World Sustainable Energy Day

Today is a world sustainable energy day. I like to share some of the knowledge about it, a world sustainable energy day is celebrated on 27th of February every year the major theme of sustainable energy day is energy transition full speed ahead energy is nothing but is a backbone of evolution of humanity it has assisted a mankind to endurance through various ages of history it was set up by the regional government in 1991 to promote energy efficiency renewable energy sources and innovative energy technologies sustainable energy is nothing but it's just a form of energy that can be virtualized again  without putting a danger of getting depleted expect or banished it is called the sustainable energy. It can sustain us for a long time, renewable energy  is nothing but is energy that collected from the renewable resources like solar energy, wind energy, tidal energy, wave energy and geothermal energy.

                            Every year the world uses 35 billion barrels of oil and this massive scale of fossil fuel dependence pollutes the earth and it won't last forever. Scientists estimate that we've consumed about 40 percent of the world's oil according to present estimates. At this rate we'll run out of oil and gas in 50 years or so and in about a century for coal on the flip side, we have abundant Sun, water and wind, these are renewable energy sources, meaning that we won't use them up over time what if we could exchange our fossil fuel dependence for an existence based solely on renewables. We've pondered that question for decades and yet renewable, energy still only provide about 13 percent of our needs. That's because reaching 100% requires renewable energy that's inexpensive and accessible this represents a huge challenge even if we ignore the politics involved and focus on the science and engineering we can better understand the problem by understanding how we use energy, global energy use is a diverse and complex system and the different elements require their own solutions but for now we'll focus on two of the most familiar in everyday life,

Electricity and liquid fuels electricity

Powers blast furnaces elevators computers and all manner of things in homes businesses and manufacturing meanwhile liquid fuels play a crucial role in almost all forms of transportation let's consider the electrical portion first the great news is that our technology is already advanced enough to capture all that energy from renewables and there's an ample supply the Sun continuously radiates about 173 quadrillion watts of solar energy at the earth which is almost 10,000 times our present needs it's been estimated that a surface that spans several hundred thousand kilometres would be needed to power humanity at our present usage levels so why don't we build that because there are other hurdles in the way like efficiency and energy transportation to maximize efficiency solar plants must be located in areas with lots of sunshine year-round like deserts but those are far away from densely populated regions where energy demand is high there are other forms of renewable energy we could draw from such as hydroelectric geothermal and biomass  but they also have limits based on availability and location in principle a connected electrical energy network with power lines criss crossing the globe would enable us to transport power from where it's generated to where it's needed but building a system on this scale faces an astronomical price tag we could lower the cost by developing advanced technologies to capture energy more efficiently the infrastructure for transporting energy would also have to change drastically present-day power lines lose about six to eight percent of the energy they carry because wire material dissipates energy through resistance longer power lines would mean more energy loss super conductors could be one solution such materials can transport electricity without dissipation unfortunately they only work if cooled to low temperatures which requires energy and defeats the purpose to benefit from that technology we'd need to discover new superconducting materials that operate at room temperature and what about the all-important foil derived liquid fuels.

                          Chemical energy this is already happening in labs but the efficiency is still too low to allow it to reach the market to find novel solutions we'll need lots of creativity innovation and powerful incentives the transition towards all renewable energies is a complex problem involving technology economics and politics priorities on how to tackle this challenge depend on the specific assumptions we have to make when trying to solve such a multi-faceted problem but there's ample reason to be optimistic that we'll get there top scientific minds around the world are working on these problems and making breakthroughs all the time and many governments and businesses are investing in technologies that harness the energy all around us ted-ed is a non-profit if you value our work please consider supporting it on.

Solar power could be the world's top power source by 2015. It creates more jobs for fossil fuels massive corporations are touchy to go green it can help you to save money for example imagine a house that you use a coal to fire to heat it and one that use a wind turbine to power an electric radiator if you want to take off bag of coal and use exclusive heat at home you would burn through the bag and then there would be a nothing left the energy produced is sustainable because the source is indefinitely available and doesn't have the planet to produce because of some negative and irreversible extensive in conventional energy production it is necessary to develop and promote renewable energy supply technologies and demand for renewable energy poor generation using renewable energy source should be increased in order to decrease in illiterate cost of generation be energy efficient today and every day China is a top most energy production for the solar energy conclusion because of some negative and irreversible extensions it in conventional energy production it is necessary to develop and promote renewable energy supply technologies and demand for renewable energy power generation using renewable energy sources should be increased in order to decrease in unit cost of generation be energy efficient today everyday.

Happy learning