Alaska RCA Net Metering Standards: A Guide to 3 AAC 50 Regulations

Key Takeaways

• Consumer generation systems are limited to a total nameplate capacity of 25 kilowatts per premises.
• Excess energy exported to the grid is credited at the utility's non-firm power rate.
• Dollar amounts credited to a net metering consumer do not expire or revert to the utility.
• Utilities may cap total net metering capacity at 1.5 percent of their average retail demand.

What are Alaska's RCA Net Metering Standards?

Alaska's net metering standards are established by the Regulatory Commission of Alaska (RCA) under 3 AAC 50.900 through 3 AAC 50.949. These regulations govern how customer-owned generation systems, such as solar, interconnect with the grid and how excess energy is credited. For eligible systems, the rules specify a maximum capacity of 25 kilowatts per consumer premises (August 2026).

We reviewed the Alaska Administrative Code 3 AAC 50.900 on 23 August 2026 to verify these provisions.

Who is eligible for net metering in Alaska?

To qualify for net metering under RCA regulations, your generation system must meet specific criteria:

• Capacity Limit: The system must have a total nameplate capacity of no more than 25 kilowatts per consumer premises (August 2026). Systems larger than this limit are subject to different regulations, specifically handled as standard PURPA qualifying facilities under 3 AAC 50.750.
• Interconnection: Your system must be physically interconnected to the consumer's side of the meter from which the electric utility provides electric service.
• Eligible Resources: The regulations permit various renewable energy sources. These include "solar photovoltaic and solar thermal energy", "wind energy", "biomass energy", "hydroelectric energy", and "geothermal energy".

It is important to note that not all electric utilities are required to offer net metering. Utilities with total retail sales of "less than 5,000,000 kilowatt-hours during the previous calendar year" are exempt from these mandatory net metering rules. If you are considering a solar installation, you should confirm your utility's status.

How are excess solar credits calculated and applied?

When your net metering system generates more electricity than you consume in a monthly billing period, the utility credits your account. The utility calculates this credit by multiplying the net kilowatt-hours exported by the "non-firm power rate contained in the electric utility's currently effective tariff" (August 2026).

A key benefit for consumers is that these dollar amounts credited "shall be used to reduce dollar amounts owed by the consumer in subsequent monthly billing periods; and do not expire or otherwise revert to the electric utility" (August 2026). This means any accumulated credits remain on your account until used.

What are the utility's obligations and limitations?

Alaska's net metering regulations also define obligations and limitations for electric utilities:

• Aggregate Capacity Cap: A utility may refuse new net metering applications if the total program nameplate capacity exceeds "1.5 percent of the electric utility's average retail demand stated in the electric utility's tariff" (August 2026).
• Annual Reporting: Utilities must file a tariff advice letter "on or before March 1 of each year" (August 2026). This letter must state the number of kilowatts equivalent to 1.5 percent of their average retail demand.
• Grandfathering: If a decrease in average retail demand causes the total net metering capacity to exceed the 1.5 percent cap, the utility "shall allow existing net metering consumers to continue participating in the net metering program" (August 2026). This protects current participants.
• Non-Discriminatory Fees: Utilities "may not charge a consumer participating in the net metering program any additional fee for standby, capacity, interconnection, or other net metering expense unless approved by the commission" (August 2026). This prevents utilities from imposing extra costs solely on net metering customers.
• Metering Equipment Costs: If additional metering equipment is required for net metering, the utility "is responsible for all costs related to the purchase, installation, and maintenance of the additional metering equipment; and may not assess a recurring charge" (August 2026).
• External Disconnect: While utilities generally cover metering costs, a consumer may be required to pay for an external disconnect switch if it is located "within five feet of the consumer's meter base" or at the consumer's main service panel (August 2026).

Navigating Alaska's Net Metering for Your Solar Project

Understanding these regulations is crucial for planning a solar installation in Alaska. The 25 kilowatt capacity limit for eligible systems means that larger commercial or industrial projects will fall under different regulatory frameworks. For residential and small commercial systems, the non-expiring credits and utility responsibility for metering costs provide clear benefits.

Before proceeding, verify your specific utility's net metering status, especially if it is a smaller provider that may be exempt from mandatory participation. You can also explore related regulatory guides for other regions to understand commonalities and differences in net metering policies:

• Washington UTC Net Metering Rules
• Oregon PUC Solar Interconnection Guide
• Idaho Power Schedule 84 Commercial On-Site Generation

Consider using a solar sizing tool to estimate your energy needs and system size, ensuring it aligns with the 25 kilowatt limit for net metering eligibility.