Tag Archives: Demand Charges

California solar plus storage shows consistent installs, residential growth

By John Weaver, pv magazine

The California Solar & Storage Association (CALSSA) has collected and shared data on California’s behind the meter solar+storage activity in the first half of 2019, with data that goes back to the beginning of 2016.

The data suggests that within the three main investor owned utilities – San Diego Gas & Electric, Southern California Edison and Pacific Gas & Electric – commercial interconnections are running slightly behind the 2018 numbers in terms of projects interconnected. However, residential systems seem to be picking up a bit. 

One chart that gives a bit of indigestion is the time for approval for stand alone and solar+storage installations – if only because of the high variance, but also because quite a few larger projects take more than a year to get approved. The projects are divided into residential, commercial, education and industrial with time frames ranging roughly from 30 to 60 days for residential, to two years for industrial systems. Adding solar power to a storage installation seems to speed up the amount of time for a residential installation, however, it slows a commercial installation.

In Pacific Gas & Electric territory 20% of residential energy storage systems are stand alone, while in the other territories solar is coupled with storage 99-100% of time. Commercial installations had an inverse relationship though – with only 40% of storage projects coupled with solar power, suggesting the market is being driven by other factors like demand charges.

Read full article from pv magazine