What is Green Energy?

When you hear the phrase "green energy" what do you think of? Fields of windmills in the Midwest or suburban rooftops covered in solar panels? Maybe when you think of green energy you think about things that may not seem too practical or economically efficient. The fact is, just because something is green does not always mean that it has to be new or expensive. Any energy resource that is renewable, environmentally friendly and that does not pollute is a ‘green energy’ source and this category can include not only solar and wind power but also geothermal and even hydroelectric energy as well.

Let's talk a bit about each of these power sources and what makes them ‘green’. Solar energy may be the most well known up and coming green energy solution, but the technology is still in the development stage. While visions of a future where all buildings are wrapped in solar collecting material may not be too far away (in fact that technology does exist now) solar is still thought of as being inefficient, expensive and complicated to maintain. While that may have been the case some ten years ago, solar is rapidly growing out of its awkward adolescent years and developing into a hugely viable green energy option.Wind power has actually been around for hundreds if not thousands of years.

When people think of energy most of the time they are thinking of electricity, but any energy that makes things move or build up pressure is considered energy production or harvesting. Windmills were the first form of wind energy collection, and the modern equivalent are just as effective at producing electricity as their predecessors were at grinding flour. In fact, windmills are one of the least maintenance intensive source of energy, especially in what is known as the wind belt. The country’s largest wind farm is located in Texas, utilizing miles, and miles of windmills to produce clean Texas energy. Geothermal energy is a little more complicated. While places like Iceland and Wyoming have volcanic activity below their surface to provide steam and pressure, passive geothermal energy can actually be used on a worldwide level.

How much energy do we use each year heating and cooling buildings? The temperature below the ground is a constant 65 degrees F and by tapping into that with thermal rods, we can keep our buildings at that same temperature, never having to heat or cool from a greater extreme than that. Hydroelectric energy can also be considered green, but only is some situations. Small-scale hydroelectric stations do not require significant changes to the landscape and ecological balances around the water source so they are considered green. Larger outfits however require the flooding of massive amounts of area to provide a large enough reservoir to provide sufficient water volume so they leave a lasting and detrimental impact on the earth, making them not green.There are other types of green energy as well, but none of those technologies are developed to the point of being implemented.

However, when connected to the conventional power grid, green sources of energy can supplement our reliance on other, dirtier energy sources, gradually helping us make less of an impact on the delicate balances of our planet.