There is no need to tear apart your roof to use solar energy. You can make small switches like putting in solar powered outside lights. They charge their batteries during the day, switching on and providing illumination all night.
Do not install a solar system in your home without first doing an energy audit. An energy audit will assess your energy needs and will help you utilize savings before installing a solar system. The last thing you want to do is install a solar system to pay for energy you are wasting.
Purchase batteries to store excess solar energy. These batteries are similar to rechargeable batteries; however, they use the sun's energy to power up the batteries. This energy can be used in the evenings and at night to help power your appliances, televisions and lighting requirements. These batteries are relatively inexpensive making them a great choice for the beginner.
See https://diynewman.wordpress.com/2016/07/24/how-to-install-solar-panels-yourself-for-4k-diy-7kw/ for more details. This is how I installed a 7 kilowatt solar …
When it comes to solar energy, the sky is truly the limit, so learn about your options before you buy. How much space are you allowed, by local law, to fill with solar equipment? Can you sell excess energy back to the grid? What sort of regulations are in place?
If you are concerned about the environment, solar energy is the smart choice for you. The sun is a renewable resource, so you are not deteriorating the environment. Do your part to use less fossil fuels by using solar energy instead.