Solarcity is in every market now, utiltiy thru residential and everything in between. However, distributed solar+storage is the real prize here. It will beat utility level on retail pricing in the mid to long run going forward. Utiltiy level is the short term. Dealing with grid services is really the true strategy out of all of this. Utilities will ultimately procure a vast majority if not all of infrastructure-as-service in scaling levels, and accelerating at that, over the next fews year and in perpetuity at that...
utiltiy scale solar and all other fossil fuel plants will cost more as well as take much longer to build out over the next few years/decades. They will be the minority investment soon. The "alternative" procurement.
most people forget, it's the RETAIL price of electricity that matters most, not the whole sale. What is the delivered energy cost to consumers.
You know I'm not a big fan of utility solar. Certainly I want SolarCity to stay focused where the margins are biggest, which for now is residential.
That said, there are interesting opportunity with utilities that could be quite compelling. Consider the Kaua'i dispatchable solar facility. This will have over 3 hours of storage per unit of solar, 52 MWh to 17 MW solar. While this is a good deal in its own right, I do think there is an additional advantage for SolarCity. Specifically, by operating a solar peak power plant, SolarCity should be able to argue that the island grid can handle even greater penetration of rooftop solar. So if they can open up this market for more rooftop, this gives them a critical opportunity with residents. So there is a policy gain here.
Consider now operation in another service area for a utility that cries out to it PUC that they cannot handle a high penetration of rooftop solar. So the utility engages in regulatory obstruction. SolarCity may counter by building out a solar peaking facility that is capable of countering any intermittency that SolarCity rooftop customers may dish out. This would immediately undermine the utility's contention and shift the terms of negotiation. The question should be how much battery capacity does SolarCity need to offer to backup rooftop solar. Once this is nailed down, SolarCity can install it both behind the meter and in solar peaking facilities.
Furthermore if this does not satisfy the utility, SolarCity has the opportunity to be an independent power provider with it solar peaking facility and compete head to head with utility owned peaking facilities. Note that the economics are potentially so good, that it can reduce utility own assets to stranded assets. SolarCity can do economic damage to a utility that is unwilling to negotiate in good faith. So the utility will simply have to stop making a baseless argument about peak capacity required to accomodate additional rooftop solar, or SolarCity could create a glut of peak capacity and force recognition.
So I'd be surprised if SolarCity needs to force the issue, but in any case dispatchable solar is a huge bargaining chip for SolarCity. Additionally, SolarCity can offer to place Powerpacks within a substation to stabilize the substation service area. This too can be used to negotiate for favorable rooftop solar policies.
With all these plays, the ability to aggregate all SolarCity assets for good of the utility make the negotiating leverage even stronger. The virtual link of all solar and storage under SolarCity's control is very powerful.