California’s net energy metering (NEM) program will end when a utility reaches its 5% cap or on July 1, 2017, whichever occurs first. The 5% cap translates into 2,409 MW of NEM-interconnected systems for PG&E, 2,240 MW for SCE, and 607 MW for SDG&E.

Here is a graph of the cumulative number of NEM-interconnected systems reported by the utilities over the past six months and an extrapolation of their data through June 2017.

If future interconnection rates reflect past interconnection rates, then SDG&E and PG&E will reach their 5% caps around August 2016 and May 2017, respectively, and SCE’s NEM program will terminate on July 1, 2017 with about 0.73% or 329 MW capacity unused.