In February 2023, the U.S. Department of Energy (DoE) introduced a notice of proposed rule-making aimed at enhancing energy conservation standards for external power supplies (EPS). This new proposed standard, known as ‘DoE Level VII’, marks the latest step in the ongoing effort to reduce energy consumption and improve efficiency in electronic devices. At present there is no DoE VII implementation date, as the standards are just in their proposal phase.
What is DoE Level VII?
DoE Level VII is set to be a more stringent update to the existing energy efficiency standards applied to external power supplies. If deemed technologically feasible and economically justified, the regulation will require manufacturers to adhere to higher average efficiency levels and reduced no-load power consumption. The goal is to minimize the energy wasted by power supplies when devices are not actively being used or are in standby mode.
The new requirements focus on two main criteria:
- Higher Average Efficiency: Power supplies must achieve better efficiency across a range of loads, ensuring that they use less electricity during typical operation.
- Lower No-Load Power Consumption: Power supplies must consume minimal power when the connected device is not in use, reducing unnecessary energy waste when idle.
Impact on Manufacturers
The implementation of DoE Level VII, which would take effect two years after its final publication in the Federal Register, poses several challenges and opportunities for manufacturers of external power supplies:
- Increased Compliance Costs: Manufacturers will need to invest in research and development to redesign their power supplies to meet the new, stricter efficiency standards. This may involve adopting new technologies, using higher quality components, and optimizing the design of existing products to reduce energy loss.
- Innovation in Design: The push for greater energy efficiency is likely to drive innovation within the industry. Manufacturers will be encouraged to develop new solutions that not only comply with the regulations but also offer improved performance and reliability for consumers.
- Potential Market Differentiation: For companies that can quickly adapt to the new standards, DoE Level VII offers an opportunity to differentiate their products in the market. High-efficiency power supplies can be marketed as environmentally friendly and cost-saving options, appealing to eco-conscious consumers and businesses.
- Environmental Benefits: The new standards aim to reduce the overall energy consumption of electronic devices, contributing to lower greenhouse gas emissions and a smaller carbon footprint. By enforcing stricter regulations, the DoE hopes to make significant strides in energy conservation at a national level.
The Road Ahead
The DoE is currently evaluating whether the proposed standards of DoE Level VII are both ‘technologically feasible’ and ‘economically justified’. If implemented, this rule will mark a significant step forward in energy conservation for external power supplies, setting the bar higher for efficiency and environmental responsibility. As the industry prepares for these potential changes, manufacturers, consumers, and stakeholders will need to stay informed about the final decisions and adjust their strategies accordingly to meet the new requirements.
At NetBit, we can support several models with DOEVII capability including: NBS42F, NBC32A, NS24Q, NBS10B, NBS18G, NBS24N.
By pushing the boundaries of energy efficiency, DoE Level VII has the potential to reshape the landscape of external power supplies, leading to greener, more sustainable electronics across the board.

