Renewable energies like solar and wind energies are beneficial in many ways for the environment. The same sun beam can power multiple solar panels and the same wind gust the turns windmill A will also turn windmill B which is a very efficient system.
So since the environmental benefits are established let's look at the financial benefits. When you use a renewable energy over one that is not you don't just help the environment you help your wallet in a variety of ways.
If you use
solar garden lights to light your pathways instead of plugging into the grid or leaving the yard dark you save money on the light bill and in other ways. Many insurance companies will give you breaks for adding safety and security features to your yard. Lighting could be one of these features. It is much easier to trip and hurt yourself over something you can't see. When you can see hazards you naturally avoid them.
Many people are renting homes and cannot put in windmills or solar panels since they do not own the property. There are still little things that can be done such as use
portable solar chargers to power rechargeable items like a cell phone or camera. They can light the yard with solar garden lights instead of turning on the grid tied flood lights that cost money to run and they don't decorate as well as solar garden lights do.
These are just some of the little things that can be done to stretch and conserve resources and save you money as well.
Every little bit you do helps!