Until recently, Renewable Energy Technologies were seen as of marginal importance. However, with the use of fossil fuels likely to be increasingly constrained in the future, and nuclear power facing continuing uncertainties, the renewables have begun to look more attractive. In which case we are likely to see a whole new set of technical, strategic and political issues enter the energy policy debate. This paper explores some of the new issues that are likely to emerge as renewable energy challenges existing technologies and energy policy paradigms.