Community solar continues to attract a lot of attention as a means to expand participation in distributed solar energy generation.Massachusetts New Metering
In the past year, Massachusetts has implemented a statewide neighborhood net metering program approved in 2008 legislation.
- Under the final rules, all net metered systems, including neighborhood net metered systems, may over-generate relative to on-site load.
- Regular net metered customers may either rollover credits in perpetuity or allocate excess generation credits to other customers of the same distribution utility.
- Neighborhood net metered customers must have a minimum of ten residential customers identified for distribution of excess generation credits and all customers served must be within the same municipality, ISO-New England's load zone, and service territory of one distribution utility.
- Regular net metered system credits are based on a fully bundled retail rate, excluding customer charges and a public goods charge.
- Neighborhood net metered system credits are based on the fully bundled rate minus the distribution portion and also exclude the customer charge and public goods charge.
- Excess generation credits are allocated as a dollar amount and are based on the rate class for which a host customer takes service.
A number of states continue to discuss community net metering programs in various contexts including California, Colorado, New Jersey and Washington.
Given the potential promise community solar programs offer in expanding solar markets and the intersection of community solar policies with net metering, IREC anticipates being involved in these states as they move forward with implementation. As part of those efforts, IREC has begun development of a community net metering model designed to incorporate the best practices of net metering within the larger framework of community solar.
SOURCE: IREC 2009 Annual Report

Brian Hurd is a vocational instructor at the