Japan Passes Law Requiring Solar Panel Disposal Plans to Support Recycling Growth

Japan’s parliament has approved new legislation requiring large-scale solar power operators to prepare and submit disposal plans for end-of-life solar panels, as the country prepares for a sharp increase in photovoltaic waste over the coming decades.

The bill was enacted after receiving approval from the House of Councillors, Japan’s upper chamber, following earlier passage by the House of Representatives. The legislation is intended to strengthen recycling efforts and reduce the volume of solar panels sent for final disposal.

Japan has rapidly expanded solar generation capacity since introducing renewable energy incentives more than a decade ago. As many early-generation solar installations approach the end of their operational life, policymakers are increasingly focused on managing the growing volume of retired panels.

According to government estimates, annual solar panel waste could reach approximately 500,000 metric tons by around 2040, roughly six times current levels. The new law seeks to establish a framework for handling that material before large-scale decommissioning begins.

Under the legislation, operators of utility-scale solar facilities will be required to submit disposal plans detailing the expected volume of discarded panels, along with the timing and methods of treatment and disposal. The government will review the plans and may issue guidance or corrective orders if they are deemed inadequate.

Operators that fail to comply with official orders could face penalties under the new framework.

The measure reflects a broader trend among governments seeking to address the environmental impacts of renewable energy equipment at the end of its life cycle. As solar deployment continues to expand globally, recycling and material recovery from photovoltaic panels are becoming increasingly important components of circular economy and resource management strategies.

The legislation does not specify recycling targets but is expected to support the development of collection, treatment and recycling infrastructure as larger volumes of retired panels enter the waste stream in the coming years.

Source: nippon.com

SUNSHINE Spotlight: Japan is establishing a regulatory framework for solar panel end-of-life management as photovoltaic waste volumes are projected to rise significantly by 2040.