What are the effects of macroeconomic variables on venture-backed capital investment in environmentally friendly industries in the United States? What is the significance of location in determining both the number of deals and amount of investment by venture  capital in the Clean-tech industry? The Clean-tech sector encompasses those firms that actively incorporate environmental concerns into their products and services. The sector contains environmentally progressive companies from many different traditional, functionality-based industries such as software, energy, telecommunications, etc. This paper ascertains the effects of macroeconomic variables and the location on venture-capital backed investment in the Clean-tech industry in the United States.