Smart Energy Solutions: Increa Renewables
年亲的嫂子
A variety of energy sources can be ud to generate electricity, including coal, natural gas, nuclear power, and renewable resources like wind, water, plants, and the sun. Our energy choices have direct implications for our health, our environment, and our climate – and right now we are dangerously dependent on coal and other fossil fuels for most of our electricity needs.
Coal is abundant and more equally distributed throughout the world than oil and gas. Global recoverable rerves are the largest of all fossil fuels, and most countries have at least some. Moreover, existing and prospective big energy consumers like the US, China and India are lf-sufficient in coal and will be for the foreeable future. Coal has been exploited on a large scale for two centuries, so both the product and the available resources are well known; no substantial new deposits are expected to be discovered. Extrapolating the demand forecast forward, the world will consume 20% of its current rerves by 2030 and 40% by 2050. Hence, if current trends are maintained, coal would stil
l last veral hundred years. However, coal is the worst offender, a dirty energy source that produces less than half our electricity but more than 80 percent of all power plant carbon emissions, along with significant and harmful levels of pollutants that degrade our environment and adverly impact our health.违纪违法
室外运动There’s a better, cleaner way to meet our energy needs. Renewable energy resources like wind and solar power generate electricity with little or no pollution and global warming emissions. To move the world toward a cleaner, healthier energy future, we need smart policy decisions focud on two primary goals: Increa renewable energy and decrea the u of coal.
Support for renewable energy is growing worldwide and at the beginning of 2014, the governments of 144 countries have t renewable energy targets, almost a ten-fold increa since 2005 when only 15 countries had policies in place. Emerging and developing economies are leading the way, with 95 of them having renewable energy policy plans, according to the Renewable 2014 Global Status Report.
遥遥在望的意思
儿童城堡简笔画The world generated 22.1 percent of its electricity from renewable sources in 2013, even though governments in the EU and US reduced their support. Renewable energy provides 6.5 million jobs worldwide, the report said.
避地
China, the US, Brazil, Canada, and Germany are the top renewable power countries in 2013, with Spain, Italy, and India making huge strides, according to the report. Denmark leads per capita power generation, and Uruguay, Mauritius, and Costa Rica were among the top investment locations.
The most significant growth is in power generation, as global capacity jumped 8 percent to more than 1,560 gigawatts (GW) in the last year. Hydropower ro by 4 percent to 1,000 GW, and overall renewables grew 17 percent to more than 560 GW.
Over 140 countries have adopted new renewable energy targets, including the United States, which has pledged to increa renewable energy capacity 50 percent by 2020. President Obama has promid to slash America’s dependence on coal, and to switch power plants towards cleaner energy.
However, it will be difficult for America to switch off coal consumption, as many states depend on it for their economic livelihood. Many lobbying groups are protesting the new clean energy act, saying it unfairly deprives local industries. Even though coal is a proven dirty energy source consumption has reached a 44-year high.
Alternative and clean energy is no longer just a hip trend among environmentalists, but a real energy solution that provides power to homes and offices. The market has matured and become an attractive option for energy curity. From the currently available technologies, solar photovoltaics, followed by wind power, concentrated solar power and geothermal, have the highest potentials in the power ctor. The u of ocean energy might be significantly higher, but with the current state of development, the technical and economical potential remains unclear.
Germany is pushing its economy towards renewables, and produces half of its electricity from solar power, The Local reports. In Denmark wind power meets 33 percent of electricity demand, in Spain 20.9 percent, and in Italy solar power meets 7.8 percent of el
ectricity needs. Many cities across the globe have a goal to transition to 100% renewable energy.
lol打野>外公外婆英语Over the last 5 years, solar power has on average expanded 55 percent per year, according to the report. Clean energy is becoming cheaper and more popular with consumers, and investors are snapping up the opportunity. Elon Musk, the entrepreneur who invested early in PayPal and the Tesla electric car, has put money into solar power, and Google is weighing a move into the renewables ctor.
Current levels of renewables development reprent only a tiny fraction of what could be developed. Many regions of the world are rich in renewable resources. Spain and Portugal sit on a bed of geothermal energy, but currently u none of it. Scientists from the Renewable Energy Journal estimate Spain has the potential to produce up to 700 GW, which is five times the current electricity power generation of Spain.
