From the Summary: "Net metering is a policy that allows electricity customers with their own generation capacity to be financially compensated for the energy they produce. Net metering is widely regarded as having an important role in deployment of distributed generation (DG), especially solar energy. State and local governments have authority to establish net metering policies, and some have done so for many years. Congress took action to encourage net metering in the Energy Policy Act of 2005 (EPACT05), and the policy now exists, in some form, in 45 states. Recent state net metering policy modifications, and potential effects on solar energy deployment, may be relevant to congressional discussions regarding the role of renewable energy sources in the nation's electricity system. [...] Some Members of Congress have expressed interest in various aspects of net metering policy since passage of EPACT05. Legislation has sought to limit revisions that states can make to net metering policies; expand access to net metering for different types of electricity generation; and estimate costs and benefits associated with net metering, among other topics."
CRS Report for Congress, R46010
Congressional Research Service: https://crsreports.congress.gov/