Carefully consider the types of solar panels you plan on having installed. Long ago, if you didn't have enough roof space, you'd need very expensive high efficiency mono-crystalline panels. There are now more advanced polycrystalline panels and even thin film panels. If you've got enough roof space, you might wish to look at the size of the panels in relation to their output capacity to avoid having insufficient panels that you need more of later.
Carbon based pollution will be tremendously reduced when cars that are powered by the sun become widely available. But, there are other devices that work well on solar energy. Solar powered generators can be purchased, and are a great source of energy in emergencies.
Using uniseals and PVC fence post.
If you know nothing about installing the equipment needed for solar energy, contact a professional to do it for you. The installation of solar energy panels and equipment is something rather specialized. If you attempt to install it yourself and do not do it right, you can ruin the equipment involved.