Energy payback time and carbon footprint of commercial photovoltaic systems

2013 ◽  
Vol 119 ◽  
pp. 296-305 ◽  
Author(s):  
M.J. (Mariska) de Wild-Scholten
Keyword(s):  
Carbon Footprint ◽  
Photovoltaic Systems ◽  
Energy Payback ◽  
Payback Time ◽  
Energy Payback Time

scholarly journals Life cycle energy use and environmental implications of high-performance perovskite tandem solar cells

2020 ◽  
Vol 6 (31) ◽  
pp. eabb0055 ◽  
Author(s):  
Xueyu Tian ◽  
Samuel D. Stranks ◽  
Fengqi You
Keyword(s):  
Life Cycle ◽  
Carbon Footprint ◽  
Environmental Performance ◽  
Large Scale ◽  
Greenhouse Gas Emission ◽  
Form Factors ◽  
Environmental Implications ◽  
Energy Payback ◽  
Payback Time ◽  
Energy Payback Time

A promising route to widespread deployment of photovoltaics is to harness inexpensive, highly-efficient tandems. We perform holistic life cycle assessments on the energy payback time, carbon footprint, and environmental impact scores for perovskite-silicon and perovskite-perovskite tandems benchmarked against state-of-the-art commercial silicon cells. The scalability of processing steps and materials in the manufacture and operation of tandems is considered. The resulting energy payback time and greenhouse gas emission factor of the all-perovskite tandem configuration are 0.35 years and 10.7 g CO2-eq/kWh, respectively, compared to 1.52 years and 24.6 g CO2-eq/kWh for the silicon benchmark. Prolonging the lifetime provides a strong technological lever for reducing the carbon footprint such that the perovskite-silicon tandem can outcompete the current benchmark on energy and environmental performance. Perovskite-perovskite tandems with flexible and lightweight form factors further improve the energy and environmental performance by around 6% and thus enhance the potential for large-scale, sustainable deployment.

scholarly journals Real Energy Payback Time and Carbon Footprint of a GCPVS

AIMS Energy ◽  
2017 ◽  
Vol 5 (1) ◽  
pp. 77-95 ◽  
Author(s):  
Miguel de Simón-Martín ◽  
◽  
Montserrat Díez-Mediavilla ◽  
Cristina Alonso-Tristán
Keyword(s):  
Carbon Footprint ◽  
Energy Payback ◽  
Payback Time ◽  
Energy Payback Time

Economic and Environmental Assessments of Two Installation Types of Photovoltaic Systems in Shanghai

2014 ◽  
Vol 672-674 ◽  
pp. 44-47
Author(s):  
Xin Fang Wu ◽  
Yong Sheng Liu ◽  
Juan Xu ◽  
Xiao Dong Si ◽  
Wei Lei ◽  
...  
Keyword(s):  
Net Present Value ◽  
Environmental Benefit ◽  
Pv System ◽  
Pv Systems ◽  
Energy Payback ◽  
Payback Time ◽  
Energy Payback Time ◽  
Negative Impacts ◽  
Investment Subsidy ◽  
Electricity Tariff

This paper mainly analyses a BAPV system of 3kWp and a BIPV system of 10 kWp in Shanghai, China. Net present value (NPV) and the payback time (Pd) as the parameters to determine the profitability of the system based on some actual measured data. As there are two subsidy policies in China, including the initial investment subsidy and PV electricity tariff subsidy. The variations of NPV and Pdwith the initial investment subsidy and PV electricity tariff subsidy are researched. Analysis results indicate both the systems have a good economic benefit. Since the manufacturing, utilization and recycling periods of PV systems can lead to negative impacts on the environment. Environmental impacts by both the systems are also evaluated in this paper by the energy payback time (EPBT) and greenhouse-gas payback time (GPBT). Results show both the systems have a good environmental benefit, PV technology and PV system are sustainable.

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