When you consider your potential customer, would they be consumers or businesses? If businesses in the alternative energy realm, I would start by calling solar installers or suppliers and what you may find, is that most people want to be helpful and connect you with someone who may be of assistance.
Remember, in business there are no foolish questions. Let’s say that you are exploring competitive products, you will learn nuggets along the way. After all, we don’t know what we don’t know.
I hope this helps.