Technology
Technology has affected society and its surroundings in a number of ways. In many societies, technology has helped develop more advanced economies (including today's global economy). Many technological processes produce unwanted by-products, known as pollution, and deplete natural resources, to the detriment of the Earth and its environment. Various implementations of technology influence the values of a society and new technology often raises new ethical questions. |
LCNC A-Tech
Renewable Energy
Wind Power
Wind power is growing at the rate of 30% annually, with a worldwide installed capacity of 238,000 megawatts(MW) at the end of 2011, and is widely used in in Europe, Asia and the United States.
Solar EnergyAt the end of 2011 the photovoltaic(PV) capacity worldwide was 67,000 MW, and PV power stations are popular in Germany and Italy.
Solar thermal power stations operate in the USA and Spain, and the largest of these is the 354 MW SEGS power plant in the Mojave Desert.
As of 2011, small solar PV systems provide electricity to a few million households, and micro-hydro configured into mini-grids serves many more. Over 44 million households use biogas made in household-scale digesters for lighting and/or cooking, and more than 166 million households rely on a new generation of more-efficient biomass cook stoves.
Geothermal Power PlantThe world's largest geothermal power installation is the Geysers in California, with a rated capacity of 750 MW.
Brazil has one of the largest renewable energy programs in the world, involving production of ethanol fuel from sugarcane, and ethanol now provides 18% of the country's automotive fuel. Ethanol fuel is also widely available in the USA.
Renewable Energy
While many renewable energy projects are large scale, renewable technologies are also suited to rural and remote areas, where energy is often crucial in human development.
United Nations' Secretary-General Ban Ki-moon has said that renewable energy has the ability to lift the poorest nations to new levels of prosperity.
Climate ChangeClimate change concerns, coupled with high oil prices, peak oil, and increasing government support, are driving increasing renewable energy legislation, incentives and commercialization.
New government spending, regulation and policies helped the industry weather the global financial crisis better than many other sectors.
According to a 2011 projection by the International Energy Agency, solar power generators may produce most of the world’s electricity within 50 years, dramatically reducing the emissions of greenhouse gases that harm the environment.
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