Recycling Technologies for Silicon Solar Modules

Recycling Technologies for Silicon Solar Modules

The objective of this project is to develop a ready-to-commercialize recycling process to recover materials from silicon modules: solar-grade silicon, lead, silver, tin, solar-quality glass cullet, aluminum, and copper. The focus is on a new chemical recycling process to recover solar-grade silicon, lead, silver, tin, and copper from silicon cells.

Upon completion, this project will deliver an optimized chemical recycling process for silicon solar cells extracted from modules. The optimized process will be the basis for designing and constructing a pilot plant for silicon module recycling at 100,000 modules/year in the U.S. which recovers solar-grade silicon, lead, silver, solar-quality glass cullet, aluminum, copper, and tin from silicon modules. This project will increase secondary materials recovery by about 0.2MMT, embodied energy savings of 22PJ, and GHG emissions reduction of 1.106MMT. Assumptions based on recycling 20% of the expected EOL solar panels in the U.S. in 2030.

Project Team:
Arizona State University (ASU), First Solar Inc., TG Companies LLC

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21-01-RR-5014

Design for RE-Solar

Design for RE-Solar

This traditional research and development REMADE proposal is to create a framework that addresses the knowledge gaps of RE-SOLAR design. The proposed framework will offer impact projections for future PV panel waste streams (globally and for the US) based on predictions of global PV growth, provide LCA of various PV designs, and demonstrate new concepts and innovation for the design of an industrial scale PV recycling plant. The proposal is a continuation of Project 18-01-DE-07.

Upon completion, this project will deliver PV in a circular economy (PV ICE) version 1.0.0 software tool with the capability to analyze embodied energy and equivalent carbon dioxide emissions given changes in Si PV technologies, new PV technologies such as tandem cells and perovskites, and effects of changing raw material sourcing or increasing recycled material in manufacturing; The tool will also be used to analyze reduced material consumption and the effect of open-loop versus closed-loop recycling on future CO2 emissions, energy, waste streams, and material economic value. This project will reduce primary feedstock by 1.08 million metric tons (MMT), 26.6 PJ energy reduction, 1.34 MMCO2e. Assumptions based on preliminary results of the exploratory project.

Project Team:
University of Pittsburgh, University of California-Irvine (UCI), National Renewable Energy Laboratory (NREL), First Solar, Alfred University, Yale University, Sunnking, Inc., Aluminum Association, Electronic Recyclers International (ERI)

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21-01-DE-5028

Development of an Industrially Relevant RE-SOLAR Design Framework

Development of an Industrially Relevant RE-SOLAR Design Framework

Solar modules are creating a major surge in e-waste because inadequate attention is focused on designing for recycling or reuse. This project provides a design framework of high-efficiency modules that can be economically recycled, recovered, remanufactured, and/or reused.

Project Team:
University of Pittsburgh, University of California-Irvine, National Renewable Energy Laboratory, First Solar

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18-01-DE-07