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Old 11th March 2015, 02:19 AM   #1
fas42 is online now fas42  Australia
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Default It just keeps getting better for Solar Cells

Just saw a story about this last night, UNSW researchers set world record in solar energy efficiency | UNSW Newsroom ... nice to see the local lads still leading the way, ... also, using remarkable heatsinking technology to keep the cells at optimum temperatures for energy conversion - all good, clever stuff, .
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Old 11th March 2015, 03:03 AM   #2
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What is this? I think you're talking about Solar System right?
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Old 11th March 2015, 07:57 AM   #3
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Where I live with frequently cloudy skies and long winter nights, solar is barely supplemental.

Still, 40% efficiency is good. I'd need lots of panels and battery storage. Wonder how much these panels will cost?
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Old 11th March 2015, 11:25 AM   #4
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In the UK solar panels are currently subsidised, not taxed.

Any surplus if it is sunny and you're not home can be fed into the grid and your electricity supplier will have to pay you for it so no need for battery storage.
Same goes for any electricity you might generate with a wind turbine or a water wheel.

Solar industry in Germany appears to be in rude health.
During 2010, '11 and '12 nearly a third of globally produced solar panels were installed in Germany.
Germany has 12 companies manufacturing panels there.
That includes industry giant Bosch (the worlds largest automotive supplier) which thankfully is 92% owned by a non-profit charitable trust.
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Old 11th March 2015, 02:06 PM   #5
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It's big on the island of Maui but the electric company has cut off the feeding of the grid so all the new instalments that expected a payoff period of around 10-12 years, now will not pay them off until the panels are below the 70% of original capacity, which is when the recommend replacement.
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Old 11th March 2015, 10:04 PM   #6
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I don't think Germany would follow suit as the article suggested.

Since the '90s renewable energy production (ie solar panels and wind turbines manufacture and installation) has created over 350 000 permanent and skilled jobs.
They won't risk those, it'd be too expensive. Also they are mostly in small to medium companies whose owners traditionally vote Christian Democrat (conservative) and whose workforce Social Democrats so it is not in the interest of either of the major parties to fiddle with that.

Fracking is banned in Germany. You are allowed to test drill but the use of chemicals at depths of less than 3000m (9 842Ft) is strictly forbidden at least until such time as it is scientifically proven beyond a shadow of a doubt that fracking is completely harmless and non-polluting. A wise decision in my view.
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Old 11th March 2015, 10:34 PM   #7
Ron E is offline Ron E  United States
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Problem is, the best solar cells you can actually buy at current are around 21% efficient. The cost premium for those over the typical 15-18% or so panels is not always worth it.
Solar Panel Comparison Chart
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Old 11th March 2015, 10:42 PM   #8
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I think the power utilities really hate PV hooked into their grid esp on consumers residences , they still have the same infrastructure and costs and yet have to buy energy back at retail prices.
sadly the peak energy needs at dusk aren't supported by PV. so in the end PV without some storage mechanism is a non sustainable! solution. Solar Energy's Duck Curve - IER
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Old 11th March 2015, 11:00 PM   #9
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The sensible thing is for the grid to start moving more strongly towards storage management, this type of thing ... Pumped-storage hydroelectricity - Wikipedia, the free encyclopedia
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Old 11th March 2015, 11:10 PM   #10
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Quote:
Originally Posted by Ron E View Post
Problem is, the best solar cells you can actually buy at current are around 21% efficient. The cost premium for those over the typical 15-18% or so panels is not always worth it.
Solar Panel Comparison Chart
Reading the OP article carefully there is filtering and concentration going on, these are not panels you just put on your roof.

Factoring out government subsidies in any alternative energy discussion has become impossible. A better place maybe for the spaceX guys to put up their own money.
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