Green Energy – Things You Should Know About Renewable Energy Sources

Growing concerns over climate change forced politicians and authorities to implement tax breaks and benefits for the companies that would shift to the green energy strategy. Simply put, green energy is energy that is collected from renewable sources, which is considered to be not harmful to the environment.

Oftentimes, one may may hear the term “alternative sources of energy.” Actually, they are considered alternative to the commonplace fossil fuel energy, which humanity has used throughout the time. In this article, you can find about the 7 types of green energy sources, which are likely to replace the fossil fuel energy in the future.

Wind Energy

Wind turbines appeared to be among the first alternative sources of energy, but now, one may take a train in Germany or Netherlands and get to observe hundreds and hundreds of windmills in the window. Basically, wind turbines capture the flow of wind and, then, turn it into electricity.

However, wind energy didn’t appear just recently – windmills for pumping water or farms have been used by humans for a long time. Just it has been only in the 21st century, when humanity could make such a way of capturing energy commercially attractive and efficient.

It is noteworthy that there can be single-wind windmills and utility-scale farms. While the first ones tend to generate electricity for an existing electric supply (when the wind blows, the demand for electricity from fossil fuels decreases), utility-scale farms tend to sell generated electricity on the markets.

Solar Energy

Another popular alternative energy source is sunlight, i.e. the way of capturing sunrays and turn them into energy. Only a decade ago, solar energy panels were extremely expensive, which made such a method of acquiring energy extremely expensive. However, the swiftly increasing demand for solar panels and batteries quickly cut the costs of producing them, thus making investments more beneficial.

There are different ways how sun rays can be converted into energy. For instance, solar hot water systems can be utilized for heating of buildings by warming up the circulating water. Nowadays, it is commonplace that commercial and industrial structures use solar energy to provide cooling, heaving and ventilation at once.


Generating electricity from water has been known to humans for quite a while. After all, the countless dams were constructed mostly a long time ago. However, the damage caused to the environment by such dams caused an uproar among eco-activists.

Nowadays, there are more efficient and less harmful way of generating electricity from water. Pumped-storage hydropower is one such way, in which water cycled between upper and lower reservoirs, thus controlling electricity generation. On the other hand, the run-of-river hydropower method produces green energy by flowing a part of the river through a channel, without the necessity of building a dam.

Geothermal Energy

This way of gaining green energy allows the heat to derive from the earth. That heat, in turn, can be sourced from heated rock and reservoirs of hot water miles under the ground, or be quite close to the surface. Then, geothermal power plants use this heat to generate electricity.

Ocean Energy

At the present time, there are two ways how energy can be produced from the ocean: in a mechanical way (energy caused by the ocean’s waves and tides) and in a thermal way (from the sun’s heat). While the first way of producing ocean energy depends on the waves (i.e. you will get zero energy if the ocean is calm), the second method needs the water to be warm and reflect sunlight.

Energy from Hydrogen

Hydrogen appears to be the simplest and the most excessive elements in the universe, which also contains a lot of energy. Usually, this element is contained in such compounds like propane, methanol, natural gas, and gasoline. Even though this method of acquiring energy is potentially groundbreaking, the jaw-dropping amounts of investments needed to make it commercially viable mean that it will remain out of fashion for quite some time.


After all, green energy can be acquired from biomass, i.e. any organic substance that derives from the recently living animals or plants. In that way, companies create ethanol and biodiesel, which can be used for transportation later. Even though bioenergy emits around as much carbon dioxide as fossil fuels, then the new plants, which would decrease the amount of carbon dioxide in the atmosphere, can be placed in the earth (on the place of that biomass).

Green Energy