Net Zero Has Become an Engineering Problem, not a Sustainability Project

For a long time, net zero could be discussed at a distance from day-to-day engineering. Targets were set at corporate level, sustainability teams measured impact and engineering functions were asked to support the direction of travel. That separation is becoming increasingly difficult to maintain.

Carbon, energy use, material efficiency, product life, repairability and end-of-life recovery are now engineering inputs. They influence architecture, materials selection, manufacturing routes, controls, infrastructure and supplier decisions. In practical terms, the route to lower emissions is being determined by thousands of design and production choices long before the final carbon figure is reported.

Spencer Salter of JLR makes the point particularly clearly. He argues that engineers should think about a project’s end before it begins, asking how the materials and resources used in a product can ultimately be extracted and reused. It is a fundamental change in design logic. Circularity cannot be added successfully at the end of a programme if the product was never designed to be separated, repaired, recovered or recycled.

That has ramifications across sectors. Material selection has to account for more than initial performance. Joining methods can determine whether a product can be dismantled. Surface treatments, adhesives and mixed-material structures can challenge recovery. Manufacturing choices affect waste and energy consumption, while product architecture influences service life and repair. The sustainability outcome is therefore inseparable from the engineering process.

Aviation presents the same challenge at a different scale. Solange Baena of Airbus describes collaboration and communication as essential to decarbonising aviation because no single company controls the entire system. Aircraft technology, fuels, infrastructure, regulation, supply chains and government policy all influence the pace at which emissions can be reduced. Even technically credible solutions need an ecosystem capable of supporting their deployment.

Electrification shows why the conversation must also move beyond first-generation technology adoption. Charlie Robson of Motion Applied describes an EV market in which many manufacturers are now working from similar fundamental technologies. As that baseline matures, the next challenge is differentiation, accessibility and commercial viability. Software, controls, efficiency, and system integration are becoming increasingly important because the question is no longer simply whether electrification works, but how it can work better.

The same principle applies inside factories. Decarbonisation may involve renewable electricity, more efficient machinery, heat recovery, process optimisation, reduced scrap, better compressed-air management or changes to production scheduling. For some businesses, the highest-impact intervention will be a new energy technology. For others, it will be removing waste from a process that has operated in the same way for years.

This is why net zero is increasingly a mainstream engineering discipline rather than a specialist sustainability topic. The best decisions have to balance carbon with performance, safety, reliability, manufacturability and cost. A technically lower-carbon solution that cannot meet production or certification requirements is not viable, just as a high-performance product that ignores material scarcity or end-of-life constraints may create problems elsewhere in the system.

That distinction matters because the transition will not be achieved through a single breakthrough. It will be delivered through better decisions repeated across thousands of programmes, production lines and supply chains. The organisations that make sustainability part of engineering from the outset will be better placed to manage those trade-offs than those trying to retrofit it once the important choices have already been made.

The Clean Energy and Net Zero track at Advanced Engineering 2026 will explore those practical trade-offs across electrification, hydrogen, energy efficiency, low-carbon manufacturing, circular design and life-cycle thinking. The emphasis is on what organisations can engineer differently, rather than simply restating the scale of the environmental challenge.

Advanced Engineering takes place at the NEC Birmingham on 4-5 November 2026. Registration is free for qualified engineering and manufacturing professionals.