backtop


Print 113 comment(s) - last by heffeque.. on May 18 at 11:11 AM


The profitable nature of solar power in Spain has given rise to strange installation locations, such as this plant which towers over a cemetary.  (Source: AP)
Spain has found a controversial way to boost solar adoption

When it comes to solar power, the real dilemmas are efficiency and cost.  On the one hand, efficiency has steadily improved over the last couple decades to the point where it’s approaching the utility prices of other power generation methods.  Exotic technologies promise even greater gains.  However, the price of solar-generated power still remains at least five times as expensive as coal-power, the chief source of power in the U.S. (compared to the leading candidate, nuclear, which is approximately 1.5 to 2 times as expensive).

While solar adoption from a cost standpoint is unattractive, there's much debate over whether commercial adoption is needed to spur further research to propel solar into the realm of cost competitiveness.  While many nations like the U.S. and China have modestly taken this position, adopting solar at a moderate rate, one nation has fallen head over heels for solar -- Spain.

Spain is allowing solar and wind power plants to charge as much as 10 times the rates of coal power plants, making it possible for solar power installations to earn utilities big money.  On average, recent rate increases have raised solar charges to over 7 times the rates of coal or natural gas rates.   The costs are added onto consumers' power bills.

The results are mixed; while Spanish power bills are at record highs, the number of deployments is soaring.  Spain has 14 GW of solar power, or the equivalent capacity of nine average nuclear reactors, under construction -- the most of any nation.  Florida’s FPL Group Inc. and French Electricite de France SA are among the many jumping to build in Spain.

Gabriel Calzada, an economist and professor at Rey Juan Carlos University in Madrid, states, "Who wouldn’t want to enter a business that’s paid many times more than the market rate, and where the customer is guaranteed for life?"

By 2009, 42 percent of Spaniards energy bills -- approximately 95 euros ($127) on average -- will be provided by alternative energy.  Spanish law requires power distributors to buy all clean energy produced in the first 25 years of the plants' lives.  The government also recently raised the rate of Spain believes this sacrifice will pay off as fossil fuel resources become depleted and emissions standards tighten.

Karsten von Blumenthal, an industrial analyst at Hamburg-based SES Research GmbH states, "The guarantee is more attractive than what other countries offer.  Actually the U.S. has better space for solar, in the deserts of California and Nevada."

The U.S. meanwhile is also advancing thanks in part to President Obama's solar initiatives passed earlier this year as part of the federal stimulus legislation.  Over 6 GW of capacity is planned for the U.S.

Fred Morse, an official at the Washington- based Solar Energy Industries Association trade group and author of the first report to the White House on solar power (1969), says that the U.S. needs to adopt more incentives if it hopes to catch Spain.  He states, "The incentives, if implemented promptly and effectively, should greatly facilitate the financing of these plants."

One promising benefit of the Spanish solar boom is that it is increasing the number of plants utilizing new, potentially more efficient technologies like solar thermal or sterling engines.  Spain is limiting the number of photovoltaic plants (solar panel-based designs), but is giving out unlimited licenses for solar thermal and other alternative plants.



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

RE: Smart but not so...
By Solandri on 5/13/2009 4:00:08 PM , Rating: 2
quote:
1 - Solar Tech is improving very quickly. In another 3~5 years, it SHOULD be just as cheap as coal.

Current mass-market solar panels are about 15%-20% efficient. Solar has been able to piggyback on the enormous advances in semiconductor manufacturing by the computer industry, so I doubt you'll see much reduction in their manufacturing costs due to high adoption of solar. So you're left with efficiency as the only means of improving price.

If solar currently costs about 5x as much as coal, then making it just as cheap as coal would require panels which are 75%-100% efficient. The chances of us reaching that point in 3-5 years is virtually nil. I'd reckon we're several billion times more likely to be hit by a planet-killing asteroid in the next 3-5 years than for solar to reach the cost of coal.

quote:
2 - If its cheap, unlike a power plant (coar / nuke) Anyone can buy it and install it on their roof or their yard. Remember on DT - they're's tech that'll allow your windows to be solar collectors.

Without ginormous batteries to store that solar energy during the day (when you're at work) so you can use it at night (when there's no sun), the house will still need to be hooked up to the grid and we will still need coal/nuke power plants.

And windows that are solar collectors mean no (or less) light gets into your house. Kinda pointless to turn your windows into solar collectors if it forces you to turn the lights on inside the house during the day.

quote:
5 - if everyone has one, it can help re-charge their electric cars. Because AS OF NOW, eletric cars STILL require power from Coal / Nuke plants which generate pollution / waste.

I dunno about you, but I drive my car to work during the day. Installing a solar powered car recharging system at home isn't going to do me any good because my car isn't there most of the time the sun is up.

Don't get me wrong, I am all for alternate energy. But a lot of the proponents of solar are advocating it simply for the sake of it being alternate energy. They're putting very little thought into how practical it is. Of the alternate energy technologies I've seen, I would rank them from most practical to least as: hydro, geothermal, biofuels (use plants as solar collectors!), maybe fusion, and way down the list wind, and dead last solar.


RE: Smart but not so...
By greylica on 5/13/2009 7:06:40 PM , Rating: 2
Some Facts:

A 65cm X 100cm solar panel will only generate (in very sunny days) 85W X 12V~14V in 5~6 hours a day.
We have to use static sealed batteries to store that energy.
In My Apartment, I have 6 windows available to install those solar panels.
Then I could have in a sunny day, (assuming 85W x 5 H X 6 Panels) 510W/H X 12V~14V.
This will give me 2550W X 12V~14V per day at maximum.

Cost to implement (here, but converted to U$):
4950 U$.

Then, what can I do with this little amount of energy ?
Using 12V Led Lamp, equivalent to a 100W incandescent lamp
will consume 6W per lamp directly in 12Volts. I use 8 here, and will assume 2 Hours for each.
Then 96 W (I will assume 100). Using an inverter, will lost between 15~20% of the energy,
2550w-100w (Lamps) = 2450w -20% (inverter)= 1960W available in 127Volts
PC + Monitor (idle) 120W
PC + Monitor (Gaming, or rendering 3D anims (My work)) 300W
6~7 hours a day work

Now, the worst part...

Assuming 0,45 cents per KW Here,using 2550W (brute energy)
as directly generate by the panels each day
Will give me 1,1475 U$ per day in full usage
(all lamps, my PC )

30 days = U$ 34,425 each month

4950 U$ to implement divided to 34,425=143 month

WOW - Error, it´s not 4 years, it´s 12 years !

OK, but they raise the cost of energy every 2 years...

Using the last downgrade in my pocket they
did here in Brazil (20,19 %) will cut the
time to recover the cost near 7~8 years.

Those panels last 20 years, the rest of recoverable costs
will be used to battery maintenance when needed.
(every 5 years)

This way, I will have at least 8 Years
to recover my pocket, using those
speculative calculations.

But the pleasure to not give the money
to them... doesn´t have a price...


RE: Smart but not so...
By Keeir on 5/14/2009 4:28:20 PM , Rating: 2
quote:
Assuming 0,45 cents per KW Here,


Note, if thats 45 Euro Cents, thats pretty damn painful. I currently pay 7 Euro Cents per kWh. Since I doubt power production/distr. is really that much more costly where you are, remember that alot of that 0,45 cents will have to be recovered by the government/collecting agency in other ways.

Even assuming that huge replacement energy costs (I consider prices ranging upto 5x the US average to be very high indeed), you still have to have 8 straight years of very sunny days every single day. I also notice you don't factor in battery losses, nor the lost efficieny as time goes on, nor the oppurtunity cost/borrowing cost for the inital investment, nor any potential maintaince costs.

Even Solar Panel Companies show that for most locations, personal solar panel installations cost around 0.4 USdollars per kWh over 25/50 years with no opportunity cost nor maintaincence nor efficieny losses. (Note, this is not true everywhere. Some area of the US with High Sun, High Government Incentives, and High Electricity costs begin to have payback periods in the 15-20 year range)

quote:
But the pleasure to not give the money
to them... doesn´t have a price...


Your right, its a pleasure not to give them money. But it does have a price... a pretty steap one


RE: Smart but not so...
By highlandsun on 5/14/2009 12:07:58 AM , Rating: 2
You don't necessarily have to have batteries on-site, though that might make some other things easier. You can sell your excess electricity back to the utility companies during the day, and then buy it back at night. That's the ultimate in perfect investments - buy low, sell high - demand and prices are higher by day, lower by night...

By the way, thin film silicon solar panels are transparent. The notion that putting panels over all your windows is going to keep your house dark is pretty silly. In regions where there's a lot of sun exposure, where it's worthwhile to mount these panels, you're going to be doing yourself a favor because it will reduce the light from intense levels to moderate levels, and it will reduce heat buildup as well, thus lowering your cooling costs at the same time.

As for solar and recharging electric cars - I guess that's questionable. I think one of the ideal targets for solar installation is to cover over parking lots. That would help reduce the occurrence of urban heat islands as well. If your workplace is progressive, this may work out for you. And even if not, you still have the advantage of being able to sell any excess electricity back to the utility companies.

Maybe you think you've thought about this more than other people, but I don't think you've thought it through enough yet.


"So if you want to save the planet, feel free to drive your Hummer. Just avoid the drive thru line at McDonalds." -- Michael Asher














botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki