1) are you handy, a manager, provident? to make solar economical, you should install them yourself. Savings are considerable. Even if you contract some to a roofing contractor, you should be prepared to do the rest yourself. Shop the best deals.
2) do you have a high enough income to enjoy the tax advantages?
3) can you pay cash for your system? This is probably the most important question. It is absurd to finance.
Here's one way to look at it: a tax free income, particularly if you can buy the system just before retirement and you plan to stay in the home. You will always have to buy electricity. You'll pay taxes on the income you need to buy that electricity. Even the electricity is taxed. You are not just saving on the cost of the electricity but the taxes involved. Another bonus: you can leave the lights on if you want to, turn the thermostat where you please.
Think about all this--don't reject it if it interests you just because it's hippy-dippy.
Excellent advice.
Heck, by the time one learns enough to cut through the political and sales talk mumbo jumbo one’s learned enough to DIY!