Environment: Stewardship of Planet & Resources

In FY25, EnerSys completed our first fiscal-year-aligned Scope 3 greenhouse gas inventory, leveraging a refined methodology developed in collaboration with Tracera. Scope 3 emissions represent the impacts of activities not directly under our control—such as sourcing raw materials, product transport, business travel, employee commuting, and the use-phase of our batteries, which depends on the cleanliness of local electricity grids. Like many manufacturers, Scope 3 emissions significantly outweigh our direct Scope 1 and 2 emissions. As we refine our data and processes, we will continue to identify cost-effective and strategic ways to improve supply chain performance and support long-term value creation across our operations.

Spotlight

Advancing Energy Resilience with Onsite Solar

At our global headquarters in Reading, Pennsylvania, EnerSys has commissioned a 6.1-acre solar array comprising 9,568 panels and sized at 4 MW AC / 5 MW DC. As one of the largest corporate solar arrays in the state of Pennsylvania, this system will generate approximately 7.3 GWh of energy annually. The project reflects our continued commitment to energy security, cost management, and operational resilience, and supports our broader strategy to enhance facility performance while reducing exposure to energy risk.

Spotlight

Charting a Course Toward Energy Excellence: Our Climate Action Plan Roadmap

In FY25, EnerSys published a Climate Action Plan Roadmap outlining our strategic approach to improving operational efficiency and reducing emissions across our global footprint. Anchored by our net-zero targets—Scope 1 by 2040 and Scope 2 by 2050—this roadmap prioritizes high-impact initiatives such as facility electrification, energy intensity reduction, and strategic capital investments in renewable and resilient energy infrastructure. Developed by a cross-functional Climate Action Plan Committee, the Roadmap guides our decarbonization efforts, integrates sustainability into core business operations, and ensures accountability through executive oversight and performance-linked incentives. The plan so far has supported measurable emissions reductions, reinforcing EnerSys' position as an operational leader in energy strategy and manufacturing resilience.

Energy is essential to our operations, and we are continuously pursuing ways to operate more efficiently and reduce consumption. Improving energy performance not only minimizes our operational impact but also drives cost savings and performance gains. Across our manufacturing network and supply chain, we prioritize energy-efficient technologies and actively seek innovative methods to optimize usage and maximize value.

2030 ENERGY GOAL & PROGRESS

We are committed to reducing our energy intensity per kWh produced by 25% by FY30 compared to FY21. 

We have achieved an 19% improvement since FY21

Spotlight

Boosting Efficiency Through Smart Facility Upgrades

At our Warrensburg, Missouri manufacturing plant, EnerSys implemented an advanced HVAC controls upgrade that significantly improved energy performance. This project—recognized with a 2025 U.S. Department of Energy Better Project Award—is reducing annual electricity use by approximately 2.7 million kWh and natural gas consumption by 13,800 MMBtu. The improvements translated to annual cost savings of roughly $250,000 in utility incentives, and is avoiding an estimated 1,900 metric tons of CO₂e emissions per year. By optimizing temperature control systems and integrating intelligent automation, this upgrade demonstrates our focus on enhancing operational excellence and building a more resilient, cost-effective manufacturing infrastructure.

We use water in a variety of our processes and throughout our operations and EnerSys is committed to responsible water management across all facilities. From preparing electrolytes to battery formation and equipment cleaning, water supports key manufacturing processes. We are focused on improving process efficiency, reducing freshwater consumption, and expanding water reuse to minimize operational risk and protect this essential resource.

In FY25, total water usage at EnerSys increased to 952 megaliters—a moderate rise from the previous year—driven by higher overall production volumes and a shift in the types of batteries manufactured. Our facilities produced a more diverse mix of battery chemistries, each with different water intensity requirements, and changes in production ratios were a key contributor to the uptick in consumption. While we recognize the importance of water conservation across all operations, we place particular emphasis on reducing our footprint in regions facing water stress or other critical constraints. Despite the modest increase, our commitment to water stewardship remains strong: we expanded water reuse and recycling systems across key facilities, achieving a 17% increase in gallons of water reused and/or recycled from FY24 to FY25. These efforts underscore our ongoing focus on efficient and responsible resource management

2030 WATER GOAL & PROGRESS

We are committed to reducing our water intensity per kWh of storage produced by 25% by FY30.

We have achieved a 6% improvement since FY21

Spotlight

Sustainable Water Management in Action

In April 2024, EnerSys' Chongqing, China facility—situated in a region identified as high-risk for water stress—launched a water optimization initiative aligned with our commitment to the UN CEO Water Mandate. The project repurposes reverse osmosis (RO) reject water, previously discarded, for use in toilet flushing and cooling towers, conserving 15 to 20 cubic meters daily. The initiative not only addresses regional water scarcity but also delivers a positive return on investment, exemplifying how operational efficiency can align with environmental stewardship. The success of this project has prompted exploration of additional water reuse opportunities at the facility.