Renewable energy e-commerce site, like shopping.com

Hello, I am looking to start a new site aimed at letting suppliers of renewable energy products sign up to the site and sell their products through the site, and I get a commission for each item they sell (affiliates). There is not really any sites like it that I can find to give you an example of it, however it is just a simple portal site where users can sign up and sell their items, the same sort of principle as [login to view URL], [login to view URL] or something like that (there is plenty websites out there that do the similar thing), where I wont actually be selling any products myself, other suppliers just use the site as a place to sell theirs. I mentioned the site would be for renewable energy products, these products will be aimed at a personal consumer level (such as small wind turbines and solar panels) not aimed at any large corporations or anything! Preferably as well you will have good attention to the design of the site, as I would like the look of the site to be quite simple and also as it is a renewable energy website give it a natural look and feeling to it. Please get in contact if you are interested in this project, I look forward to hearing from you! Mike