I have good news and bad news.
As utilities halted service to more than 2 million people this week, lines formed at hardware stores selling portable generators, while many hospitals and businesses fired up their own. The prospect of emissions belching from untold numbers of the machines, some powered by diesel and gasoline as well as propane and natural gas, was troubling in a state already burdened with some of the nation’s worst air quality.
“It is a major concern,” said Dr. Laki Tisopulos, executive officer of the Ventura County Air Pollution Control District. “Imagine if you are in a large metropolitan area like Los Angeles or the (San Francisco) Bay Area and you have hundreds or thousands of these engines kicking in. All of a sudden you have many localized sources of pollution that are spewing carcinogens right where we breathe. It can be next door to a school, a hospital.”
Memorable line from today's San Francisco newspaper: the weekend's wild blazes have 'intensified fears that some parts of California were becoming too dangerous to inhabit.' https://t.co/MgvcHy8afA
— Bill McKibben (@billmckibben) October 28, 2019
On the other hand, the situation is jumpstarting efforts to create “island able” micrograms, an important development for adoption of renewable energy and creating a more sustainable grid.
Pacific Gas & Electric (PG&E) may speed development of 40 microgrids to help customers maintain electricity when wildfire threats force it to deenergize portions of its grid.
The utility described its plans Friday in a four-hour emergency meeting called by the California Public Utilities Commission (CPUC) in response to the October 9-12 shutoffs to 2 million customers (738,000 accounts).
“There is a definite need to move toward some form of microgrid sectionalization,” PG&E CEO William Johnson told the commission.
On windy days California utilities have been undertaking public safety power shutoffs (PSPS) — intentional electricity shutoffs — because several wildfires in the state have been linked to their equipment.
Customers have expressed anger in the press and at the commission meeting over the shutoff. San Jose is considering exiting from PG&E’s service to run its own utility that would focus on microgrids.
During Friday’s hearing, Sumeet Singh, vice president of PG&E’s Community Wildfire Safety Program, described plans to accelerate development of what the utility calls “resilience zones,” areas of the grid configured to act as microgrids with temporary, mobile generation. Eventually the utility may develop them into permanent microgrids, according to PG&E’s 2018 wildfire mitigation plan.
One zone is already operating in Angwin, a town in Napa County. The project taps into cogeneration at Pacific Union College and provides power for a fire station, gas station, apartment building and a plaza.
The utility had planned to develop 40 or more of the microgrid configurations over three years. “But we know we need to do better and we are in the process of re-evaluating our plans to identify what we can get done and how quickly we can get some of these things done in a safe manner.”
Singh said that the utility is prioritizing microgrids for sites that are susceptible to ignition and wildfire, experience high winds, and offer limited egress for the population.
Continue reading “California Fire Blackouts: Good News and Bad News”



