But you really depend on the grid for energy storage it seems. There is no technology available to consumers that can load shift and/or store energy for 2 months.
In practice, this means you waste your excess electricity (or perhaps, sell it to the grid so that someone else can use it), but then still rely upon Natural Gas peakers for those other two months.
> If the govt is willing to reintroduce subsidies and raise the fees in tariffs, a lot more people would be willing to install them.
More solar in this scenario means that everyone involved runs out of electricity in those 2 months.
A degree of the grid can be solar, but not everybody. We should get as many people on solar as is reasonable, but energy storage (especially on the scale of months) simply is science fiction.
Back in the real world, there will be 2 months+ of fossil fuels to support the lifestyle you've chosen. It's better than 12 months of fossil fuels, but we aren't at a technological level where we can ignore the natural gas plants quite yet.
But we can mitigate their use.