Who to contact

Besides possibly with volunteering with any of the organizations in the Coalition for Clean and Affordable Energy, you should contact your legislative representatives, and also the New Mexico Public Regulatory Commission, and you can always write letters to the editor. Here are some general resources:

Write your representatives in the New Mexico State Legislature or the United States House of Representatives or the United State Senate online!. These services will tell you who your representatives are if you can't remember, and you can learn all the basics about how these branches of government function if you want to in easy to read tutorials. If your curious, you can find out about the environmental stances of your legislators from the League of Conservation Voters.
Call your commissioner at the New Mexico Public Regulatory Commission (just call the main number if you can't remember your district number-1-800-947-4722), as well as their legislators, to make your wishes known. Some PRC Documents are posted on this website.
You may want to sign up for legislative alerts on renewable energy related bills from groups such as the Conservation Voters Alliance of New Mexico or the New Mexico Public Interest Research Group. These dedicated folks read every piece of proposed legislation and amendment in the New Mexico State Legislature.
Many organizations exist which provide news, analysis, and advice on promoting renewable energy. Two good sources are the American Solar Energy Association and the Renewable Energy Policy Project.