There are many things we can all do to produce/save energy, Solar PV, although one of the better technologies is not the only one.
However some of these do need a little Government support, and this is where it is failing.
The whole industry is so complex, and getting even more so, day by day.
There is no clarity as yet, for the future, I am afraid it all comes down to politics, sadly, that means, our industry is guided by, quite frankly, those that have not got a clue.
The whole renewable/alternative energy industry does have a future, as we can not carry on using fossil fuels in the way that we have been, but as yet there is not one specific answer to it all.
This is just my opinion and I hope it helps.