These are, I believe some of most knowledgable and helpful people in the business.
I have personally either purchased products from these companies or have had service done by them.
I would not include them on this site unless I had a good experience with them.

Abraham Solar
http://www.abrahamsolar.com/
"Mick" Abraham

McDonal Solar and Wind
http://mcdonaldsolarandwind.com/

OTHERPOWER
http://otherpower.com/
These folks are really great! I had the pleasure of going to Fort Collins Colorado to attend a "Wind Power Workshop". We got to see everything that goes into building a wind turbine as well as getting hands on experience. Our whole group actually built a complete machine from scratch and then it was auctioned off at the end. What a great and unique experience. If you ever have the chance, take the class - you won't be sorry!

Outback Power
http://www.outbackpower.com/
I have not dealt with this particular company but I have included them since I have heard of some who have and they have had really good results.