I work in the green jobs industry, and I can tell that on the ground it is a nonpartisan industry. Green building design, energy audits, energy efficiency retro-fit construction, sustainable building materials, etc. are supported by people in this industry regardless of political views, although some are more cynical and some more optimistic.
The key with environmental issues is that they are ALMOST ALWAYS ABOUT PEOPLE. Climate Change is a classic example; fundamentally -- no matter what the techno-policy folks tell you -- it's about protecting people and our resources. I have worked for and volunteered for numerous environmental organizations, and they may claim otherwise but it gets down to people (of course, many organizations readily admit this, which is good thing). Short of a nuclear war or asteroid impact, the earth will take care of itself just fine for the next several hundred of millions of years. So the most important thing is to understand how your environmental actions and solutions can positively impact the people and group who you care about.