One of the most common questions we get is: can our grid support all this electrification? The answer is yes!
California’s grid is primed to support the transition of buildings from using gas to employing clean electricity. In fact, these new electric loads can put downward pressure on utility bills for all Californians.
- Smoothing out demand throughout the year
- Shifting day-to-day demand away from peak hours
- Lowering electricity costs by fully using existing infrastructure
We cover each of these points in more depth below.
Smoothing out demand throughout the year
Our grid is built to provide enough capacity for our peak demand, which is driven by running AC on hot summer days.
Shifting day-to-day demand away from peak hours
One of the most exciting aspects of smart electric appliances like heat pump water heaters is that they can automatically turn on when electricity is plentiful and cheap, and turn off when it's expensive at peak demand.
Heat pump water heaters can store hot water for 12 hours or more, meaning they can run at midday, provide plenty of hot water for a family's needs in the evening during peak demand, and then run again in the middle of the night.
The same principle applies to charging EVs, and even somewhat to heat pump furnaces.
This type of load shifting is called demand response, and it's a key part of our strategy for creating a clean, reliable grid.
Lowering electricity costs by fully using existing infrastructure
Our electricity rates are set based on the costs of generating and delivering electricity to meet the current demand. By increasing demand without needing new infrastructure to generate more electricity, our rates will get lower over time.
Our electric costs in California have gotten more expensive mainly due to climate change fueled wildfires, not due to home electrification.
According to this study published by NRDC, by spreading utilities’ grid infrastructure costs over broader demand for electricity through building and transportation electrification, the average customer's bill in 2030 will be 16% lower than the "business-as-usual" scenario.
For more on these topics, see this this terrific post from electrification expert Dave Intner at Southern California Edison, which links to a video from the California Energy Commission.