Investing in green energy doesn't just apply to your personal business. It's a mindset. One of the best ways to start investing your energy and money holistically is to seek out your nearest organic farm and support them by purchasing their produce. This is critical. Small farms need support, and there's no better way to show it by eating what they grow.
This is a small measure, but it speaks volumes. Mindset can be everything. Perhaps after you find a farm you like, you can support them through your business in some way. Digital Sages gives discounts to green businesses in need of websites and promotional material, for example. This model doesn't apply to every business sector, but you might be surprised what you come up with. There's always ways to help people if you take the time to think about it. Even if it's something as small as providing a blanket discount for your services to their employees. What you send out will come back to you.