By 2050, there could be 80 million metric tons globally of solar photovoltaics (PV) reaching the end of their lifetime, with 10 million metric tons in the United States alone — or the weight of 30 Empire State Buildings.
To maximize the value of solar PV materials and minimize waste, there is growing interest in sustainable end-of-life PV options and establishing a circular economy for energy materials. Most research thus far has focused on how to technically and economically recycle or reuse PV materials but does not consider how social behavior factors in.
NREL’s study modeled four agents: PV owners, installers, recyclers, and manufacturers. Agents choose to repair, reuse, recycle, landfill, or store an aging PV module under different scenarios, like varying recycling costs or policies.
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