The 4 Major Types Of Renewable Energy

By Tim McDonald

As the planet's non-renewable energy sources start to run dry, everyone needs to do their part in making more use of abundant renewable energy instead.

So far we are able to produce 4 types of renewable energy: hydro energy, wind energy, solar energy, and geothermal energy.

Wind Power:

Wind energy has been used for thousands of years. Initially windmills were built to tow boats, grind flour and pump water. But as industry developed, wind turbines were put into operation to generate electric power.

Although many people envision windmills as those ornate ones in Holland or the small wind-pumps on farms, they have been developed tremendously in the past decade. Now wind turbines are able to generate thousands of megawatts of power, and when used on a small scale at home, wind power can substitute conventional energy sources, helping households to get off the grid.

The Sun:

The sun is the most readily available form of energy there is, so we should be using it to a larger extent. And as technology advances, households are provided with a number of ways to harness the power of the sun. These ways include solar electricity, solar heaters, solar dryers and solar cookers.

With solar electric and heating systems, they are both cost-effective, good for the environment, they require little maintenance and help you save on your utility bills. Solar cookers are very healthy way of cooking food, since they cook the food at a lower temperature-helping to retain its vitamins and minerals. They are also very portable, making them ideal for travelers and campers.

Water Power:

Initially hydro or water power was used industrially in rivers and waterfalls to power waterwheels that would then be used to move water for irrigation or grind flour.

In modern times the power of water is mainly used in to generate hydro-electricity. This is mainly done is large dams, where water is stored and released through small channels. The force of the water through these channels is extremely strong and capable of spinning large turbines, that then generate electric power. An example would be the Hoover Dam that is used primarily to supply Las Vegas with electricity. Over 90% of our renewable energy is generated with hydro-electric dams.

The have been numerous concerns with building dams for hydro-power. They can lead to the extinction of various plant and animals, and entire villages and communities have to relocate when dammed up rivers flood their land.

Geothermal Energy:

Most of the time Geothermal energy is harnessed in volcanic regions, where molten lava is rather close to the earth's surface. An good example would be in Iceland, an extremely volcanic island that generates a lot of its power in this way.

Here, large power plants are built over the geysers, where hot fast-moving steam from the geysers drives large turbines to make electricity. To speed up the process, water is sometimes pumped back into the geysers to make more steam, which is then used to drive the turbines once again, thus making it an endless cycle.

This brings us to the end of the various types of renewable energy explored. To find more in-depth information on each source, you can visit our website at DIY-Renewable-Energy dot com.

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