. 3, 4)
  • Reserved for Future Use (Sheet Nos. 5, 5.1)
  • Reserved for Future Use (Sheet No. 6)
  • Reserved for Future Use - Sheet Nos. 7, 7.1)
  • Reserved for Future Use (Sheet Nos. 8, 9, 10)
  • Firm General Gas Service Rate 70 (Sheet Nos. 11, 11.1)
  • Small Interruptible General Gas Service Rate 71 (Sheet Nos. 12, 12.1, 12.2)
  • Optional Seasonal General Gas Service Rate 72 (Sheet Nos. 13, 13.1)
  • Reserved for Future Use (Sheet Nos.14, 15, 16)
  • Reserved for Future Use (Sheet Nos. 17, 17.1)
  • Reserved for Future Use (Sheet Nos. 18, 19, 20, 21)
  • Transportation Service Rates 81 and 82 (Sheet Nos. 22. 22.1, 22.2, 22.3, 22.4, 22.5, 22.6, 22.7, 22.8)
  • Reserved for Future Use (Sheet Nos. 23, 24, 25)
  • Large Interruptible General Gas Service Rate 85 (Sheet Nos. 26, 26.1, 26.2)
  • Reserved for Future Use (Sheet Nos. 27, 27.1, 27.2, 27.3, 27.4, 27.5, 27.6, 27.7)
  • Distibution Delivery Stabilization Mechanism - Rate 87 (Sheet Nos. 28, 28.1)
  • Purchased Gas Cost Adjustment Rate 88 (Sheet Nos. 29, 29.1, 29.2, 29.3, 29.4, 29.5)
  • Reserved for Future Use (Sheet Nos. 30, 30.1, 30.2, 30.3, 30.4, 30.5)
  • Conservation Program Tracking Mechanism Rate 90 (Sheet No. 31)
  • Section 4

    Section 5

  • General Provisions Rate 100 (Sheet Nos. 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20)
  • Reserved for Future Use (Sheet No. 2)
  • Reserved for Future Use (Sheet No. 3)
  • Reserved for Future Use (Sheet Nos. 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
  • Interruptible Gas Service Extension Policy Rate 119 (Sheet Nos. 19, 19.1)
  • Firm Gas Service Extension Policy Rate 120 - Sheet Nos. 20, 20.1, 20.2, 20.3, 20.4, 20.5)
  • Reserved for Future Use (Sheet Nos. 21, 22, 23)
  • New Installation, Replacement, Relocation and Repair of Gas Service Lines Rate 124 (Sheet No. 24)
  • Reserved for Future Use - Sheet Nos. 25, 26, 27, 28, 29, 30, 31, 32, 33)
  • Rules and Policies for Implementing Mast Metering Restrictions Rate 134 (Sheet Nos. 34, 34.1, 34.2, 24.3)
  • Section 6

    Cancelled Tariff Sheets (Not available to the public)

    NorthWestern Energy (NorthWestern Public Service Co.)

    Title Sheet

    Section 1

    Section 2

    Section 3

  • Residential Gas Service Firm Sales Rate No. 81 (Sheet No. 1)
  • NNG Farm Tap Customers Firm Sales Rate No. 81M (Sheet No. 1.1)
  • Sheet Left Intentionally Blank (Sheet No. 1.2)
  • General Gas Service Firm Sales Rate No. 82 (Sheet No. 2)
  • Sheet Left Intentionally Blank (Sheet Nos. 2.1, 2.2, 2.3)
  • Commercial and Industrial Firm Sales Rate No. 84 (Sheet Nos. 3.1, 3.2, 3.3)
  • Sheet Left Intentionally Blank (Sheet No. 3.4)
  • Commercial and Industrial Interruptible Sales Service Rate No. 85 (Sheet. Nos. 4.1, 4.2)
  • Sheet Left Intentionally Blank (Sheet No. 4.3)
  • Commercial and Industrial Interruptible Sales Service Rate No. 85FAM (Sheet No. 4.4)
  • Sheet Left Intentionally Blank (Sheet No. 5)
  • Commercial and Industrial Contract Sales Service Rate No. 86 (Sheet Nos. 5.1, 5.2, 5.3, 5.4, 5.5)
  • Gas Transportation Service Rate 87 (Sheet Nos. 6.1, 6.2, 6.3, 6.3A, 6.4, 6.4A, 6.5, 6.5A, 6.6, 6.7, 6.8, 6.9, 6.10, 6.11, 6.12, 6.13)
  • Sheet Intentionally Left Blank (Sheet No. 7)
  • Extended Service Rider Rate No. ESR (Sheet No. 8)
  • Adjustment Clause (Sheet Nos. 9, 9a, 9b)
  • Sheet Intentionally Left Blank (Sheet No. 9c)
  • Tax Adjustment Clause (Sheet No. 10)
  • Energy Efficiency Adjustment (Sheet No. 11)
  • Sheet Intentionally Left Blank (Sheet No. 11a)
  • BTU Adjustment Clause (Sheet Nos. 12, 12a)
  • Temporary Retention Service Rider Rate No. TRS (Sheet No. 13.1)
  • Section 4

    Section 5

    Section 6

    Cancelled Tariff Sheets (Not available to the public)

    South Dakota Intrastate Pipeline Co.