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Title: Economic viability of thin-film tandem solar modules in the United States

Journal Article · · Nature Energy
 [1];  [1];  [2];  [3];  [1];  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. First Solar Inc., Santa Clara, CA (United States)
  3. Siva Power, Santa Clara, CA (United States)

Tandem solar cells are more efficient but more expensive per unit area than established single-junction (SJ) solar cells. To understand when specific tandem architectures should be utilized, we evaluate the cost-effectiveness of different II–VI-based thin-film tandem solar cells and compare them to the SJ subcells. Levelized cost of electricity (LCOE) and energy yield are calculated for four technologies: industrial cadmium telluride and copper indium gallium selenide, and their hypothetical two-terminal (series-connected subcells) and four-terminal (electrically independent subcells) tandems, assuming record SJ quality subcells. Different climatic conditions and scales (residential and utility scale) are considered. We show that, for US residential systems with current balance-of-system costs, the four-terminal tandem has the lowest LCOE because of its superior energy yield, even though it has the highest US per watt (US W–1) module cost. For utility-scale systems, the lowest LCOE architecture is the cadmium telluride single junction, the lowest US W–1 module. As a result, the two-terminal tandem requires decreased subcell absorber costs to reach competitiveness over the four-terminal one.

Research Organization:
Stanford Univ., CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
EE0004946; EE0006707; EEC-1041895
OSTI ID:
1579842
Journal Information:
Nature Energy, Vol. 3, Issue 5; ISSN 2058-7546
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 54 works
Citation information provided by
Web of Science

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Cited By (7)

A Cost Analysis of Fully Solution-Processed ITO-Free Organic Solar Modules journal November 2018
Four‐Terminal Perovskite on Silicon Tandem Solar Cells Optimal Measurement Schemes journal April 2020
Electrodeposition of crystalline silicon films from silicon dioxide for low-cost photovoltaic applications journal December 2019
Synthesis cost dictates the commercial viability of lead sulfide and perovskite quantum dot photovoltaics journal January 2018
Irradiance and temperature considerations in the design and deployment of high annual energy yield perovskite/CIGS tandems journal January 2019
Roadmap for cost-effective, commercially-viable perovskite silicon tandems for the current and future PV market journal January 2020
Meeting Global Cooling Demand with Photovoltaics during the 21st Century text January 2019

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