Our Rates and Tariffs

September 14, 2017: Hydro One and Avista file applications for regulatory approval of merger. Learn more about these filings.

How rates are set

Your payments help us continue to provide safe, reliable energy. Find information about how your rates are set, what your rate dollars pay for, and how we are maintaining our system to continue to provide you with safe, reliable energy.

About Rates

About Rates

Read helpful FAQs, watch a video about what drives rates changes and see how we compare to national average.

Stay informed

Washington-Electric Resources

Washington - Electric

State-specific documents about rate adjustments and pricing.

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Washington-Natural Gas Resources

Washington - Natural Gas

State-specific documents about rate adjustments and pricing.

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Washington

Washington - Rate Requests

State-specific information about Washington rate requests.

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Idaho-Electric Resources

Idaho - Electric

State-specific documents about rate adjustments and pricing.

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Idaho-Natural Gas Resources

Idaho - Natural Gas

State-specific documents about rate adjustments and pricing.

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Idaho

Idaho - Rate Requests

State-specific information about Idaho rate requests.

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Oregon-Natural Gas Resources

Oregon - Natural Gas

State-specific documents about rate adjustments and pricing.

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Oregon

Oregon - Rate Requests

State-specific information about Oregon rate requests.

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