Wind and solar installation are a growing sector. If you want to install a solar panel on your roof, there are many qualified installers. If your roof has a leak and requires a repair, it would signal the time for getting a new solar panel.
Wind installations are slightly different since it requires strong wind in the area. Solar installs require a sunny climate and wind installs require windy climate.
There are roof wind turbines that you can install on your roof, similar to rooftop solar installations. If you want to decide if wind or solar wind turbines are the best for your roof, you can contact a roofing contractor in your area to get the best opinion to make the right decision.