This post comes to us from our partners at Ener-g, who produce and manage energy efficient, sustainable and renewable technologies.
Renewable energy systems - or energy development - is the process of creating sufficient primary and secondary sources of energy to help us supplement and even eschew our use of fossil fuels. The delivery of energy services and the production of many manufactured goods have caused technologically advanced societies to become increasingly dependent on external energy sources.
Depending on factors like the climate, levels of traffic congestion, and pollution these energy level uses differ from society to society, and it has allowed people who can afford this energy to live under otherwise unfavorable climate conditions.
Renewable energy is power harnessed from natural resources like tides, rain, wind and sunlight, and which can also be naturally replenished. Around nearly 20 percent of all global energy in 2009 came from renewable sources, compared to electricity generation which was around 19 percent.
Wind power is one of the most popular forms of alternative energy, and it is growing at the rate of 21 per cent every year. By the end of 2011, photovoltaic installations had increased by over 70 per cent worldwide, and presently, ethanol fuel from sugar cane now provides over 18 per cent of Brazil’s automotive fuel.
Alternative renewable energy systems have benefited from increased concerns surrounding the environment, and coupled with rising oil prices and governmental support, new and improved energy legislation continues to benefit countries all over the world. By the year 2030, scientists believe that nearly 100 per cent of the world’s energy will be able to be sourced from wind, solar power and hydroelectric energy solutions.
There are also a number of rural areas that have benefited from renewable technologies, even though many renewable energy projects are large-scale. In human development, sourcing energy is crucial, and globally, it’s estimated that over 3 million people now generate their own power from solar panels attached to their homes. Villages and small scale counties have started implement micro-hydro systems that provides power to the local community, and over 30 million households worldwide receive power in the form of bio gas.
Hydroelectric energy is one of the oldest forms of harnessing energy, and there are hundreds of stations all over the world. This type of energy is created when the gravitational descent of a river is compressed into a single location, creating a place where concentrated pressure can be used to spin turbines, thus driving an electric generator.
There have been a number of unexpected results when it comes to hydroelectric energy however, and one such in the Amazon showed that a hydro dam generated nearly four times as much greenhouse gases than electricity production from oil. Results like these have driven scientists to the furthest reaches of our oceans to implement underwater turbines, removing the need for a dam and the subsequent greenhouse gas effect. Research into hydroelectricity has even shown that electricity can be stored in water reservoirs that at placed at different altitudes, through the process of pumped-storage hydroelectricity.
Written on behalf of ENER-G, they are an all encompassing renewable energy company who specialise in a variety of techniques ranging from landfill gas extraction, energy from waste and anaerobic digestion. Click here for some anaerobic digestion advice.
Image Credit: Creative Commons photo by Evi Christodoulou