Solar energy is the energy derived directly from the Sun. Along with nuclear energy, it is the most abundant source of energy on Earth. The fastest growing type of alternative energy, increasing at 50 percent a year, is the photovoltaic cell, which converts sunlight directly into electricity. The Sun yearly delivers more than 10,000 times [...]
Renewable Resource
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The initiative proposes to require large utilities to obtain 15% of their electricity from new renewable resources such as solar and wind but excluding hydro by 2020 with incremental steps of 3% by 2012 and 9% by 2016 along with undertaking cost-effective energy conservation. Adapted from the Wikipedia article Washington Initiative 937 (2006), under the [...]
The concept of sustainable development can be traced to the energy (especially fossil oil) crisis and the environment pollution concern in the 1970s. The green building movement in the U.S. originated from the need and desire for more energy efficient and environmentally friendly construction practices. There are a number of motives to building green, including [...]
Most transportation fuels are liquids, because vehicles usually require high energy density, as occurs in liquids and solids. High power density can be provided most inexpensively by an internal combustion engine; these engines require clean burning fuels, to keep the engine clean and minimize air pollution. The fuels that are easiest to burn cleanly are [...]
renewable energy in Scotland is an issue that has come to the fore in technical, economic, and political terms during the opening years of the 21st century. The natural resource base for renewables is extraordinary by European, and even global standards. In addition to an existing installed capacity of 1.3 Gigawatts (GW) of hydro-electric schemes, [...]
Natural resources such as coal, petroleum, oil and natural gas take thousands of years to form naturally and cannot be replaced as fast as they are being consumed. Eventually natural resources will become too costly to harvest and humanity will need to find other sources of energy. At present, the main energy sources used by [...]
Small-scale wind power is the name given to wind generation systems with the capacity to produce up to 50& kW of electrical power. Isolated communities, that may otherwise rely on diesel generators may use wind turbines to displace diesel fuel consumption. Individuals may purchase these systems to reduce or eliminate their dependence on grid electricity [...]
Solar power in New Jersey has been aided by a Renewable Portfolio Standard which requires that 22.5% of New Jersey’s electricity come from renewable resources by 2021, and by one of the two most favorable net metering standards in the country, along with Colorado, both of with allow unlimited customers up to 2 megawatts each [...]
Solar power in California has been growing rapidly, because of a Renewable Portfolio Standard which requires that 20% of California’s electricity come from renewable resources by 2010, and 33% by 2020. Much of this is expected to come from solar power. California leads the nation in the total number of homes which have solar panels [...]
One major project that is being worked on is the development of nanotechnology in solar cells. Solar cells are more efficient as they get tinier and solar energy is a renewable resource. The price per watt of solar energy is currently lower than one dollar. Adapted from the Wikipedia article Green nanotechnology, under the G. [...]
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