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solar energy exhibits the "fastest growth," providing "more than 10% of global electricity by 2050." The IEA further found that in high renewable scenarios, solar is essential due to its "almost unlimited potential":

At the American Enterprise Institute's blog, Kenneth Green promoted a press release claiming that "Solar cells do not offset greenhouse gases" because solar cell production emits gases that "make carbon dioxide (CO2) seem harmless."

When we get electricity from renewable energy sources like wind and solar power, we avoid the carbon dioxide emissions that would have come from burning fossil fuels like coal, oil, or natural gas.

Wave energy is as source of power that comes from the endless march of the waves as they roll into the shore then back out again. Humans harness this power along the coastal regions of the United States, Canada, Scotland, and Australia. Energy that comes from the waves in the ocean sounds like a boundless, harmless supply.

Advantages of Wave Energy 1. Renewable: The best thing about wave energy is that it will never run out. There will always be waves crashing upon the shores of nations, near the populated coastal regions. The waves flow back from the shore, but they always return. Unlike fossil fuels, which are running out, in some places in the world, just as quickly as people can discover them. Unlike ethanol, a corn product, waves are not limited by a season. They require no input from man to make their power, and they can always be counted on

Also unlike fossil fuels, creating power from waves creates no harmful byproducts such as gas, waste, and pollution. The energy from waves can be taken directly into electricity-producing machinery and used to power generators and power plants nearby. In today’s energy-powered world, a source of clean energy is hard to come by.

The short answer to this question is that Geothermal Energy is a type of renewable energy that is generated and stored within the Earth.

Biodiesel is a type of bio-fuel which is used to fuel cars and other vehicles. Biodiesel is used as alternative petroleum oil. Biodiesel is special because it is a clean resource and is safe to use in our environment, compared to other fuels that pollute the planet. Biodiesel is made from renewable resources which make it easier to produce. Biodiesel also lubricates car engines, which decreases engine wear, making the engine last longer. Speaking of engines, biodiesel is compatible with most car engines that run on diesel. According to researchers, biodiesel can reduce the risk of cancer, which the emitting of petroleum oil have been known to cause.

Solar technologies produce few negative environmental impacts during collector operation.

Solar energy is good for the planet because it is a clean way to produce things we need every day. It doesnt cause pollution because it is nature's own energy and is a 100% renewable resource.

What is U.S. electricity generation by energy source? In 2012, the United States generated about 4,054 billion kilowatthours of electricity.  About 68% of the electricity generated was from fossil fuel (coal, natural gas, and petroleum), with 37% attributed from coal. Energy sources and percent share of  total electricity generation in 2012 were:  Coal 37% Natural Gas 30% Nuclear 19% Hydropower 7% Other Renewable 5% Biomass 1.42% Geothermal 0.41% Solar 0.11% Wind 3.46% Petroleum 1% Other Gases < 1%

Advantages of Tidal Energy1)  It is an inexhaustible source of energy. 2)  Tidal energy is environment friendly energy and doesn't produce greenhouse gases. 3)  As 71% of Earth’s surface is covered by water, there is scope to generate this energy on large scale. 4)  We can predict the rise and fall of tides as they follow cyclic fashion. 5) Efficiency of tidal power is far greater as compared to coal, solar or wind energy. Its efficiency is around 80%. 6)  Although cost of construction of tidal power is high but maintenance costs are relatively low. 7)  Tidal Energy doesn’t require any kind of fuel to run. 8)  The life of tidal energy power plant is very long. 9)  The energy density of tidal energy is relatively higher than other renewable energy sources.

Disadvantages of Tidal Energy 1)  Cost of construction of tidal power plant is high. 2)  There are very few ideal locations for construction of plant and they too are localized to coastal regions only. 3)  Intensity of sea waves is unpredictable and there can be damage to power generation units. 4)  Influences aquatic life adversely and can disrupt migration of fish. 5)  The actual generation is for a short period of time. The tides only happen twice a day so electricity can be produced only for that time. 6)  Frozen sea, low or weak tides, straight shorelines, low tidal rise or fall are some of the obstructions. 7)  This technology is still not cost effective and more technological advancements are required to make it commercially viable. 8)  Usually the places where tidal energy is produced are far away from the places where it is consumed. This transmission is expensive and difficult. Tidal Energy is thus a clean source of energy and doesn’t require much land or other resources as in harnessing energy from other sources. However, the energy generated is not much as high and low tides occur only twice a day and continuous energy production is not possible.

Photovoltaic cells are made of at least two layers of semiconducting material. The first layer has a positive charge; the next layer has a negative charge. When sunlight strikes the cell, the semiconducting material absorbs photons from the light. This process frees electrons from the negative layer, which move to the positive layer. This flow of electrons constitutes an electric current, which can be captured in a circuit connecting the two layers. The electricity generated by a photovoltaic cell can be used directly, stored in batteries or sold back to a utility company.

If solar panels are manufactured using electricity from coal-burning plants, they indirectly emit greenhouse gas emissions. That makes them less clean than a panel that’s manufactured using renewable energy.

hexafluoride