Seven Honda U.S. Manufacturing Plants Receive EPA ENERGY STAR Award

Seven Honda plants in the U.S. earned EPA ENERGY STAR certification for 2025, highlighting energy efficiency and emissions reduction efforts across the company’s North American manufacturing operations.

Seven Honda manufacturing plants in the United States have earned the U.S. Environmental Protection Agency’s ENERGY STAR certification for 2025, recognizing their outstanding energy efficiency and continued efforts to reduce energy consumption and greenhouse gas emissions across the company’s production operations.

Among the facilities honored are the Marysville Auto Plant and East Liberty Auto Plant in Ohio, both of which have received the certification for the twentieth consecutive year. The two plants have been recognized every year since the EPA introduced the ENERGY STAR industrial certification program in 2006.

The full list of recognized facilities also includes the Indiana Auto Plant, the Anna Engine Plant in Ohio, the engine plant at Honda’s Alabama manufacturing facility, as well as two transmission facilities — Honda Transmission Plant-Ohio and Honda Transmission Plant-Georgia.

ENERGY STAR certification is awarded to plants that rank among the top 25 percent of their industry in energy performance. The evaluation is based on the amount of energy used per unit produced, allowing regulators to compare facilities regardless of their size or production volume.

In addition to the U.S. sites, Honda manufacturing plants in Canada also received ENERGY STAR certification for 2025. Certification for Canadian industrial facilities has been available since 2018 through cooperation between the U.S. EPA and Natural Resources Canada.

The recognition reflects Honda’s broader effort to reduce the environmental impact of its manufacturing operations. In 2021 the company introduced its Green Factory initiative, a program designed to address energy use, water consumption, waste generation and emissions across production facilities.

As part of these efforts, Honda plants have implemented a variety of efficiency projects. These include repairing compressed-air leaks, modifying paint ovens to reduce natural gas consumption, installing electric heat pumps to replace gas heating sources and recovering waste heat to improve overall energy performance. Water recycling systems such as reverse-osmosis technology have also been introduced in paint operations.

At the same time, Honda has begun electrifying key manufacturing processes. Recent projects include the deployment of electric boilers, electric arc furnaces, electric regenerative thermal oxidizers, electric forklifts and EV charging stations within production facilities.

Another major component of the company’s strategy is the increased use of renewable energy. Honda reports that more than 80 percent of the electricity used in its North American manufacturing operations is now covered through long-term virtual power purchase agreements for wind and solar power.

These manufacturing initiatives are part of Honda’s wider environmental roadmap focused on decarbonization, clean energy and resource circularity. The company has also stated that it aims for battery-electric and fuel-cell vehicles to account for 100 percent of its global automobile sales by 2040, while continuing to expand electrification across its product lineup.