Globally, many politicians and business leaders are discussing the best way to transition towards a green or low carbon economy. For many countries, this involves a reliance on clean tech, but green entrepreneurs, or ecopreneurs, are implicated as actors taking forward this transition. The following case studies discuss the emergence of rhetoric around green economies and green entrepreneurs before considering a couple of real examples of entrepreneurs running green businesses. The cases will conclude with some questions for thinking about whom green entrepreneurs are, what types of businesses green entrepreneurs might run, and how more businesses can be encouraged to operate with green-orientated philosophies.