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How the Metering Works
There are three different interconnection types that customers can choose:
  1. Net-metered system

    Net metering is the most common interconnection type for customer distributed generation for residential and small commercial systems.

    Avista installs a "net meter" on customer's property which will measure the difference between the amount of electricity supplied by Avista and the amount of electricity generated by the customer over the course of a month.

    Net-metering is allowed on systems up to 100 kW. The net-metering agreement is an interconnection agreement between Avista and the Customer.

    Click here for detailed information on net-metered systems.

  2. Interconnect to Avista's electrical system and sell power to Avista under a Public Utility Regulatory Policies Act (PURPA) or non-PURPA Power Sales Agreement (Interconnection is under State Jurisdiction).

    The power is purchased by Avista at a published rate for projects under 5 MW. Above 5 MW there is a rate agreed upon in a negotiated Power Purchase Agreement. Power Purchase Agreements are most commonly used for large systems.

    For more information, visit our Interconnection page.

    For questions, contact Warren Clark.

  3. Interconnect a PURPA or non-PURPA project to Avista and wheel energy across the Avista electrical system and sell power to a third party that has the rights to purchase wholesale energy. (Interconnection is under FERC Jurisdiction).

    The power is not purchased by Avista and the customer pays to wheel or transfer energy across Avista's system. The power is sold at a rate agreed upon in a negotiated Power Purchase Agreement with a third party. Most commonly used for utility-scale installations of generation.

    For more information, visit our Interconnection page.

    For questions, contact Warren Clark.

Net metering:

Net metering credits and the production incentive (from Washington State) are two separate benefits of customer generation.

When Avista calculates your monthly bill under a net metering agreement, you will be charged for the amount of energy you consumed in excess of the energy you generated during that month. For a month that your system generates more energy than you consume, the excess energy will be saved as a net metering credit to your account. The net metering credits will be automatically applied to future energy charges when your consumption exceeds your generation.

For example, if your generation is in excess of your consumption during the summer months, then in the winter months when your generation may not exceed your consumption, any saved net metering credits on your account will be applied to offset your usage.

In Washington, the net metering year runs from May 1 to April 30. Beginning May 1 of each year, unused net metering credits will be reset to zero with no compensation for unused credits. In Idaho, the net metering year runs from January 1 to December 1. Beginning January 1 of each year, unused net metering credits will be reset to zero with no compensation for unused credits.

For more information on the production incentive, visit our incentives page or the Washington State Department of Revenue - Production Incentive page.

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