Greenhouse gases emissions and energy payback of large photovoltaic power plants in the northeast united states

2012 ◽  
Author(s):  
Annick Anctil ◽  
Vasilis Fthenakis
Keyword(s):  
United States ◽  
Greenhouse Gases ◽  
Power Plants ◽  
Northeast United States ◽  
Energy Payback ◽  
Greenhouse Gases Emissions ◽  
Photovoltaic Power

scholarly journals ENVIRONMENTAL AND FINANCIAL IMPACT ASSESSMENT OF NATURAL GAS COGENERATION PLANTS IN THE INDUSTRIAL SECTOR

2013 ◽  
Vol 12 (1) ◽  
pp. 03
Author(s):  
R. E. Silva ◽  
P. Magalhães Sobrinho
Keyword(s):  
Natural Gas ◽  
Greenhouse Gases ◽  
Power Plants ◽  
Ghg Emissions ◽  
Industrial Sector ◽  
Sao Paulo ◽  
São Paulo ◽  
Industrial Facilities ◽  
Greenhouse Gases Emissions ◽  
The Impact

This paper presents a case study on the impact of the use of natural gas cogeneration plants in industrial facilities from food companies established in the State of São Paulo, aiming at the financial and greenhouse gases emissions (GHG) analysis. It is proposed a comparison between two different energy supply models for two manufacturing plants, the first one based on electricity supply from local grid and steam from natural gas fired steam generators, and a second model that considers the industries energy needs being partially supplied through natural gas cogeneration plants which are installed in each one of the companies. This study indicates the differences of the financial results for supplying electricity and steam in both models proposed, describing the main variations and the reasons for those, besides identifying the main current tariff benefits in the legislation for the different classes of power plants and Energy Market. The summarized greenhouse gases inventory is presented for both industries as well, and a later assessment of environmental impact from the studied cogeneration plants in the overall GHG emissions in the two proposed scenarios is done. Finally, it is presented the relation analysis between electricity and steam supplying costs if compared with the greenhouse gases emissions levels for both proposed scenarios, and how public policies can act in order to guide emissions decreasing, since São Paulo State has promulgated a law in which establishes a major GHG emissions reduction to 2020.

scholarly journals Impact of a Warming Climate on Hydropower in the Northeast United States: The Untapped Potential of Non-Powered Dams

2017 ◽  
Author(s):  
Nima Ehsani ◽  
Charles J. Vörösmarty ◽  
Balázs M. Fekete ◽  
Eugene Z. Stakhiv
Keyword(s):  
Climate Change ◽  
United States ◽  
Rhode Island ◽  
Power Plants ◽  
Large Scale ◽  
Potential Evapotranspiration ◽  
Department Of Energy ◽  
Hydroelectric Power ◽  
Northeast United States ◽  
Hydropower Potential

A large-scale, high-resolution, fully coupled hydrological/reservoir/hydroelectricity model is used to investigate the impacts of climate change on hydroelectricity generation and hydropower potential of non-powered dams across the Northeast United States megaregion with 11,037 dams and 375 hydroelectric power plants. The model is calibrated and validated using the U.S. Department of Energy records. Annual hydroelectricity generation in the region is 41 Terawatt-hours (Twh). Our estimate of the hydropower potential of non-powered dams adds up to 350 Twh. West Virginia, Virginia, Pennsylvania, and New York have significant potential for generating more hydroelectricity from already existing dams. On the other hand, this potential virtually does not exist for Rhode Island and Delaware and is small for New Jersey and Vermont. Climate change may reduce annual hydropower potential from non-powered dams by up to 13% and reduce current annual hydroelectricity generation by up to 8% annually. Increased rainfall in winters and earlier snowmelt in springs result in an increase in regional water availability in December through March. In other months, reduced precipitation and increased potential evapotranspiration rates combined with reduced recharge from the shift in spring snowmelt and smaller snowpack result in a decrease in availability of water and thus hydroelectricity generation. This changes call for the recalibration of dam operations and may raise conflict of interests in multipurpose dams.

scholarly journals Estimates of greenhouse gases emissions reduction potential in Kazakhstan by 2030 in connection with its commitments in the Paris Climate Agreement

2019 ◽  
Vol 27 (1) ◽  
pp. 7-16
Author(s):  
Ivan S Istomin ◽  
Nikolai M Dronin
Keyword(s):  
Greenhouse Gases ◽  
Power Plants ◽  
Ghg Emissions ◽  
Industrial Sector ◽  
Emissions Reduction ◽  
Greenhouse Gases Emissions ◽  
Technological Modernization ◽  
Climate Convention ◽  
Paris Climate Agreement ◽  
Business As Usual

Prospects for achieving the Intended Nationally Determined Contribution of Kazakhstan in the framework of the Paris climate convention was assessed through projections of greenhouse gases (GHG) emissions of 31 large energy enterprises by 2030. The total CO2 emissions of these enterprises reach 86,9 million tons or 26,5 % of the country’s GHG emissions. For projection of the GHG emissions of the selected power plants three scenarios - “business as usual” (trend), “moderate modernization” and “full modernization” - were designed. “The unconditional target” would remain unachievable in the “business as usual” and even “moderate modernization” scenarios. However, the scenario of “full modernization” allows reaching “the unconditional target” with a good reserve. Moreover, this scenario allows reaching “the conditional target”. Our assessment of potential for reduction of the GHG emissions shows that Kazakhstan’s commitments in the Paris climate convention are very responsible. To meet these commitments technological modernization of the entire industrial sector of the country would be required. It could be achieved only by full mobilization of material and financial resources.

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