Document Type : Original Article


1 Department of Power Grid Planning, Zanjan Regional Electric Company, Zanjan, Iran.

2 Department of Electrical Engineering, University of Zanjan, Zanjan, Iran.


Electricity generation through renewable energy sources such as wind energy has been growing in recent years due to several reasons including free and infinite resources as well as their considerable impact on the reduction of fossil fuels consumptions as well as CO2 emissions. This paper aims to assess the impact of grid-connected large-scale wind farms in a region located in Iran, on the reduction of natural gas as well as gasoil fuel consumptions in heat-cycle power plants and their related CO2 emissions as a practical case study. The wind farms under study comprise about 51% of the total grid connected capacity of wind power generation in Iran by the end of March 2021. The total energy yielded by the studied wind farms are first extracted over a two-year period from April 2019 to March 2021 based on a detailed practical data and then, its impact is investigated on the reduction of natural gas and gasoil consumptions in a real heat-cycle power plant due to its practical fuel intake data. Finally, the reduction of CO2 emission is calculated as the result of reduction in the natural gas and gasoil consumptions of the considered heat-cycle power plant. The results of this practical case study well demonstrate the effective role of wind farms energy yields on the reduction of fossil fuels consumption in heat-cycle power plants and thus, the significant reduction of CO2 emission as one of the most crucial aspects of decarbonization and fossil fuel phase out plans.


[1] Gisela Mello, Marta Ferreira Dias, and Margarita Robaina, "Wind farms life cycle assessment review: CO2 emissions and climate change," Energy Reports, pp. Pages 214-219, 2020.
[2] "Satba. Iran Renewable Energy and Energy Efficiency Organization," [Online]. Available:
[3] R. Saidur, N.A. Rahim, M.R. Islam, K.H. Solangi, "Environmental impact of wind energy," Renewable and Sustainable Energy Reviews, Vol. 15, pp. 2423-2430, 2011.
[4] J. Scott Greene and Mark Morrissey, "Estimated Pollution Reduction from Wind Farms in Oklahoma and Associated Economic and Human Health Benefits," Journal of Renewable Energy, 2013.
[5] Joseph Wheatley, "Quantifying CO2 savings from wind power," Energy Policy, Vol. 63, pp. 89-96, 2013.
[6] C. L. Anderson and J. B. Cardell, "The Impact of Wind Energy on Generator Dispatch Profiles and Carbon Dioxide Production," in 45th Hawaii International Conference on System Sciences, Maui, HI, USA, 2012.
[7] Gisela Mello, Marta Ferreira Dias, Margarita Robaina, "Wind farms life cycle assessment review: CO2 emissions and climate change," Energy Reports, Vol. 6, pp. 214-219, 2020.
[8] Do Thi Hiep, Clemens Hoffmann, "A power development planning for Vietnam under the CO2 emission reduction targets," Energy Reports, Vol. 6, No. ISSN 2352-4847, pp. 19-24, 2020.
[9] Pejman Bahramian, Glenn P. Jenkins, and Frank Milne, "The displacement impacts of wind power electricity generation: Costly lessons from Ontario," Energy Policy, Vol. 152, No. ISSN 0301-4215, 2021.
[10] Alberto Boretti and Sarim Al Zubaidy, "Reducing CO2 emissions to a sustainable level in the Bahamas islands," Current Research in Environmental Sustainability, Vol. 3, No. ISSN 2666-0490, 2021.
[11] Simon P. Neill and M. Reza Hashemi, Fundamentals of Ocean Renewable Energy, Elsevier Ltd. ISBN: 978-0-12-810448-4, 2018.
[12] G.L. Johnson, "Wind Energy Systems," Manhattan, Electronic Edition, 2006, pp. 61-70.
[13] J.M. Pedraza, Conventional Energy in North America: Current and Future Sources for Electricity Generation, Elsevier Inc. ISBN: 978-0-12-814889-1, 2020.
[14] "Zanjan Regional Electric Co.," [Online]. Available:
[15] Dan-Teodor Bălănescu and Vlad-Mario Homutescu, "Performance analysis of a gas turbine combined cycle power plant with waste heat recovery in Organic Rankine Cycle," Procedia Manufacturing, Vol. 32, ISSN 2351-9789, 2019.
[16] "U.S. Energy Information Administration," [Online]. Available:
[17] "Tpph. Iran Thermal Power Plant Holding," [Online]. Available: Site Pages/ MainPage.aspx.
[18] "persian holding," [Online]. Available:
[19] "Iotcco. Iranians Oil Testing and Consulting Co.," [Online]. Available: https://
[20] "Oil-price: The No.1 Oil Price Source," [Online]. Available:
[21] "Ministry of Natural Resources Canada," Available: