Give us decent batteries and all will be well. My parents just scrapped their solar set up. Summer days in the Bay of Plenty, New Zealand, provides enough sun to have the charging switch off at about 9am, batteries full. Big Mac Pro, lots of IT gear, coffee machine, vacuum cleaner etc all used normally. No problem. But come winter the batteries would be perilously low, risking damage. Days and days of torrential rain prevented any meaningful charging. The ability to store more power economically would be so very handy. The panels would provide vastly more power than was used during a year, but were uneconomic due to not being able to feed it back to the grid (!!?!) and not being able to store enough. I'd say that decent power storage was a bigger problem than the generation.