Australian researchers just unveiled the most efficient solar panels ever. How efficient are they, and what is the most efficient source of energy?
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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 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."
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."
"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)."
"It's a form of energy ... a renewable resource."
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Basically the higher the voltage, the lower the losses in the lines. But a 1150 kV line would not be so safe if it came right to your house, would it? For extremely long distances (1000 km and more), high voltage DC lines are the most efficient.
Nuclear energy has a huge problem. The waste generated from nuclear energy lasts forever. Scientists haven't discovered a way of proper disposal of nuclear waste. It is dangerous for humanity.
Hydroelectric dams are destroying rivers and natural flow of rivers. Many rivers in India have become dead zones.
Decentralized Solar, wind and biomass where communities are the joint owners of renewable energy is the way forward. Also, solar, battery, biomass, biogas technologies are evolving rapidly. So, they will only get more efficient in the future.
Just a quick calculation. USA would need around 15,000 TWh of electricity to cover all the yearly energy needs (considering higher efficiency). Considering average solar irradiation of 4 kWh/m^2/day and the efficiency of solar panels of 18 %, you would need around 57,000 square kilometres and this is only the quadrature of solar panels. You would need around 1.5 million 3 MW wind turbines to get the same amount of energy (assuming capacity factor of 0.4). With that you would need a hell of a lot of batteries or some other kind of energy storage. You would also need reserve power plants for the winter and when the wind isn't blowing for a longer period of time. Also, a lot of voltage regulating devices would be needed. An alternative would be to have less than 500 nuclear power plants with 4x1000 MW reactors. This would mitigate the need for energy storage and voltage regulating. Of course we would have to find a suitable high level nuclear waste disposal first. We could maybe even try with thorium and LFTR reactors.
Thanks for sharing a video about solar panels .It is really informative .Solar Power is the conversion of the solar energy from the sun into thermal or electrical energy by way of using photovoltaic, etc.
A Solar panel is typically a panel that absorbs solar energy and uses it as a source of energy to generate electricity. They are basically made up of solar cells or the photovoltaic cells that are arranged as a photovoltaic array making up the photovoltaic system.I know a place which is one of the best solar installation company provides best solar services and products that are not just economical, but also efficient with customized solutions to offer you the best from our vast range of affordable models...
No, less efficient PV cells mean more pristine natural environments needs to be plowed over with concrete or round-up. Commercial PV plants use round-up to stop plants from growing over the panels. Also poor capacity factors mean multitude more capacity required, land and energy storage, or prayers. Reliability has a price especially if you run industry that CAN'T be turned off like aluminum recycling, sewage treatment, or hospitals. You got about 1KW per sqr meter luminosity at around 20% EFF; The capacity factor is around 10-20% annual average (basically uptime) depending on where you live.
Meanwhile a nuclear fuel bundle produces more energy than renewables can in their lifetimes (it has a million times the energy of chemical bonds so what do you expect?). Nuclear plants are mostly concrete and steel while renewables need all sorts of exotic metals in much higher quantities. A 1GW molten chloride fast reactor theoretically only needs 1 tonne of depleted uranium/nuclear waste/thorium/natural uranium for about an entire year to run and require no more space than current power plants. Turbine efficiency goes up because of the higher inlet temperatures of liquefied salt.
+ 22,393,817.40 KWh thermal per kilo of Uranium/Thorium
* 1.00 Burnup (100% in MSR breeder)
* 1,000.00 KWh thermal per tonne
* 0.35 Turbine efficiency
+7,837,836,090.00 KWh of electric per tonne
/ 8,766.00 convert to KWy (year)
+ 894,117.74 KWy per tonne
+ 1,000,000.00 KWy (1GW power plant in 1 year)
/ 894,117.74 KWy per tonne
+ 1.12 Approx tonnes of fuel per GWy
Power Efficiency Guide Will Change Our World Forever
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Well solar power is much more efficient...look at how long it takes the oil rigs to be made, the oil to be pumped and processes d then shipped across the country or continents...then look at solar and how arrays just have to have arrays built and then the they can transport the power via power lines very quickly across the city or country...then look at how wind turbines kill millions of birds a yr...so solar is obviously better.
Solar: efficiency: 18 %, capacity factor: up to 20 %
Wind: efficiency: 40 %, capacity factor: up to 45 %
Coal: efficiency: 33 %, capacity factor: up to 90 %
Gas: efficiency: 40 %, capacity factor: up to 90 %
Combined cycle gas: efficiency: 55 %, capacity factor: up to 90 %
Nuclear: efficiency: 40 %, capacity factor: up to 90 %
Coal, gas, nuclear cogeneration: efficiency: 85 %, capacity factor: up to 90 %
Solar energy also needs a lot of space, energy storage, voltage regulating devices, devices that introduct additional system inertia etc.
Thorium yes indeed and Thorium is far more abundant than Uranium! If we had made Thorium reactors for electricity instead of Plutonium they would be a lot safer and generate a lot more energy in a smaller space. Radium painted on a solar cell will also create electricity (24/7 and another interesting phenomena is that a very small piece of Plutonium or Thorium pressed against a Beryllium (Emerald) crystal will light it up very, very bright and outlast your mortal lifetime. This light will also convert into electricity via a solar cell and charge a battery 24/7 Nickel/Iron batteries using Hydroxide have now lasted over 60 years.
Forgot to mention how much a solar panel with 46 percent efficiency would cost. The efficiency (ratio of output power and input solar power) wouldn't drop because of the angle, the capacity (load) factor would. This is mixed up in the video too. Efficiency of a solar panel is the same even during night time.
Today's nuclear power plants utilize around 10-15 % of energy you would get from splitting just U-235, not accounting for the rest of fission and decay. Total energy utilization of nuclear energy is a few percent, so it's not really that efficient.
One thing I have yet to see addressed in any sort of video like this is the fact that the power grid is under a constant need for energy, solar doesnt produce at night, wind doesnt produce when the wind isnt blowing. And batteries dont hold enough power to power a city.
It like to point out, all this inefficiency in creating and distributing electricity, is also a problem for EV vehicles. Going straight to mechanical energy is much better. I understand that is not what people want to here. But it is very true. It is just a fact going from fuel to steam to electricity to transmission to charge to storage each stage loses efficiency. (not to mention battery get harder to charge with each charge) The slight of hand is to compare only at the end point. As if all these other stages don't exist. As if 100 watts in an EV only took 100 watts of potential energy. The amount of fuel needed to burn to get the exact same mileage out of a fuel combustion engine will also be more. Each EV vehicles has a greater carbon print to make and operate. Calculating what percent of green energy would be needed to offset EV inefficiency of creating and operating would be a more honest figure. Then to say EV are zero emission, which is completely false.
We could have cheap energy already if we wanted to. We just have to get our smartest people together to work on creating a super efficient solar panel.
Also wind turbines are usually turned off/locked and only a couple will be on because apparently there sometimes wont be a high enough demand or any orders for the company to sell the electricity to. Why dont they just turn them all on and store the energy or give it out for free??
I like Nuclear Fushion although it's not there yet to produce as much as nuclear fission plant, it currently produces as much a coal plant, but nuclear energy is best for now. But for cheaper almost reliable sources solar and wind i also like.
Nuclear, Geothermal, Hydroelectric, Solar thermal, and coal are vastly superior to solar and wind. Also, gasification and pyrolysis should be invested in. Manufacturing of solid panels is very harmful. Also, just using heat from the Sun passively can heat water and air in buildings.
Hi, Talking about Efficiency of generating Electricity from different sources of energy sounds great. Unfortunately, it is not that easy. Yes, we know the theoretical amount of energy in a ton of coal, oil or gas. But how do you compare a ton of Sunlight. ? ? . . How do you ship sunlight to a power station, how can you measure the relative energy available. ( Don't get me talking about kW/m² of sunlight energy, I can give you all the information you want on that. ) But it is the cost of collecting that Solar and Wind energy, not efficiency that counts. . . . Now you appear to have forgotten how to get Solar energy at night time. ! . . . Woops.! Now you start to get into Energy Storage. . . Now that is the big question, the big situation that is hampering all forms of variable energy generation. . .. To use Batteries is very, very, very inefficient, expensive and environmentally harmful, particularly the making and disposing of them. . . And how long before they need replacing. ? ? ? . . . . California had a big problem when their Energy Storage batteries required replacing in just two years. . . . . Basically you have vastly over simplified the problem and presented it all in a very, very distorted point of view
Once the testing phase of the first nuclear fusion power plant is finished in southern France it will be the best option by far. But it will require huge investments and it will take a long time until planet earth goes fully into nuclear fusion. For now the best option is CPV or concentrated photovoltaics. Also we need to improve the electricity storage batteries wether they’re made out of lithium or whatever~
The efficiency is not directly relevant for using solar for commercial energy generation, so comparing the efficiency to other types of commercial energy is pointless. No one cares if sunlight is wasted. The only thing that matters for commercial energy, is the price per kilowatt hour. Usually the more efficient it is, the lower the price per KWH as well, but not necessarily, and nothing even related to the cost, was even mentioned in this video. However, this is still an interesting development with solar tech.
Please compare the [costs of (construction + installation + maintenance)] / [hours of operational lifetime], for produce say something like 10TWh of electric energy in 50 years, distributed uniformly and constant in EVERY second of this period .
Then you will see that photo-electric power plants, ARE A FRAUD!!!
Not "clear" green-energy but clearly a..DEEP-RED one!
Watching this shows the need of having nuclear energy. Watch Pandora Promise completely than you decide. Most people will just ignore these facts, but the case against nuclear is not scientific. Its' fearmongering and if your not for nuclear than your for fossil fuels as this documentary shows.
what is the total picture cost? how much energy goes into coal and nuclear plants vs. solar plants? Land costs, costs of materials and energy to make the solution plus the manhours, plus the possible pollution clean up costs for the manufacturring process? I have yet to see any analysis in that fashion.
Uh, I protest efficiency to some degree. If you 100% efficiently capture all of the energy from wind, you get still air which can stratify or stagnate. If you do that with water, you get stagnant water.
Wind turbines are 90% efficient at the mechanical level.
Engines are 50% thermodynamically efficient, but are over 90% mechanically efficient and have to live with 64% thermal efficiency, but they provide us with a great standard of life when the carbon cycle is closed. The product of 50% and 64% is where their 30% efficiency comes from.
Concentrated solar is extremely efficient if we need sub 1000F thermal work done. I honestly see that as a promising technology because we can put them in sunny areas for a net cooling effect. It's more useful than solar panels in some aspects, though I will not deny that solar panels have their own niche.
The sun only shines during the day, and don't put out much juice when snowed on, no matter how efficient the panels are. The best source of power is methane gas (AKA propane, LPG, or natural gas), it is a byproduct of decomposing organic waste and therefore renewable and very inexpensive.
Nuclear Energy - of the future! These MSR power plants could be online in 10 years - maybe less...
Molten Salt Reactor ....
These work when the Sun won't shine. These reactors are safe, zero (or nearly zero) carbon and efficient - unless most everything else.
We should be looking at which source of energy is safest and healthy! Even with 20% efficiency of solar panels we can still provide all energy to the people! For example Nevada and Texas can provide all energy U.S. needs and U.S. have a lot of sunny states! Drinking water is shrinking so in 50 years hydroelectric power plants will be obsolete because water would be very precious! Solar, Wind, geothermal whenever possible should meet our energy needs, Nuclear power is pretty much safe but when something goes wrong like we have seen in Japan and Chernobyl price is very very high not only for environment but health as well but in those places that do not have enough solar, wind or geothermal they will need to use nuclear power instead of coal! In long term nuclear is still healthier and safer than coal plant!
does the 30% efficiency of solar panels and the 30% efficiency of nuclear energy produce equal amounts of energy??? Like do they both produce x amounts of joules or solar produces y amounts and nuclear produces z amounts and the only difference between them is that if the source of energy was wasted or not???
Only true close to green energy out there right now thats the most efficient?...water..and i don't mean hydro-electric either....Ever think about what makes up water?..Hydrogen and Oxygen...to of the cleanest fuels right now....The US Navy uses a system to turn salt-water into Oxygen so subs can stay underwater indefinitely,and the hydrogen is bled off as a waste gas...now think of this ...Building a plant along the coast that does this very same application and using both fuels..to run boilers to create steam to generate electricity...no emissions or heavy metals,no polluting the water,no waste by-products.Only uses a little oil to lubricate the moving parts....Does not require Nuclear anything....and you can also build a plant to create drinking water from the ocean and pipe it to places that don't have much water....Now chew on that for a bit.
Efficiency by itself is a poor comparison of the relative effectiveness of power sources for the electrical grid, since it ignores the important considerations of capacity factor, transmission infrastructure costs and the amount of land needed to supply the energy. Therefore, efficiency alone is a very poor argument for one power source over another, unless it is being used in a remote location apart from the grid. One thing is accurate. Hydro is the best in a lot of ways, but I’m not holding my breath for finding a new Niagara Falls or anyone flooding a huge valley to create a new Boulder dam.
Been hearing about high efficiency solar panels for years but they never seem to make it to market. Kind of reminds me of the 20 years away joke that is fusion reactors lol. Would absolutely love to see this stuff come to fruition but I’m not holding my breath... Someday... Eventually... Maybe....
Comparing efficiency across different energy sources makes no sense. In a coal plant, coal is a major expense and you want to make the optimal use of it. In solar, sunlight is free and the cost is in producing and deploying the panels. Higher efficiency is useful only if the production price is the same, which wasn't discussed at all on this video.
Solar is unreliable,Night,Winter,Clouds,rain,ect...................Its not producing more than it is producing..
Solar has to have a fossil fuels plants running to take up the slack ,if its night or the sun don't shy!!!!
Imagine a hospital or a factory that goes dark when solar stops producing ,several times a week!!
There is a company called Capstone Turbine which produces microtubines in the range of 30 kw to 30 mega watts which have the ability to use a wide array of fossil fuels such as natural gas and its associated flare gas from oil drilling, coal seam gas, kerosene , propane, methane from waste water treatment plants and cow or chicken feces that are put into a digester at farm sites , aviation fuel, recently the company is experimenting with hydrogen fuel in their combustion chambers for electrical generation . Capstone uses an air bearing turbine that obviously doesnt require lubrication so the exhaust is very clean and the heat recovered is effectively used to heat buildings water and air supply and utilised as steam in industrial applications like melting plastics or sterilization or commercial laundries furthermore heat can also be applied in an absorption chiller for cold water for refrigeration or air conditioning of buildings . When these turbines are used in all their heating and cooling capacities for factories, hotels, hospitals, high rises , schools, or apartment buildings...the energy efficiency can reach over 90 percent and meet the strictest standards set by the EPA.
If stock market fluctuations keep you awake at night, it would be better not to throw yourself into buying stock.
Investing to pay for higher education for your children, to finance a sabbatical or your retirement involve different investment strategies .
To invest in the stock market , it is strongly recommended you have an investment horizon of at least 5 years .
Tools and tips.
2. Define the analysis method.
A variety of analytical tools are available to gain a better grasp of the plethora of economic and stock market information.
The quantitative method analyzes some economic variables to detect trends.
Complementary tools exist as well. Contact your financial institution to find out what tools are available to you.
Tools and tips.
This video introduces the analysis tools and methods you will need to make informed investment decisions.
3. Formulate an investment policy.
This involves setting a direction for your portfolio. The direction is based on 4 principles.
Diversification means a decline by some securities is offset by an increase by others.
Tools and tips.
This video will provide 4 key tips to managing your securities well.
4. Evaluate and monitor your portfolio.
Some events may prompt you to change your portfolio to keep it in line with your investment policy.
Tools and tips.
5. Improve your knowledge.
The investment world is changing constantly, which means you must update your knowledge continually. Rather than being satisfied with what you already know, keep on learning .
Tools and tips.
Investment Portfolio Management.
Investment Portfolio Management is the art of putting together and managing various investments to meet specific goals. We will examine management strategy choices, asset allocation and investing strategies, and management of risk as they pertain to management of an investment portfolio.
Passive management is for investors willing to accept market returns. Using a fixed asset allocation with a portfolio comprised of index funds would be examples of passive management.
Asset Allocation Strategies.
Strategic Asset Allocation.