Solar Power Goes to Extremes for 5 Cents per kWh
Xtreme Concentrated Solar Power: if a magnifying glass is like lightning to ants, this would be their atomic bomb.
We already know that concentrated solar power (CSP) is shaking things up in the solar industry. A subset within the industry is turning up the heat. “Extreme” Concentrated solar magnifies intense sunlight onto a solar cell, at temperatures that could melt it, to boost efficiency for less money.
The holy grail of renewable energy is not just efficiency but competitive pricing. Most consumers don’t want to wait 5-10+ years to earn back their investment in energy savings, assuming that they can afford solar. Never mind the added value of generating some of your own energy. Utility-scale facilities hinge not only on cost, but infrastructure. If you build your solar/wind farm in the desert, transmission lines may not come out to meet you. So when someone claims to have a cheap, efficient solar technology, people pay attention.
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Extreme Concentrated Solar stands out because it claims to be affordable and very efficient. Unlike solar-thermal (CSP), which utilizes the heat of the sun, this technology still converts light into power (photo voltaic). So many solar companies have attempted to reduce cost by rising to industrial scale, but this method takes the opposite approach. XCPV (extreme concentrated photo voltaic) uses very small solar panels combined into a module design, and modules are infinitely scalable.
The most recent announcement comes from Sunrgi, which claims its XCPV system will “produce electricity at a wholesale cost of 5-cents per kWh” (via news release). Their system magnifies sunlight 2,000 times at over 3,000 degree Fahrenheit onto a small, top-of-the-line solar panel, which dramatically boosts the amount of energy the panel can produce. Since the system is in a module, it can be as big or small as you want. The modules also track the sun throughout the day to maximize power output, and they’re upgradable. That means if better solar panels hit the market in the future (or if theirs do get fried after all), you can switch them out. Another feature Sunrgi claims is an impressive efficiency rating of 37.5%. For the uninitiated, that might not sound like much, but consider that the world record in February, 2008 was 31.25% using CSP – on an unusually sunny day. But the whole system hinges on its cooling mechanism, described only as nanotech “goop”, to prevent the solar panels from melting. And that technology is still “proprietary”. In other words, they haven’t actually made commercial product yet.
Before you let your hopes dash to the wind (another future technology!?), let me set you at ease. Sunrgi hopes to bring their product to market in about a year, so we’re not talking about pipe dreams. These guys are serious, and they’re out to make some money at 5 cents/kwh. But fortunately for us all, this technology is not new, and Sunrgi is not the first to point a magnifying glass at a solar panel. The Aussies beat us to it.
It started out as the Sunball in 2005, but soon evolved into the Suncube. The Suncube also concentrates solar energy with an efficiency rating over 30%. It’s a modular system that tracks the sun and appears less bulky than the Sunrgi system.
The system comes to us from Green and Gold Energy of Adelaide, Australia, but before I provide the link, let me disclaim. Apparently, if you believe the word on the street, the website is the personal baby of GG&E’s founder. He’s very proud of his GG&E site. More important is the product: not only is GG&E producing XCVP modules around the world, but they’ve already signed a deal with Emcore, who will provide concentrated solar cells with 20 year warranties. Partner groups ES Systems in Korea just secured $28 millions dollars more worth of Emcore solar cells. More importantly, GG&E is building a manufacturing facility, and their product is already on the market.
So the exciting thing about Extreme Concentrated Photo Voltaics is the combination of high efficiency with low price. By magnifying the power of the sun, these companies are pushing the envelope at a time when energy prices are high. But these ventures are not without risk. Inadequate cooling of of the solar cells could result in decreased performance or melting. There’s also hurdles facing solar energy; the least of which is investing in manufacturing infrastructure, and transporting product. But the magic number here is 5 cents/ kwh. Mike Chino of Inhabitat.com notes:
“Craig Goodman, president of the National Energy marketers Association, has stated that “Solar power at 5 cents per kWh would be a world-changing breakthrough. It would make solar generation of electricity as affordable as generation from coal, natural gas, or other non-renewable sources, without require and subsidy.””
(edit: fixed some spelling and clarified the title)
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1. In Illinois the birthplace of the A-bomb the utility company said in the 70’s that the energy prices for nuclear energy will be half of coal. After 25 years of nuclear energy over 80% (close to 90%) of the used capacity it never came down to less than 125% of the price of coal energy. They just closed down one nuclear plant and restarted a coal fired one in the last 2 years.
2. If you think countries of less than 30 million people will supply solar panels for the US demand, I have some prime land for sale on the moon (or Ft. Lauderdale).
1. In Illinois the birthplace of the A-bomb the utility company said in the 70’s that the energy prices for nuclear energy will be half of coal. After 25 years of nuclear energy over 80% (close to 90%) of the used capacity it never came down to less than 125% of the price of coal energy. They just closed down one nuclear plant and restarted a coal fired one in the last 2 years.
2. If you think countries of less than 30 million people will supply solar panels for the US demand, I have some prime land for sale on the moon (or Ft. Lauderdale).
I think it’s fantastic! These logistical issues about falling leaves and the sort are not show stoppers by any means. If that kind of thing would stop us, concerns about other forms of energy would have left us in the dark. Just take a deep breath, step back, and look at the big picture, the small details are just that, small details. The future is here, embrace it, a new dawn is upon us, think positive and make it real.
I think it’s fantastic! These logistical issues about falling leaves and the sort are not show stoppers by any means. If that kind of thing would stop us, concerns about other forms of energy would have left us in the dark. Just take a deep breath, step back, and look at the big picture, the small details are just that, small details. The future is here, embrace it, a new dawn is upon us, think positive and make it real.
I was very impressed with this product. I have been searching for more cost efficient solar power for my home. Power that would pay for itself in a shorter time frame.
The compact size is ideal.
I think you will find a market among average homeowners, of which there are many in the u.s., if the initial price of getting started is reasonable.
Right now when I think of the cost of solar vs. how long I will be in my home. Its out of balance.
My electric has skyrocketed to $300 plus mo.
Frankly, I would rather be paying off a new system of solar if both the system and related costs were cut in half.
See if you can pull that off. I have lots of friends honey!
I was very impressed with this product. I have been searching for more cost efficient solar power for my home. Power that would pay for itself in a shorter time frame.
The compact size is ideal.
I think you will find a market among average homeowners, of which there are many in the u.s., if the initial price of getting started is reasonable.
Right now when I think of the cost of solar vs. how long I will be in my home. Its out of balance.
My electric has skyrocketed to $300 plus mo.
Frankly, I would rather be paying off a new system of solar if both the system and related costs were cut in half.
See if you can pull that off. I have lots of friends honey!
whats the potential of using BiPVs in Africa.
is there anything we are not being told?
I will be really interested to know.
whats the potential of using BiPVs in Africa.
is there anything we are not being told?
I will be really interested to know.
@ Dan: you know, in some states farmers do lease their land for solar panels and wind farms. They let someone else pay for the equipment/ installation and get a cut of money from the energy produced. Florida you say? You’ve got some tasty tax benefits for solar down there; maybe it’s worth a look.
@ Fallblackberries: A lot of people share your exact concerns, so one company did some business innovation and got around the issue. Instead of selling solar panels, they lease them. That way consumers pay less and still reap the benefits, and the panels can travel with you to your new home. Check it out, run an internet search for “solar panel lease” or something similar.
Victor: I’d say there’s a lot of potential if you can get them over to Africa. The only problem I see with these products is that they’re still new and in limited supply.
There are a few solar products out there these days designed for homes or communities that are off grid and low on cash. Cleantechnica recently wrote about a solar cube, for example, but there are lots more.
Also, I could definitely see homemade innovations being used to boost production from old solar panels. Mirrors, etc. could point more light onto any given panel without the risk of melting it. Silicon panels in particular are long-lived and keep most of their efficiency even after 30+ years.
@ Dan: you know, in some states farmers do lease their land for solar panels and wind farms. They let someone else pay for the equipment/ installation and get a cut of money from the energy produced. Florida you say? You’ve got some tasty tax benefits for solar down there; maybe it’s worth a look.
@ Fallblackberries: A lot of people share your exact concerns, so one company did some business innovation and got around the issue. Instead of selling solar panels, they lease them. That way consumers pay less and still reap the benefits, and the panels can travel with you to your new home. Check it out, run an internet search for “solar panel lease” or something similar.
Victor: I’d say there’s a lot of potential if you can get them over to Africa. The only problem I see with these products is that they’re still new and in limited supply.
There are a few solar products out there these days designed for homes or communities that are off grid and low on cash. Cleantechnica recently wrote about a solar cube, for example, but there are lots more.
Also, I could definitely see homemade innovations being used to boost production from old solar panels. Mirrors, etc. could point more light onto any given panel without the risk of melting it. Silicon panels in particular are long-lived and keep most of their efficiency even after 30+ years.
I am not worried about the leafs or the fire, I am really worried about the birds… This flash light can bring a lot of damage to a whole life cycle. Think about a whole community with the roof on flash lights, they will have to change the route, and stop eating some animals, and this animals become a plague, or others become an agressive predator
I am not worried about the leafs or the fire, I am really worried about the birds… This flash light can bring a lot of damage to a whole life cycle. Think about a whole community with the roof on flash lights, they will have to change the route, and stop eating some animals, and this animals become a plague, or others become an agressive predator
I’m skeptical about the 37.5% efficiency rating. Crystalline PV modules lose ~.5% efficiency per degree Celsius above their rated output (standard test conditions at 25 degrees C. As the substrate heats up, the losses would be considerable. This is not a new idea as stated in a prior post. Also, modules would degrade far more quickly at these temperatures and replacement would eat into that 5 cents/kwh rating. With federal and state subsidies here in California the best plan of attack is still the standard crystalline module with a payoff of 7-10 years and a 50+ year lifespan.
I’m skeptical about the 37.5% efficiency rating. Crystalline PV modules lose ~.5% efficiency per degree Celsius above their rated output (standard test conditions at 25 degrees C. As the substrate heats up, the losses would be considerable. This is not a new idea as stated in a prior post. Also, modules would degrade far more quickly at these temperatures and replacement would eat into that 5 cents/kwh rating. With federal and state subsidies here in California the best plan of attack is still the standard crystalline module with a payoff of 7-10 years and a 50+ year lifespan.
Maybe I am missing someting here, but is the company claiming a new type of PV transducer?
If you have a module which collects energy from the sun (photons) over a given surface area and concentrates them via a lens onto a small transducer, then surely you would only get an efficiency gain over a conventional nultiple PV cells using the same collection area if either
a) the PV cell operated in a more efficient region of its characteristic transduction curve at the higher energy level
b) you used an alternate (more efficient) PV type which needs the higher energy level to function.
If the PV cells are ‘normal’ ones and a) above is true, then there is clearly a potential per module cost saving by reducing the number of cells used I guess, but I don’t get from this article what the essential advance claimed here is.
Maybe I am missing someting here, but is the company claiming a new type of PV transducer?
If you have a module which collects energy from the sun (photons) over a given surface area and concentrates them via a lens onto a small transducer, then surely you would only get an efficiency gain over a conventional nultiple PV cells using the same collection area if either
a) the PV cell operated in a more efficient region of its characteristic transduction curve at the higher energy level
b) you used an alternate (more efficient) PV type which needs the higher energy level to function.
If the PV cells are ‘normal’ ones and a) above is true, then there is clearly a potential per module cost saving by reducing the number of cells used I guess, but I don’t get from this article what the essential advance claimed here is.
The Aussies did not beat us to it. Amonix has been doing this for years.
The Aussies did not beat us to it. Amonix has been doing this for years.
what if the solar panels were part steel or steel with spray on type solar panels i believe this tecnology is out there and could possibly be intergrated just a thought
what if the solar panels were part steel or steel with spray on type solar panels i believe this tecnology is out there and could possibly be intergrated just a thought
This is exciting technology, but I suspect that these solar concentrators will be targetted at specific niche products rather than being available for general use for some time to come.
The reason is down to the installation. Get it wrong with a normal solar panel and at worst you’ll get decreased performance and less electricity than you may expect. Get it wrong with solar concentrators and you risk burning down your building…
For that reason, expect to see solar concentrators being used in specialist applications. Powering vending machines, or providing lighting to a bus stop canopy for example.
That doesn’t mean that we shouldn’t get excited about solar concentrators – we should. We just shouldn’t expect them to be the answer for every solar problem we have at the moment.
Meanwhile, if you really want to get excited about low cost solar – here is some exciting news: the trade price for amorphous solar panels in the Far East is now down to just over the $1 a watt mark. Competitively priced solar panels that can be used on normal household projects by enthusiasts is definately coming…
This is exciting technology, but I suspect that these solar concentrators will be targetted at specific niche products rather than being available for general use for some time to come.
The reason is down to the installation. Get it wrong with a normal solar panel and at worst you’ll get decreased performance and less electricity than you may expect. Get it wrong with solar concentrators and you risk burning down your building…
For that reason, expect to see solar concentrators being used in specialist applications. Powering vending machines, or providing lighting to a bus stop canopy for example.
That doesn’t mean that we shouldn’t get excited about solar concentrators – we should. We just shouldn’t expect them to be the answer for every solar problem we have at the moment.
Meanwhile, if you really want to get excited about low cost solar – here is some exciting news: the trade price for amorphous solar panels in the Far East is now down to just over the $1 a watt mark. Competitively priced solar panels that can be used on normal household projects by enthusiasts is definately coming…
Add a Peltier device to the bottom unit and get more energy from the temperature differential, increase your output another 10-20%. then send me one or two 🙂
Why not use the coolant for heating water and if it gets too hot ,run it through a radiator a large water tank would make a great heat sink ,one of the advantages would be that heating water consumes a great of electricity ,a two -fer ,if you will .
That is great. I invested in solar panels in 2010. I reduced my energy costs but fracking natural gas also drove electricity costs down. Now I am running bitcoin mining to get some money back