If you invest in a large solar energy system, you could actually make money off of it. If you can pull enough solar power with a collection of solar panels, you may be able to sell your excess electricity to neighbors or even the power company. Contact your local company to see if this could work for you.
If you are wondering if solar energy is the right choice for you, why not try leasing a system first. This can reduce your payments dramatically while giving you the same benefits.
This is the system I am using for mounting my 8 -100 watt solar panels on the roof of my workshop the flashing is called Quick mount PV.