The problem with the energy storage ideas, whether it is Tesla or SunRun, is that the cost of the storage capacity is so astronomically high as to be ludicrous for homeowners. It costs more to store a Kwh than to produce it. Sometimes as much as double.
If one looks at the long run, the net cost of producing and then storing one's own electricity so you can go off the grid completely is beyond reason. the cost would be easily between 200% and 300% of simply staying on the grid ... or using the "net metering" system.
SunRun is going back into Nevada. But, it just shows that the entire solar sector is economically unfeasible without massive Government subsidies.