But roof PV makes the grid more resilient, requires less grid, and the owners more independent. A huge portion of consumer electricity could be served with rooftop. It should scale with hot sunny days for A/C surges. It may be key to not overloading the grid with true mass market BEV adoption.

And the article seems to miss that wind is still beating solar from the LCOE charts I've seen. They keep making the towers taller and taller for better economies of scale.

In Europe, roof PV is actually making the grid worse off when residential areas become over-producers. The capacity is not available to move the peak solar power away from residential areas or between residential areas. The grid is apparently designed for top down generation.

I don't think overproduction will be as big an issue once BEVs and cheaper home storage (sodium ion or other means) hit the mainstream.

Reverse metering is basically a shadow subsidy.

And I'm not arguing that the grid doesn't need to be adapted or needs work, but if we have a lot of home generation, then we don't need to worry as much about increasing overall grid capacity to handle BEV home charging.

Do residential peaks coincide with A/C use (daytime, hot weather)? At these times, do you know what portion of energy use by ducted A/C might be covered by a 5-10kW home system?

Our council is currently promoting group buying discounts for solar and/or battery systems, and the state government had been running solar installation rebates/credits for several years.