Seven Honda U.S. manufacturing plant locations have earned the 2025 U.S. Environmental Protection Agency (EPA) ENERGY STAR certification for Outstanding Energy Efficiency, demonstrating the commitment by Honda to reduce energy use and greenhouse gas emissions. The efforts taking place across Honda’s manufacturing plants also contribute to the company’s broader goal of decarbonizing its products and operations.
Since EPA began awarding ENERGY STAR certification to manufacturing plants through its Industrial Program in 2006, Honda facilities have been annually recognized for energy-efficiency leadership, with at least two facilities earning the distinction each year since the program began. Honda’s U.S. plants, including those building vehicles and power units, earning ENERGY STAR certification for 2025 include:
- Marysville and East Liberty Auto Plants in Ohio earned the award for the 20th consecutive year – receiving the designation every year since the EPA Industrial Program’s inception.
- Indiana Auto Plant achieved certification for the 14th year in a row.
- Anna Engine Plant in Ohio garnered its eighth award.
- Alabama Auto Plant’s engine plant received its seventh award.
- Honda Transmission Plant-Ohio received its sixth award.
- Honda Transmission Plant-Georgia earned its sixth award.
- Honda of Canada Mfg. also earned its seventh awards for its auto and engine plants.1
“The ability of Honda to earn U.S. EPA Energy Star certification is based on the continuous efforts of our associates in reducing energy use at our production facilities in America,” said Honda Environmental Department Manager Jeff Waid, “In addition to energy efficiency, we are very proud of our commitment to minimize waste and water use as part of our comprehensive approach toward reducing environmental impact.”
Honda Green Factory Initiative
Building on the company’s longstanding environmental commitment, Honda established its Green Factory initiative in 2021 to address the environmental impacts of manufacturing, including water and energy use, waste, and emissions at its facilities. New efforts include:
- Repairing compressed air leaks
- Installing a solar walkway for pedestrian travel
- Paint oven modifications to reduce natural gas usage
- Replacing gas heat sources with electric heat pumps
- Recovering and utilizing waste heat to reduce natural gas usage
- Paint Reverse Osmosis water recovery
- Cooling tower upgrades
- Boiler control upgrades
Honda has also completed many decarbonization projects at its manufacturing facilities. Recent electrification projects include the implementation of:
- Electric boilers
- Electric Arc Furnace
- Electric Regenerative Thermal Oxidizer (RTO)
- Electric forklifts
- EV charging stations
Additionally, Honda has implemented carbon reduction initiatives by shifting to low-carbon energy sources and covering more than 80% of the electricity used in its North American manufacturing operations through long-term virtual power purchase agreements (VPPAs) for renewable wind and solar power.
ENERGY STAR certification is awarded to plants in the top 25th percentile of all plants in the nation with regard to energy performance. The award is based on energy used per unit produced. ENERGY STAR was introduced by the EPA in 1992 as a voluntary, market-based partnership to reduce greenhouse gas emissions through energy efficiency. To date, tens of thousands of buildings and plants across all 50 states have earned the ENERGY STAR.
For more information about ENERGY STAR Certification for industrial facilities, please visit energystar.gov/plants.
