Solar energy is a clean energy source which has zero carbon dioxide emissions. You can say approximatelly that there is no impact on the emissions from the solar energy.

Thanks Sir,

Actually, I need to give reference of zero Co2. Can you please share a link of any article or research to refer it in my research study. 

Hope the following links may help you

http://www.nrel.gov/docs/fy13osti/56487.pdf

http://spectrum.ieee.org/green-tech/solar/solar-energy-isnt-always-as-green-as-you-think

Thanks, Sir Pavan Kumar

Evangelos A Bellos said that "You can say approximately that there is no impact on the emissions from the solar energy". Ok.

But, PV systems produces gas emission during their lifecycle. You should look at the articles about the Life-cycle assessment.

http://www.nrel.gov/docs/fy13osti/56487.pdf

http://www.seas.columbia.edu/clca/Task12_LCI_LCA_10_21_Final_Report.pdf

Yes of course there is production in the construction. Moreover, i said approximatelly because a small amount of electricity is used for the circulation, something with a very small impact on the emmissions. In the case of PV, the life cycle analyis is something important as you said.

You're right.

Also the life cycle Assesment on the CO2 emission during the production of IDU and solar storage batteries had shown that the resulting  value can also not be ignored which will add up to the net emission from solar energy generation.

Generation of Electricity from solar cells is emission free and it is a green power, that is correct. Associated power consumption for erection, installation, maintenance, from some other source for running solar power units is immaterial from emission point of view.  

• Radhashyam, When calculating emission factor for a particular energy generation, emissions as a result of the production and pretreatment of raw material for the generation of the energy are always included in the calculation and the net can hardly be zero. This is mostly done using life Cycle Assesment software.e.g; SIMAPRO software.

Thank you sir,Mohammed Alhassan for your information.Can you, sir, please quote the authority that gives guidelines to implement this scheme as mention by you? Because in solar power generation, raw material/fuel is sun's energy/ray just irradiating and energising  the collecting PV cells for power generation and non-polluting in nature for long run operation.

According to my calculations, to produce 1 kWh of electricity from solar PV, about 49 grams CO2 equivalent are produced. By comparison, to produce 1 kWh of electricity from a coal-fired power plant, 1,190 grams of CO2 equivalent is emitted.

I presented my results as invited professor at Koc University in Istanbul, Turkey under the Distinguished Lecture Series.

Hope this helps answer your question.

Professor Yehia Khalil

Yale University

USA

Thank you, Sir, Yehia F. Khali for your valuable feed back. You have certainly calculated the stated figures with some standard norms. For obvious reasons  this 49 grams /kwh solar power generation should get diminished from every  CO2 figures for power generation, keeping solar power emission at 0 (ZERO) level. 

Thank you Sir Yehia F. Khalil, for sharing such a valuable information. 

Kindly share your research article or study, so i will refer that in my research for 49 gram of Co2 please. 

Muhammad Omair,

Research Scholar,

Hanyang University, South Korea

Dear Mr Mohammad Omar,

    To deduct 49 gram of CO2  from emissions of all power generation sources to make solar power emission '0' is my personal opinion, as solar power is considered as the purest source of non-conventional energy. It is not neither a research work nor granted/advised by any other statutory body of office or govt. Thanks

Dear friend,

In case of solar PV  net emissions are  ~40 g CO2eq./kWh. 

For Solar thermal case only ~ 20g CO2eq/kwh emissions take place. This is because the manufacturing of solar PV components is highly energy intensive process.

I am attaching the source from where i  have taken mentioned values.