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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

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  • Section 4

    Section 5

    Section 6

    Cancelled Tariff Sheets (Not available to the public)

    Montana-Dakota Utilities

    Section 1

    Section 2

    Section 3

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    Section 5

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  • Section 6

    Cancelled Tariff Sheets (Not available to the public)

    NorthWestern Energy (NorthWestern Public Service Co.)

    South Dakota Intrastate Pipeline Co.