Renewable energy is energy that is generated from renewable resouces, such as sunlight and wind. They are considered renewable resources because they can be replenished by natural processes at a rate comparable, or faster, than its rate of consumption.
Where other forms of energy, such as coal, oil and natural gas pollute the air, create toxic waste, and consume and contaminate the water, renewable energy resources avoid these impacts and risks.
Solar Power
Solar power is energy that is taken from the sun, and then converted into thermal or electrical energy. Solar power captures energy from the sun in a variety of ways, such as solar cells, Solar water heaters, and Solar furnaces.
Solar energy is a free and inexhaustible fuel source. No waste or pollution is expelled from its usage. It's range of uses can be from low power, such as calculators, to larger ones, such as air conditioning.
Wind Power
Wind power is actually a form of solar power, because wind is caused by heat from the sun. Solar radiation heats every part of the Earth’s surface, but this does not occur evenly or at the same speed. Different surfaces absorb and reflect at different rates. As a result, the air above the Earth’s surface also warms and cools at different rates.
When hot air rises, the atmospheric pressure near the Earth’s surface is reduced, and this draws in cooler air to replace it. That movement of air is what we call wind.
When air moves, causing wind, it has kinetic energy, which is the energy created whenever mass is in motion. With the right technology, the wind’s kinetic energy is captured and converted to other forms of energy.
Like solar power, wind power is a free fuel source, and no waste or pollution is expelled from its usage.
