And now, you are confusing the issues also. The point about residential solar is that, when all those A/C units kick in, so does the output of the solar systems. Moreover, that electricity doesn't have to be delivered over the grid. Residential solar has a greater impact than just the generation cost.
This sound like a wishful thinking trying to stretch reality to desired outcome. A/C and power usage in general peaks in later afternoon, at sunset, when PV generation is marginal. E.g. google "Duck Pattern". Residential rooftop doesn't payoff without subsidies even when it is oriented South (before demand peak) and you are talking about reduction it for A/C only. It isn't guaranteed either, any cloudy but still hot weather, and the grid will need to provide the almost same power, and invest into the same infrastructure providing it. Hence demand charges for commercial customers - the same demand charges should apply to residential customers and then it will be clear what needs to be done to save resources.
Utilities have a perverse incentive: since they generally operate both generation and end-user sales, with prices set through a regulatory body, these utility companies actually benefit when the base cost of generation increases. Solar threatens their profit and that's why utilities oppose it.
Solar doesn't threaten their profit, as they will receive their percentage one way or another from ratepayers as you noted. If they will be short of money, they will raise rates. And they have wholesale installations of the same solar that generated more power than residential solar countrywide. What is under threat is ability of non-netmetering ratepayers to get their electricity at fair price, without paying for "free backup" infrastructure and for netmetering subsidies used by somebody else. Backup is not free, pay it from you own pocket. Why should ratepayers pay you $0.13/kWh for solar when at any time they can sign wholesale PPA for $0.04/kWh solar, and it will be provided at exactly the same time? Netmetering was fine and useful start-up tool when there were few customers, now it becomes leaching in high solar insulation states as your fellow ratepayers eventually pay for it.
As for Hawaii, the story is clearly not finished there. Hawaii has some of the the highest electricity costs in the nation, so the opportunity for solar is greatest there.
Finally, the argument initially was about solar in general, not specifically rooftop solar.
Yes, exactly, Hawaii is no-brainer case for solar. But solar at utility scale, not rooftop, and some not so cheap yet energy storage will be needed. So why should ratepayers pay double price for residential rooftop when they can get much cheaper wholesale installation?
As I pointed out above, even if utility-grade solar offer the possibility to provide cheaper electricity than the alternatives, utility companies benefit from the status quo, and that is why solar has had such a small impact on US generation.
If it is financially viable for an oil state to use utility grade solar, it's financially viable for most southern states in the USA.
These are baseless conspiracy theories. How about getting at real numbers and reports? Solar is 1% US electricity generation, but it was above wholesale electricity price until very recently, and is not dispatchable, so what was the point to invest in it? Once it can compete with natural gas prices, it will be able to displace part of natural gas, but as you know, Sun doesn't shine 24h per day, so it will never be 100% without storage, which is expensive so far. Wind has reached 5% generation in the US - and somehow "evil utilities" and "Big Oil conspiracy" didn't prevent it from expanding. Because its cost (around $0.02/kWh in mid US after subsidy) makes more sense, and capacity factor somewhat better than solar. It may change in the future as PV panel prices go down faster than wind turbine prices, but until recently economy was in favor of wind over utility grade solar.
Residential rooftop solar cost is just way above where it makes economic sense, and it will stay significantly more expensive than utility grade solar when PV panel costs will go down. Just because most of its cost is labor.