Renewable Energy Resilience

Nanogrids, Microgrids and Virtual Power Plants

Expert on new energy business models such as nanogrids, microgrids and virtual power plants, covering cutting edge energy and environmental issues for over 25 years.

New York County Shows the Way on Community Choice Microgrids

I tried to help develop a microgrid in the small rural community of Point Reyes Station back in 2008. I was an independent writer and community organizer at the time, and Marin County was set to launch California’s first “community choice aggregation” (CCA) program, which empowered local governments to contract for power supplies, while the incumbent investor-owned utility still maintained the poles and wires as well as billing.

Due to some last minute snafus, the project, which would have incorporated existing solar, wind and biogas power generation, did not get funded. A study I conducted also concluded that the CCA market structure alone could not support a full microgrid implementation since it did not have the authority itself to manage the power grid itself, enabling safe islanding and requiring an interconnection agreement. As I reported in the San Francisco Chronicle, a small solar PV and battery nanogrid was installed at the site – a community center – but it was quite primitive and not rolled into the CCA, which now goes by the moniker of Marin Clean Energy.

Flash forward to the present. Westchester County in New York is moving forward with a unique CCA program that breaks new ground on several fronts, including an attempt to create a community-based energy program incorporating several features beyond the typical CCA menu of wholesale power purchases and local distributed generation:

·         The CCA is moving forward without state legislation specifically authorizing such local government power purchasing. Legislation authorizing just Westchester County to move forward with a CCA was vetoed, but then the New York Public Service Commission authorized the CCA as a pilot program.

·         As a result of this unique approach, Sustainable Westchester, Inc., which counts Joule Assets as among its behind-the-scene prime movers, has had to work to pass local legislation in each municipality, to enlist local government participants.

·         The CCA will not only look to new DG models, such as community solar, but a novel community-based behavioral demand response (DR) program leveraging tight social networks that already exist in the region.

·         Westchester County also boasted more microgrid proposals (14) responding to the New York Prize competition than any other county in the state involving companies as diverse as Booz Allen Hamilton, Siemens, Power Analytics, Green Energy Corporation, Hitachi, NRG Energy, and others.

If we zero in on microgrids, there may be some hope for a tighter linkage between a CCA and microgrids, thanks to Westchester County.  For one, New York is a “home rule” state, which means local governments, some of which date back to the 17th century, have more clout and legal authority than in other states. (Though California is also a home rule state, the concept is much more entrenched culturally in New York.) For two, New York’s “Reforming the Energy Vision” (REV) process is opening up new business models that align with both DR and microgrids. For three, Westchester County is situated in a major congestion zone since it sits between the giant loads of the Big Apple and wholesale power supplies located in upstate New York. The integration of both more aggregated DG and DR make inherent sense from a systems planning perspective.

“Our vision is for Sustainable Westchester is to become a municipal service aggregator entity for a wide range of DER services, including microgrids,” said Glenn Weinberg, director of smart community choice programs for Joule Assets. “We see the need for a centralized entity to manage these microgrids on a regional basis, as many may require services whose procurement could benefit from economies of scale.” The first important step for the CCA is a Request For Proposals for power suppliers which was just released. 

©2016 Peter Asmus. Photo credit: David Clites. Website by: IMManagers.com