http://www.energycentral.com/centers/news/daily/article.cfm?aid=10537662

We will be very pleased to know the size  in MW of this plant in Japan. The attachment shows present cost in the field and the position in Srilanka. Is the price higher in Japan? Why not use the Mamoso;ar panels, Definitly solar radiation is less in Japan compared to the tropics like Srilanka.

Power and energy crisis in the global  scenario,  aggravated further by steep rises  in price of crude Oil  and Coal and it’s rapid increase in consumption, has been compelling  countries to focus on developing alternate sources of energy for industrial, commercial and household sectors. Solar power, Wind power, Bio-gas and Firewood has been known to be the main Alternate sources of energy

     Solar Cell Energy can partly meet the energy requirement of the industrial, Domestic and Commercial sectors and seek carbon credits under the CDM. (The Clean Development Mechanism) http://en.wikipedia.org/wiki/CDM  

Estimated revenue from 1.0MW Solar power plant, with an annual emission reduction of about 7,000t CO2 eq, would be, about US $210,000 per year at the rate of US$ 30 per tCO2, the present rate in UK. This rate could soon increase to $200 per ton CO2 as per the forecast. Please see slide #7 http://www.iea.org/Textbase/techno/etp/ETP_2008.pdf

 World will need about 50GW/year of Solar Energy from 2010 to 2050 to meet       -50% energy related CO2 in 2050, compared to 2005. 

  Modern Thin Film Printable Nanosolar cells cost only $1/Wp

http://www.nanosolar.com/blog3/

http://www.popsci.com/popsci/flat/bown/2007/green/green_animation.html

http://www.popsci.com/popsci/flat/bown/2007/green/item_59.html

http://www.popsci.com/popsci/flat/bown/2007/image_116.html

Nanosolar has made great progress as it has faced and apparently surpassed many barriers so far. However, they are still facing the most important barrier, which is the old electric power paradigm centered on Central Generation. There is a strong barrier against the development of the resources of the demand side and its first applications are supply side applications.

   This price compares well with the Coal Power station construction cost which is now very much higher than $1000/kW. Solar cells have no running or operational cost unlike the coal plant where the cost of Coal is now exceeding $170/short ton to bring same  Coal Plants only converts about 35% of the heat in coal as electricity and balance is sent as heat to atmosphere together with the polluting green house gases like CO2 which further heats up the earth. The plants consume water as well. There is the problem of release of mercury into the atmosphere as well as SO2 if not properly controlled. Controlling will make the plant more expensive. This will lead to all the problems of Global Warming Acid Rain, Ice melt, Swelling of sea levels, Cyclones and Floods etc. as per latest IPCC report.     http://www.ipcc.ch/ 

http://en.wikipedia.org/wiki/IPCC_Fourth_Assessment_Report

      The Solar cell Electricity even though not dispatchable and will not be available at the present system peak time in the nights,  but will bring about Distributed Generation. This will help the homes to reduce there bills Very soon these Alternate sources will become the Main Stream Power.  This distributed Generation by Solar will also bring down theTransmission and Distribution   The Solar cell Energy cost is now said to be just $0.05/kWh,   http://www.sunrgi.com/index.html  in US

All this demonstrates that cutting emissions by 50% by 2050 is achievable but tough. We would need to achieve very large improvements in efficiency. We would need to substantially de-carbonise power generation. And we would need to make an eightfold reduction in the carbon intensity of transport. Must go for electric vehicles even hybrids

Of course, if we can succeed in this we could also make a big contribution to energy security. Significant energy efficiency improvements have already been made but a lot of potential remains. For example, if the newly built coal-fired units were of the state of the art it would be possible to reduce of CO2 emissions. But it will be extremely costly like $3500/kW for construction.

 The Paris-based International Energy Agency issued a thick report recently saying that would require policies tough enough to push the price of a permit to emit a ton of CO2 up to $200. (Today, prices are roughly $40 in Europe,)

Decarbonising the power sector will also be essential. This can be achieved through renewable, Nuclear power, and the capture of CO2 emissions from Coal or Oil plants. There is a degree of choice, for each country, as to the balance of these technologies that one can choose. But action is needed urgently, and the costs are substantial. The primary scarcity facing the world is not of natural resources nor money, but time and the Political will. The city sitting on top of oil is going green in Dubai

http://en.wikipedia.org/wiki/Masdar_City