Net metering is intended to allow customers to generate enough energy for their own use, but not to exceed their own use. Therefore, by state law, excess net metering credits that are more than one year old will expire. Working with your solar installer to make sure your energy consumption is well matched to your solar generation will help prevent losing your credits.
You can use your net metering credits before they expire by either creating a group or adding members to your existing group. Net metering groups share extra credits as they’re generated. Adding members to an existing group is as simple as the group designee notifying GMP of new members and allocations by sending an email to GAC@greenmountainpower.com. Allocation changes will take effect within 30 days and apply to credits generated after that. Changes can be made up to 4 times in a calendar year.