When using solar power, you do not have to worry about harming the environment in any way. Fossil fuels send harmful greenhouse gases off into the atmosphere, and they contribute to global warming and climate change. However, solar cells have no impact on the environment and are safe to use.
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.
Humans have taken advantage of the sun's heat for thousands of years. A lot of energy can be saved by drying your clothes outdoors in sunny weather. This cuts down a lot on the energy used to dry your clothing in an electric or gas clothes dryer, and linens dried outside smell great.
It is a good idea to tie your solar panels system back into the grid. With this type of system, you can sell excess energy to your power company. This will help pay for the installation of your system and even allow you to make a profit on your wise investment.