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This study compares the economic viability of renewable energy technologies – wind, solar photovoltaic, concentrated solar thermal, biomass and wave power – to traditional generation technologies including hydroelectricity, nuclear power, coal power and gas power sources. The Levelised cost of Electricity (LCOE) for different generation technologies in Brazil are calculated by reviewing existing published literature and examining 13 case study projects. Initial results found that using a low (5%) discount rate, the hydroelectric plants had the lowest LCOE, but were only slightly cheaper than the wind power case studies. However, using a high (10%) discount rate, one of the wind power case studies actually had the lowest LCOE. Solar photovoltaic (PV) was found to be the most expensive technology followed by wave power and concentrated solar thermal power (CSP). It will be shown that grid connected …