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Three Ways to usefull link viagra uk Make Solar Cheaper than Coal

Solar power is magnificently exciting. Just lay down a sheet or a panel and buy levitra without a prescription every day, for the life of the device, you get free power. There are no fuel costs. No one is ever going to start charging $4 per gallon of sunlight. But, unfortunately, the size of the initial investment keeps the cost of solar generated power higher than the cost of coal.

{digg}{/digg}It's worth noting that, if you take into account the cheap soft viagra environmental costs of burning coal, solar power is already slightly more economically sound (according to an analysis by the IPCC.) But we're not taxing carbon (yet) so we've got to make solar power cheaper.

There are thousands of people working on that right now. But here are three of generic viagra mastercard the finest examples of companies that are working to bring solar power to grid parity.

Concentrate on the Silicon
The most expensive part of a traditional photovoltaic array is the silicon wafers. It's the same stuff that microchips are made out of, and it's in short supply. The solar industry eats up every ounce of the stuff that's being produced today, and so prices are skyrocketing. To solve this problem (and also the problem of the environmentally wasteful process of creating the silicon crystals) several people, including IBM and a small startup called Sunrgi are concentrating the sunlight thousands of times onto a extremely small solar panel. They decrease the amount of solar material needed by thousands of times, and produce just as much power.


The result is solar power that is nearly as cheap (if not as cheap) as coal and a VERY HOT piece of buying cialis without a prescription silicon. Thus the big problem with this technology. You have to keep the silicon cool, even with sunlight magnified 2000x on it. Otherwise the silicon will melt, and it's all over. Both IBM and Sunrgi are using techniques learned from the microprocessor industry to just try! canada cheap levitra keep their silicon cells cool. Both have working prototypes already and are hoping to go commercial in the coming year.

Beyond Silicon
Another solution to the problem of limited and expensive crystalline silicon is to just not use it. Which is why there are so many solar startups right now working on solar technology using non-crystalline silicon or other thin-film solutions. The real champion of the thin-film startups is Nanosolar, which has already broken out of the lab and into manufacturing.

Nanosolar prints it's mixture of several elements in precise proportions onto a metal film. The production is fast, simple and cheap, at least for now. Some fear that shortages in indium will bring a halt to nanosolar's cheap printing days. But if that fate can be avoided, Nanosolar, and other thin film manufacturers are already pretty far down the discount online levitra path to grid parity. Though they make some efficiency sacrifices when compared to crystalline silicon, they are so much cheaper to generic cialis usa produce that they might soon even beat coal in cost per watt.

The Case for Extreme Heat
While the first two options provide the most efficient path to solar electricity, but converting photons directly into electrons, a less efficient, though simpler, option might turn out to be the real coal-killer.

Simply by focusing hundreds or even thousands of mirrors onto a single point, several startups are hoping to create the kind of heat necessary to run a coal fired power plant...but without the coal. The heat would boil water which would then be used to turn turbines. The advantage of such a system is that there are already lots of steam turbines being produced for traditional power plants, and the rest of generic cialis next day delivery the technology just involves shiny objects and concrete.

One problem does present itself, however, when you start to try and make these things too hot. The material holding the women cialis boiler has to be able to withstand the extreme heat that these installations can produce. That kind of material, that won't melt or degrade under such extreme heat, can be quite expensive.

Nonetheless, Google-funded startup, eSolar, is saying that by modularizing the construction of these "concentrating solar thermal" power plants, they could be cheaper than coal today.

If Not Today...Then Tomorrow
As coal and gas have remained extremely cheap over the last fifty years, there's been very little pressure to best viagra innovate and move beyond that technology. But now, with natural gas prices increasing along with concerns about global warming, we're finally ready to innovate. And expansions in materials and nanotechnology are making the change even more interesting.

It's no longer a question in my mind of if we can get solar cheaper than coal, it's simply when, and whether another renewable energy, like geothermal or wind, will beat solar to the punch.

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Comments (14)Add Comment
Advances here, advances there.
written by The Food Monster, June 24, 2008
It is great to hear about solar advances, then wind power advances, with the competition, we will end up with lots of renewable energy and great prices.
written by Lou Grinzo, June 24, 2008
And how much more are we willing to pay to have electricity at night or on very cloudy days?

I'm as enthusiastic a supporter of solar as you'll find, and I agree 100% that these three versions of solar are very exciting, but you can't realistically talk about it being as cheap as coal unless you also include the cost of storage or are willing to live with some other technology (my favorite: geothermal) for nighttime power.
What about the tramadol rx free long term?
written by mark pomerantz, June 25, 2008
Getting solar cheap right now is great, but just trying to 5mg cialis canadian pharmacy meet today's demand is still not enough. There needs to be a paradigm shift to account for all of the energy the world will need in the future (ITS A LOT).
written by Bob Wallace, June 25, 2008
Indium is abundant. An ample supply source might not be. It's not been in high use and processing has not been a priority.

The indium supply problem seems to be much the same as was silicon for panels. Temporary.


Storage and solar.

First, thermal solar lends itself to storage. Just put the super hot water into an insulated container until it's needed.

There's a thermal solar plant being built in Spain which will have three hour storage. That will extend the output of the plant through the peak hour time period.

Solar (wind, wave) electricity can be stored inexpensively using pump-up hydro. Additionally one can use compressed air (two sites already use CAES), and vanadium flow batteries. Conversion to hydrogen for later generation use and flywheels are being tested.
solar thermal can be efficient
written by Alex, June 25, 2008
Most solar thermal ideas are in the 10-20% range, but it should be mentioned at least that the record on a module basis may still be dish-stirling solar thermal systems, at I believe 39% conversion.
written by chooky, June 25, 2008
Storage is not the purchasing levitra issue because solar is a perfect peak usage stopgap. We use more electricity at mid-day (factories) so utility companies have a difficult time making energy production at this time profitable. In other words a generator only working mid-day is not earning them money during the night. That's why some countries and states charge more for electricity in the day versus at night. Solar is perfect because it generates all it's electricity when it's most needed allowing utilities to not building an additional coal plant for example.

Having said that none of buy pfizer viagra online these technologies are anywhere near coal created electricity. And unfortunately I think only silicon based cells will get there. Other problems with things like thin film is that they don't last long. The payback on solar requires they are up and ordering viagra online running, maintenance free for 30 years. Silicon based cells are proven to just try! free viagra do this. It's unlikely thin film efficiency won't start degrading after 5 years.
written by Ali S., June 25, 2008
Has anyone figured out whether or not these things can be recycled after they have been damaged or gone to the dogs due to the elements? This also includes the prospects of the batteries that will store this energy. Right now battery and recycling just doesn't seem to be working. Because the last thing I want to find out is that I'm helping to create a brand new pile of unrecoverable trash.
written by Grace, June 25, 2008
Concentrator Photovoltaic systems could also help:
written by Windsor, June 27, 2008
Everyone keeps pumping NanoSolar. What about Ascent Solar? They print the CIGS on plastic in precise proportions which is then turned into a module through monolithic integration eliminating the assembly steps NanoSolar uses. They say they'll be able to match coal at 30MW/year, something NanoSolar needs 400MW/year production to do, and Norsk Hydro agrees with them.
Storage is simpler than you would think
written by Shai, June 29, 2008
Just use excess electricity to viagra sales in uk pump water into a high plain then at night time just use a turbine with the water to generate electricity. None of the problems you get with batteries and very cheap to build.
written by RS, July 02, 2008
Technology exists to store solar energy for three months, by storing it in molten salt. Check out
written by Uncle B, July 25, 2008
In the end, solar with flow batteries for nighttime power beats all! Nuclear power is irreplaceable for ships and subs. We must conserve it for these purposes. The remaining oil has irreplaceable applications and must be allocated for them. Coal exploitation is still at the primitive, ‘You burn it for heat’ stage, Come on, biology, chemistry and physics, modernize this wonder-fuel into something we can use safely! Wind is about to be revealed to the American people by the last great energy prophet, T. Boone Pickens. Using his genius, we will be able to adapt to using much less oil in a very comfortable manner. The South Western U.S. is currently being bought up by those ‘in the know’ financial people, and solar power is a modern reality, and our power grids are growing to buying viagra over the internet accomodate this huge free resource. Good news for us! Bad news for the oil barons! We will kick their asses good, they will never hi-jack another prosperous American economy. We don’t need to fight their (The Saudis) dirty Suni war either. We can survive very well on the oil we pump from our own lands. We have seen the generic viagra online price light, we have developed the technology and we are about to elect the government that will, in spite of the oil barons lobby, implement an America free from parasite oil nations.
written by Chez, November 13, 2008
yay for solar power!!! ;D it is helping our environment!!
I am for concentrated PV
written by Lester Fotovoltaico, March 04, 2009
I think that concentrated PV, especially small size modular systems have the potential to bring down the WP cost and to be deployed at the household level, which will put decision making into the hands of conscious families.

I think we are close to that point, as a host of companies approaches the market stage for their concentrated PV products, including Gree&Gold Energy, Cool Earth Solar, SOL3G, and SUNRGI.


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