Utility scale battery technologys may change from lithium ion to perhaps sodium ion or just become part of a several thousand acre wind farm or solar PV farm in the form of redox flow batteries that take up a lot of acreage, but can be designed for several hours or several days of energy storage. For instance in Riverside County, CA there is a solar PV farm called the McCoy solar park. It has been vetted as a 10,000 acre site and only one quarter of that site has been built so far. This would be the site where one could replace old panels with newer more efficient panels, add single axis east to west, tracking and a huge redox flow battery to the current acreage and have a site capable of 4GWh of onsite energy storage and anywhere from 16 hours of dispatch generation at 250MWh to 4 hours of 1GWh of dispachable generation. The infrastructure is in place, the upgrading and replacement programs are not being constructed. I call this a total waste of public lands and public trust that these “energy projects” are not being built or operated, (duck curve curtailed) with the public energy service as front and center.