Problem with solar energy production is that it is highly climate dependent.
For example, Tasmania where i live has an average daily window of about 3.4 hours in which PhotoVoltaic panels actually generate electricity.
It's also very dependent on the buyback policies on the grid, I think the NEM (national energy market) in australia is only paying peanuts for energy generated by homes. Hopefully the increase in battery tech assists in this.
I wouldn't say that is a "Problem" . It is however a cause and effect. Perhaps you could have wind? If so that is where you should look.
I guess it was a poor choice of words in this context. I've just had to explain that to a few people who live in the area that think solar is the solution to all their problems.
We have a very effective hydro system in our state, and a few wind farms. There isn't a great deal going for home-scale wind generation as yet. Just a matter of time I suppose.