DOE proposes new energy-efficiency standards for distribution transformers
The U.S. Department of Energy (DOE) proposed new energy-efficiency standards for three categories of distribution transformers.
Distribution transformers — a common sight on utility poles in neighborhoods throughout the country – are devices used to change the voltage of electrical power. These transformers lower the voltage of electrical power before distribution to the customer.
Current efficiency standards apply to liquid-immersed, low-voltage dry-type, and medium-voltage dry-type distribution transformers. DOE’s proposed rule would amend the energy conservation standards for all three categories. The new standards are designed to improve the resiliency of the power grid, lower utility bills, and reduce carbon dioxide (CO2) emissions. With the new standards, almost all transformers produced would feature amorphous steel cores, which are more energy efficient than those made of grain-oriented electrical steel.
“The Biden-Harris Administration continues to use every means available to reduce America’s carbon footprint while strengthening our security posture and lowering energy costs,” U.S. Secretary of Energy Jennifer Granholm said. “Efficient distribution transformers enhance the resilience of our nation’s energy grid and make it possible to deliver affordable electrical power to consumers in every corner of America. By modernizing their energy-conservation standards, we’re ensuring that this critical component of our electricity system operates as efficiently and inexpensively as possible.”
If finalized, the proposed standards would reduce U.S. CO2 emissions by 340 million metric tons over the next 30 years. Further, DOE expects the proposed rule to generate over 10 quads of energy savings and approximately $15 billion in savings to the nation from 30 years of shipments.
If adopted within DOE’s proposed timeframe, the new rule will come into effect in 2027.
The DOE will host a public meeting to solicit feedback on the proposed rulemaking from stakeholders on Feb. 16, 2023.
