Last on our list is green financing. Last because this type of business will require some financing knowledge and course a lot of money to get going. This type of business lends money like a bank or private investor for the sole purpose of starting and running businesses that are green in nature. Capital could be significant for this business and it isn't for the faint of heart. But if you have a mind for finance and could put together a team of investors this could be the way to go.