"They're" paying out...? Not quite. Those costs are being passed onto ratepayers. Wanna know who underwrote/paid for those pipelines and infrastructure in the first place? The ratepayers. PG&E and other large utilities are basically allowed to double-dip by the CPUC on the regular.
Why not? Our home's running 12KW in panels, and the entire package we got, which included replacing the entire HVAC system, additional insulation, and an 8KW back-up gennie, was $90K out the door. Not to mention the new switch, breaker boxes, panels and subpanels. Spend $100K and you can certainly increase the kilowatt capability of the panels.
Your bigger problem, honestly, is in getting PG&E to sign off on the build-out. They really like to take their time and right now they're seriously fighting all alternative energy efforts that aren't paying out for their shareholders. This is why I've come to the conclusion that utilities should not be "for profit" entities.