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Which Power Source Is Most Efficient?

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Australian researchers just unveiled the most efficient solar panels ever. How efficient are they, and what is the most efficient source of energy? Get 15% off's s domain names and web hosting when you use coupon code DNEWS at checkout! Read More: In world first -- UNSW researchers convert sunlight to electricity with over 40 percent efficiency "UNSW Australia's solar researchers have converted over 40% of the sunlight hitting a solar system into electricity, the highest efficiency ever reported." New world record for solar cell efficiency at 46% French-German cooperation confirms competitive advantages of European photovoltaic industry "A new world record for the direct conversion of sunlight into electricity has been established." Australia develops world's most efficient solar panels "?Australian researchers have developed a new method of using commercial solar panels that converts more electricity from sunlight than ever before." What is the efficiency of different types of power plants? "One measure of the efficiency of a power plant that converts a fuel into heat and into electricity is the heat rate." Improving Efficiencies "Improving efficiency levels increases the amount of energy that can be extracted from a single unit of coal." The Most Common Electricity Sources in the U.S. "Though renewable energy is growing fast, the U.S. still gets the vast majority of its power from conventional power plants." Increasing the Efficiency of Existing Coal-Fired Power Plants "Coal has long been the major fossil fuel used to produce electricity." Coal Will Survive as Efficient Power Plants Boost Demand "President Barack Obama's plan to reduce greenhouse-gas emissions left coal with a future even as the industry accuses him of trying to make the fuel obsolete." How Do Wind Turbines Work? "So how do wind turbines make electricity?" Screwy-looking wind turbine makes little noise and a big claim "Although it's getting increasingly common to see solar panels on the roofs of homes, household wind turbines are still a fairly rare sight." Betz's law Wind Energy More Energy Efficient than Fossil Fuels "Here's something that may surprise you. Wind energy is more efficient than carbon-based fuels." Wind Energy's Shadow: Turbines Drag Down Power Potential "As seemingly limitless as the air that swirls around us, wind has proven to be the world's fastest-growing source of renewable energy." Advanced Nuclear Power Reactors "The nuclear power industry has been developing and improving reactor technology for more than five decades and is starting to build the next generation of nuclear power reactors to fill new orders." Hydroelectric Power "Hydro-electric power, using the potential energy of rivers, now supplies 17.5% of the world's electricity (99% in Norway, 57% in Canada, 55% in Switzerland, 40% in Sweden, 7% in USA)." Hydroelectric Power "It's a form of energy ... a renewable resource." ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube Subscribe now! DNews on Twitter Trace Dominguez on Twitter Tara Long on Twitter DNews on Facebook DNews on Google+ Discovery News Download the TestTube App:
Boom? (Website that can show you what nukes would do to a particular location) (The Hiroshima - Ngasaki bombing) (How Nuclear Bombs Work (Includes both fission and fusion bombs) (How Nuclear Radiation Works) (Types of Radioactive Decay) (Nuclear Fission) (Useful inforgraphic about the relative power of nuclear weapons) (TNT equivalent) (Explains the relationship between TNT equivalent and Nuclear Blast Damage) (Ivy King Bomb) (Tsar Bomba) (FAQ about Anti-matter) (Another FAQ about Anti-matter) (Explanation behind the efficiency of Anti-matter-matter reactions) (CERN traps Anti-matter atoms for 17 minutes)
And you thought it stopped at solar panels? Trace Dominguez has the lowdown on some strange new ways to harness the sun's rays. Read More: "Three floating solar islands to launch on Swiss lake this year" "Two Swiss companies have teamed up to build three floating "solar islands", each with 100 photovoltaic panels, on Lake Neuch√Ętel this year." "Solar Island--A Groundbreaking Concept" "A Solar Island is a floating circular island (a tracking platform) with a diameter of up to 200 m. It consists of an outer torus and a membrane, on which the solar receivers are placed. " "Is Solar Energy Totally Bogus or Something that Gives Hope?" "I recently posted a simple Internet meme suggesting that if we subsidized solar energy like we subsidized fossil fuels that this could be good." "How Solar Thermal Power Works" "Most of us don't think much about where our electricity comes from, only that it's available and plentiful." "Space Energy: Is Space Solar Power Feasible?" "With the end of "cheap oil" rumored to be rapidly approaching (if not already upon us), not to mention the effects of fossil fuel use upon the environment and climate, sources of alternate, clean and renewable energy appear to be the unavoidable wave of the future." "Power Plants: Artificial Trees That Harvest Sun and Wind to Generate Electricity" "A start-up proposes forests of fake trees with "leaves" that soak up sunshine and flutter in the breeze to generate clean solar and wind power. Could it just be crazy enough to work?" "Solar Or Wind Power? Why Not Both?" "Solar and wind power have long been two of the main contenders in the race to find the next big renewable energy resource. Rather than choosing between the two, scientists at Washington State University have instead combined them." DNews is a show about the science of everyday life. We post two new videos every day of the week. Watch More Subscribe DNews Twitter Anthony Carboni Twitter: Laci Green Twitter Trace Dominguez Twitter DNews Facebook DNews Google+ DNews Website
Hank explains the power of solar energy and describes how it may fit into our diversified energy future. Follow SciShow on Twitter: Like SciShow on Facebook: Credits: Produced by Hank Green Chief Editor: Blake de Pastino Cinematography: Nick Jenkins Video Editor: Matt Ferguson Graphics: Amber Bushnell Written by: Rob Chaney TAGS: solar energy, solar power, desert, power, watt, watts, coal, fossil fuel, natural gas, oil, nuclear, tidal, hydroelectric, wind, biomass, photovoltaic, photoelectric effect, edmund becquerel, efficient, efficiency, international space station, polysilicon, silicon, n-type, p-type, distributed power, concentrating solar power, power plant, plant, turbine, concentrated photovoltaic, CPV, gigawatt, hydrogen fuel cell, feasible, feasibility, law of conservation of energy, climate change, global warming, carbon, emissions, electric, electricity, scishow, science, infusion, hank green
Countries are powered by a diverse range of energy sources, but in Australia electricity generation mainly has one source: fossil fuels. Coal, natural gas, and oil account for over 90% of the country's electricity. Hydro provides 7% with only 0.3% provided by wind and solar. Should Australia consider nuclear power? It is a complicated issue leaving many uncertain about its place in Australia's energy future.
Should we really be investing in wind? SUBSCRIBE! ----Links To Follow Us Below!!---- Instagram: Gregs( Mitch( Twitter: Greg @whalewatchmeplz and Mitch @mitchellmoffit AsapTHOUGHT Facebook: Send us stuff! ASAPSCIENCE INC. P.O. Box 93 Toronto P, Toronto, ON, M5S2S6 Check out our related AsapSCIENCE video "Amazing Energy Facts To Blow Your Mind": Special thanks to GE for bringing us out to their research centre and allowing us to pick their brains! Further Reading - Calculating the flowfield in the wake of wind turbines Survey of modelling methods for wind turbine wakes and wind farms;2-7/abstract Renewable Energy Solutions
Renewable energy will undoubtedly play a part in our future. But incorporating technologies like solar panels and wind energy into our outdated electrical grid is tough, and some say not worth the cost just yet. Trace explains why, and if those naysayers have any merit. Read More: Emissions and Costs of Power Plant Cycling Necessary for Increased Wind and Solar Calculated " New research from the Energy Department's National Renewable Energy Laboratory (NREL) quantifies the potential impacts of increasing wind and solar power generation on the operators of fossil-fueled power plants in the West." Turbines, Generators and Power Plants "Thermal power plants have big boilers that burn a fuel to make heat. A boiler is like a teapot on a stove. When the water boils, the steam comes through a tiny hole on the top of the spout. The moving steam makes a whistle that tells you the water has boiled. In a power plant, the water is brought to a boil inside the boiler, and the steam is then piped to the turbine through very thick pipes." How does a hybrid car work? "We are all familiar with gasoline-powered cars, and most people have heard about or seen electric cars. A hybrid car is a combination of the two. A hybrid vehicle contains parts of both gasoline and electric vehicles in an attempt to get the best of both worlds." World Record Solar Cell with 44.7% Efficiency "The Fraunhofer Institute for Solar Energy Systems ISE, Soitec, CEA-Leti and the Helmholtz Center Berlin jointly announced today having achieved a new world record for the conversion of sunlight into electricity using a new solar cell structure with four solar subcells." Watch More: Power Grid Explained: Store Wind Energy Underground: Crazy Solar Power Plants: ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube Subscribe now! DNews on Twitter Anthony Carboni on Twitter Laci Green on Twitter Trace Dominguez on Twitter DNews on Facebook DNews on Google+ Discovery News