These databases (and more) are available via the A-Z Databases list.
While extremely helpful and usually robust, subscription databases are not the only place you can find ecopreneurial information. Municipal and NPO websites, as well as social media, should never be ignored. Google Advanced Search can reveal all kinds of useful data and information. Try entering a few keywords plus the filetype filter to search for PDFs, DOCs, XLSs, PPTs, and more. The site filter is also great for searching websites that do not have a prominent search feature.