China Adopts New Efficiency Standard for Power Supplies

The new standard is expected to avoid 62 million tons of CO2 emissions by 2040 and marks a pivotal update in energy performance regulations within the industrial sector.

In January 2025, China introduced a new minimum energy performance standard (MEPS) for power supplies. The policy, titled "Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for AC-DC and AC-AC Power Supplies" (GB 20943-2025), will take effect on February 1, 2027, replacing the existing standard (GB 20943-2013). This update represents a pivotal step in enhancing energy performance regulations within the industrial sector.

This revised standard substantially expands the regulatory scope by including additional product categories and extended power capacity ranges, while integrating embedded power supplies into the framework for the first time. Aligned with the European Union’s latest minimum energy efficiency requirements of power supplies, GB 20943-2025 introduces a globally pioneering specification for Grade 1 no-load power consumption, establishing a stringent threshold of 0.05W to 0.075W.

This MEPS is projected to result in a cumulative reduction of 62 million tons of CO2 emissions by 2040.

CLASP supported this policy through technical analyses of international standards, including comparative studies of China-EU external power supplies and China-US embedded power supplies.