Canada is a world leader in the production and use of renewable energy, with renewable energy representing 17% of Canada’s total primary energy supply. In the electricity sector, hydroelectricity is the largest renewable energy source in Canada, accounting for approximately 60% of Canada’s electricity generation. Other non-hydro renewable energy sources, such as biomass, wind, tidal and solar, contribute to increasing this share by 3% to over 63%. When adding nuclear energy, over 77% of Canada’s electricity generation does not emit greenhouse gases. Canada is the world’s third largest producer of hydroelectricity, and it is positioned ninth globally in terms of wind energy installed capacity. Canada also has one of the largest tidal barrage power plants in the world – the 20 MW Annapolis tidal power plant in Nova Scotia.SolarCanada has plentiful solar energy resources, with the most extensive resources being found in southern Ontario, Quebec and the Prairies. The territories have a smaller potential, and less direct sunlight, because of their higher latitude.With 559 MWp of installed photovoltaics in 2011, Canada ranked 14th among the world's countries. Ontario has a program of moving away from coal and promoting renewable resources which has led to a number of industrial-scale photovoltaic plants being built. Located in Sarnia, Ontario, the 97 MW Sarnia Photovoltaic Power Plant was briefly the largest solar farm in the world (in October 2010) and can power more than 12,000 homes. Other plants include the 23.4 MW Arnprior Solar Generating Station and a 68 MW solar farm is in Sault Ste. Marie.GeothermalThere is very little geothermal electricity generation in Canada at present but there is a potential for generating a substantial amount. The high-temperature sources can be used for generating electricity and the cooler sources can be used for local heating..Wind EnergyWind power has experienced strong growth in recent years. Over the projection period, it makes the largest contribution to non-hydro renewable growth. At the end of 2011, wind power generating capacity in Canada was 5,265 megawatts MW, providing some 2.3% of Canada's electricity demand. Ontario, Quebec and Alberta each had more than 1,000 MW of capacity. All provinces and territories, except Nunavut, had some commercial wind power in 2012.Biomass/ BiogasCanada’s biomass includes an abundance of sustainable, renewable, combustible and/or consumable vegetation and waste material, available Canada-wide. In a relatively energy-inefficient process, Canada is growing crops to produce ethanol as a vehicle fuel to replace oil. Canada has been producing ethanol from corn in Ontario and grain in the western provinces. As well as a fuel for light vehicles, biomass is being used to produce biodiesel and aviation fuel.HydroHydroelectric power is the greatest source of power generation in Quebec, British Columbia, Manitoba and Newfoundland-Labrador. All four provinces have extensive potential hydro power resources aggregating some 30.000 MWe. Some potential hydro power resources exist in northern Ontario and one on the Slave River in Alberta. Canadian-developed, high voltage direct current transmission may make these remote resources viable options.