Globally, there has been an increase in the development of marine renewable-energy technology and installations. Due to it's large coastline, Chile provides an ideal location to develop marine energy. We use best-worst scaling to assess the preferences of the Chilean public for the characteristics of potential marine energy installations. The characteristics that we assessed included: environmental impacts, aesthetic qualities, and cost. We use latent class analysis to understand heterogeneity in preferences among different socio-economic groups.