Are There Limitations on Solar Installations for Net Metering?

Net Metering Capacity Limits

Net metering capacity limits vary by state and utility company, but common maximums range from 10 kilowatts (kW) to 25 kW. For example, California’s net metering program has a maximum capacity of 5 megawatts (MW) per customer, while New York allows up to 25 kW per customer. Homeowners should check with their utility company to determine their specific net metering capacity limit.

System Size and Orientation Requirements

To qualify for net metering, a solar system must be connected to the grid and designed to operate in sync with the utility company’s grid frequency. Typically, a solar system must be sized to match the average daily energy consumption of the building, typically between 50% to 150% of the building’s average daily energy consumption. Additionally, the solar array must be installed with proper orientation and tilt to maximize energy production. For example, a south-facing solar array with a tilt angle of 30 degrees is suitable for most locations.

Technical Requirements and Inspections

Net metering systems must meet specific technical requirements, including electrical and safety standards. Utility companies may perform inspections to ensure compliance with these standards. For example, a net metering system must have a maximum system voltage of 600 volts, and all electrical connections must be safely and securely made. Homeowners should work with a qualified solar installer to ensure their system meets all technical requirements and passes inspections.