Deployment of distributed solar PV generation, principally behind-the-meter solar PV systems on residential and commercial rooftops, is accelerating across the U.S. More than 1.5 million PV systems were interconnected to the electric grid by September 2017, up from approximately 475,000 systems installed near the final quarter of 2013. Of PV systems currently installed nationally, 64% have been interconnected in the western states. In recent years, the number of interconnection requests have grown substantially in the most robust solar markets in the West, such as California, Arizona, Colorado, Nevada, and Utah.
In spite of optimistic projections for distributed solar photovoltaic (PV) generation in the Western U.S., barriers to solar PV deployment exist and their mitigation or removal could facilitate deployment. The Western Interstate Energy Board (WIEB), along with the National Renewable Energy Laboratory (NREL) and the Lawrence Berkeley National Laboratory (LBNL), will conduct research to facilitate mitigation/removal of barriers to distributed solar PV generation.
Barriers to solar PV deployment, as noted above, do exist. These barriers fall into three broad categories:
- lengthy timelines for distributed solar PV interconnection with the grid;
- potential grid reliability concerns; and
- concerns with utility rate design
WIEB and its national laboratory partners will work with Technical Advisory Committees to identify and define perceived barriers to deployment of solar PV; conduct research concerning the perceived barriers; identify and define measures that could mitigate or remove the barriers; and conduct outreach to state policy makers and regulators to facilitate mitigation or removal of the barriers.
Total funding for this work is approximately $2.5 million. The work began in early 2017 and will be conducted over years 2017-2019.
- “Review of Interconnection Practices and Costs in the Western States”: link to report
- This report reviews interconnection rules and practices in western states and across utility jurisdictions. Additionally, it highlights practices that may pose a barrier to deployment and identifies potential best practices for interconnection.
For more information about this project, please contact Richard McAllister at WIEB: firstname.lastname@example.org