31 dez 2011 ano - Renewable energy could power 80% of the world by 2050, according to the UN-affiliated International Renewable Energy Agency. The report follows other studies of the potential for renewable energy, including a study published in Energy Policy in January 2011. Many regions, nations and states began setting renewable energy goals and policies, including 30% renewables for California by 2020 and 20% renewables for Europe by 2020.
