[yholio]

Rooftop solar was always form of green subsidy: you get the same flat price for energy you dump into the network as the price the utility charges you. But what you put in at random times of your own choosing is much, much less valuable than a guaranteed power feed at any hour or season. At times it might have negative value, the power you put in costs the utility money. That simply cannot scale.

The only way I can see the two prices equal is if you provide power in the network on request from the utility, at specific time intervals from your own storage. But then you wouldn't need a power utility.