Three Examples of Why The Leanest Factories are Net Zero
With rising costs and growing sustainability concerns, more manufacturers than ever are seeking methods to improve efficiency and reduce their environmental impact.
For large manufacturers, this dual challenge has led to the development of two significant concepts: lean manufacturing and net-zero factories.
The integration of these practices today highlights the strong correlation between lean philosophy and sustainability, where efficiency gains are often environmental gains as well.
Lean manufacturing & Net Zero factories
Lean manufacturing is a systematic approach to minimising waste within a production process while ensuring the highest quality.
Originating from the Toyota Production System (TPS) in the 1950s, lean principles aim to enhance efficiency by reducing excess inventory, improving quality control and optimising production workflows.
In a lean factory, resources including time, materials and worker labour are used in the most efficient manner possible.
Non-value added activities are eliminated, processes and continuous improvement aka Kaizen, is pursued.
The desired result? a factory that boasts both market agility and overall cost-effectiveness.
The philosophy that underpins lean manufacturing inherently aligns well with sustainability, encouraging the minimisation of waste and the efficient use of resources.
These actions are essential to achieving net-zero emissions - and by extension net-zero factories.
Net-zero factories are manufacturing plants that balance the amount of greenhouse gases (GHGs) they emit with an equivalent amount of GHGs removed from the atmosphere, resulting in a net-zero carbon footprint.
Achieving net-zero status is a difficult and multi-faceted journey, with manufacturers investing in renewable energy sources, reducing emissions through energy-efficient practices and offsetting what remains through measures like carbon capture or tree planting.
Net-zero manufacturing takes a holistic approach to environmental responsibility, addressing scope 3 emissions from transportation, supply chain management and production disposal in addition to direct emissions from production.
As governments, customers and investors increasingly demand action on climate change, the adoption of this approach and the creation of net-zero factories is only accelerating.
In 2025, the most advanced manufacturers have brought lean production methods and sustainability targets together to create new efficiencies, better tackle waste and ensure regulatory compliance whilst balancing costs.
This is especially evident when we look at the net-zero factories of three influential global manufacturers: BMW, Schneider Electric and Nestlé.
Example 1: Schneider Electric
Schneider Electric, named 2024's most sustainable company by TIME Magazine and Statista, is a global leader in energy management and automation.
The manufacturer has four 'Sustainability Lighthouses' as designated by the World Economic Forum, the most of any company on the planet.
These factories are distinguished by their industry-leading reductions in Scope 1, 2 and 3 emissions, significantly advancing the circular economy.
Many of these factories are also net-zero factories. Among them is Schneider Electric's electronics factory in Wuxi, China which has been praised for its cutting-edge sustainability initiatives.
Achieving net-zero scope 1 and 2 emissions in 2022 - eight years ahead of target - this factory brings together lean manufacturing production techniques and sustainability objectives.
The factory has implemented an AI-powered eco-design, a closed-loop CO2 tracking system with suppliers and machine learning to optimise energy efficiency.
This enabled Schneider Electric to successfully reduce Scope 1 and 2 emissions at the site by 90%, scope 3 emissions by 65% and water usage by 15% within two years, creating the foundation for its net-zero status today.
The factory operates on 100% renewable electricity, sourced from both on-site solar panels and external green power suppliers.
It has further reduced its carbon footprint by implementing energy-saving technologies, optimising heating and cooling systems to minimise energy consumption.
The factory uses a just-in-time (JIT) inventory system to reduce waste, optimise material use and ensure efficient production scheduling.
Lean principles like value stream mapping and continuous improvement are applied to streamline workflows, eliminate non-value-added activities and enhance overall operational efficiency.
By reducing excess inventory and minimising unnecessary processes, Schneider Electricâs Wuxi plant not only increases productivity but decreases energy consumption and material waste.
This combination of lean practices with a strong sustainability focus allows Schneider Electric to reduce both its environmental impact and operational costs.
The Wuxi factory serves as a prime example of how manufacturers can achieve net-zero goals while improving efficiency and maintaining high-quality standards.
"The Wuxi campus and our other Sustainability Lighthouse facilities across the globe underscore our commitment to our sustainability goals how essential our supply chain operations are to realizing them," said Mourad Tamoud, Schneider Electricâs Chief Supply Chain Officer.
"Investing in the right technologies at scale and pace, investing in our peopleâs development and engaging with our partners, suppliers and customers is critical to making progress, not just in sustainability but also in operational efficiency, flexibility, agility and our customersâ experience in working with us.â
Example two: BMW Group
BMW Group, the global automotive manufacturer, has been a pioneer in combining lean manufacturing and net-zero goals.
This is especially prominent at its Leipzig plant in Germany, a plant that is central to BMWâs strategy to achieve net-zero emissions by 2050.
At the Leipzig site, lean manufacturing practices focus on reducing energy consumption, optimising production workflows and minimising material waste.
This extends far beyond direct production, with BMW Group continually evaluating how it can refine and improve its supply chain, waste handling, inventory management and procurement strategies.
The plant is known for its highly efficient production lines and energy-saving technologies, which include an energy-efficient heating and cooling system, as well as state-of-the-art automation to reduce energy usage during production.
In addition, the Leipzig plant operates with a commitment to using renewable energy, sourcing electricity from wind and solar power.
The lean principles at this plant help reduce emissions directly from production while enabling BMW to achieve significant reductions in operational costs.
By reducing material waste through lean processes like value stream mapping and JIT inventory, the Leipzig plant is a model of how lean and net-zero practices can be integrated in the automotive industry.
Example three: Nestlé
Nestlé, one of the largest food and beverage manufacturers in the world, has set ambitious targets to achieve net-zero emissions by 2050.
A facility that will play a critical role in achieving this target is the company's Nescafé factory in Veracruz, Mexico.
The Veracruz plant is a prime example of how lean manufacturing principles can drive sustainability, with key practices implemented to reduce energy usage and waste.
For instance, the plant has optimised its production processes by improving the flow of materials and minimising downtime, which reduces energy consumption.
Lean practices, including continuous improvement and waste reduction, have been key in making the factory more energy-efficient.
The Veracruz plant also operates with 100% renewable electricity, further reducing its carbon footprint.
By focusing on recycling and reusing materials, Nestlé has made significant progress at the facility when it comes to reducing the amount of waste sent to landfills.
As the manufacturer works to strengthen the global coffee supply, this plant ensures its products are being produced and distributed in as sustainable a manner as possible.
Through the adoption of these lean strategies and a commitment to net-zero emissions, this plant demonstrates how lean manufacturing and net-zero goals can go hand in hand.
What benefits can we see with lean & net zero integration?
The integration of lean manufacturing and net-zero goals provides a host of benefits for manufacturers.
By reducing waste, optimising energy use and improving resource efficiency, you receive the dual benefits of reduced environmental impact and lower operational costs.
Lean practices also help future-proof operations by meeting regulatory requirements and consumer demand for more sustainable products.
They also provide manufacturers with much-needed agility and flexibility in a rapidly changing global market where supply chain disruption is ever present.
Looking at the net-zero factories of companies like Schneider Electric, BMW Group and Nestlé, the degree to which they've implemented lean principles is self evident.
The leanest factories are the most sustainable and as more manufacturers approach production, the supply chain and sustainability targets with this in mind we'll continue to see positive industry transformation.
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