Controversy Over Nuclear Power as a Renewable Energy Source
In 1983, physicist Bernard Cohen proposed that uranium is effectively inexhaustible, and could therefore be considered a renewable source of energy. He claimed that fast breeder reactors, fueled by uranium extracted from seawater, could supply energy at least as long as the sun's expected remaining... [Read more of this review]
The U.S. electric power industry now relies on large, central power stations, including coal, natural gas, nuclear, and hydropower plants that together generate more than 95% of the nation’s electricity. Over the next few decades uses of renewable energy could help to diversify the nation’s bulk power supply. Already, appropriate... [Read more of this review]
Green Energy Trends
Trends With Renewable Energy
The renewable market will boom when cost efficiency attains parity with other competing energy sources. The following trends are a few examples by which the renewables market is being helped to attain critical mass so that it becomes competitive enough vs fossil fuels:
Other than market forces, renewable industry often needs... [Read more of this review]
Green Energy Market
Renewable energy can be particularly suitable for developing countries. In rural and remote areas, transmission and distribution of energy generated from fossil fuels can be difficult and expensive. Producing renewable energy locally can offer a viable alternative.
Renewable energy projects in many developing countries have demonstrated that renewable... [Read more of this review]
Geothermal energy is energy obtained by tapping the heat of the earth itself, usually from kilometers deep into the Earth's crust. It is expensive to build a power station but operating costs are low resulting in low energy costs for suitable sites. Ultimately, this energy derives from heat in the Earth's core.
Three types of power plants are used to... [Read more of this review]
Plants use photosynthesis to grow and produce biomass. Also known as biomatter, biomass can be used directly as fuel or to produce biofuels. Agriculturally produced biomass fuels, such as biodiesel, ethanol and bagasse (often a by-product of sugar cane cultivation) can be burned in internal combustion engines or boilers. Typically biofuel is... [Read more of this review]
Monocrystalline solar cell - in this context, "solar energy" refers to energy that is collected from sunlight. Solar energy can be applied in many ways, including to generate electricity using photovoltaic solar cells. Generate electricity using concentrated solar power. Generate electricity by heating trapped air which rotates turbines... [Read more of this review]
Hydro Water Power
Hydro Water Power
Energy in water (in the form of kinetic energy, temperature differences or salinity gradients) can be harnessed and used. Since water is about 800 times denser than air,
even a slow flowing stream of water, or moderate sea swell, can yield considerable amounts of energy.
There are many forms of water energy:
Hydroelectric energy is... [Read more of this review]
Wind Power Renewable Energy *
The main renewable energy resources that you know about are sunlight (solar energy) and wind energy and perhaps to a lesser extent tidal energy systems and geothermal energy systems. All of these are in some way or another connected to the sun, which is the ultimate life giver on this planet.
The Earth-Atmosphere system... [Read more of this review]