Jegan has cut the emissions ratio of its production process by 86% between 2022 and 2025, according to data from its internal carbon footprint report. The company, which specializes in zamak die casting for the automotive, home appliance and industrial sectors, has tracked these emissions since 2020, measuring their evolution in tonnes of CO₂e per tonne of Zamak-5 consumed. The decline, concentrated mainly in the last two fiscal years, places the company at emission levels well below those recorded at the start of the series.
A sustained drop over the last two years
The indicator, calculated in tonnes of CO₂e per tonne of zamak consumed, remained stable between 2022 and 2023, moving from 0.0228 to 0.0215 tCO₂e/t. The shift in trend occurs in 2024, when the ratio falls to 0.0064 tCO₂e/t — 70% lower than the previous year — and continues to decline in 2025 to 0.0031 tCO₂e/t, a further 52% drop. Taken together, this represents a cumulative reduction of 86% over the period analyzed.
Complementary indicators follow the same trend: in 2025, Jegan's industrial carbon footprint stands at 0.0015 tCO₂e/m² and 0.0963 tCO₂e per employee. On a three-year basis, the average ratio falls from 0.0169 tCO₂e/t Zamak in 2022–2024 to 0.0103 tCO₂e/t in the following three-year period, confirming that the improvement holds beyond a single fiscal year.
Jegan calculates its corporate carbon footprint per tonne of zamak consumed, rather than on absolute emissions figures. Casting volume varies each year depending on demand from the sectors it serves, so an absolute figure could shift without reflecting any real change in the process. The per-tonne ratio isolates that variable and allows 2022 and 2025 to be compared on the same terms.
What explains a drop of this magnitude
According to the report's data, a 70% reduction in a single fiscal year is not common in a die-casting process, where energy consumption is directly tied to melting and shot of the alloy. A change of this scale typically results from a combination of factors: improvements in the energy efficiency of the process, optimization of consumption per unit manufactured, and the weight of the energy source used on the indicator's result. The fact that the decline continues into 2025, albeit at a slower pace, points to a sustained trend of industrial decarbonization rather than a one-off effect.
A move aligned with the sector's industrial sustainability
Jegan frames this result within a broader shift toward sustainable industry, in which carbon footprint reporting moves from an annual exercise to a management indicator, alongside other production efficiency parameters. In die casting, where energy consumption is a significant operating cost, cutting CO2 emissions and cutting consumption tend, in practice, to be the same improvement seen through two different indicators.
The data takes on particular relevance in sectors such as automotive, where component manufacturers are part of supply chains subject to increasingly close environmental scrutiny. Having a documented emissions ratio with a historical series allows a customer to assess not only a supplier's emission level at a given point in time, but also its trend across several fiscal years.
At Jegan, measuring our carbon footprint is part of our management, not just our reporting.
We have reported this data series to the Spanish Ministry for Ecological Transition and the Demographic Challenge (MITECO) since 2020, which allows us to compare each fiscal year against previous ones rather than presenting an isolated figure for the current year. That continuity is what has allowed us to identify when the shift in trend occurs, starting in 2024, and confirm that it continues in 2025 — something that wouldn't be visible from a single data point.
This approach to tracking lets us treat the carbon footprint as one more indicator within the management of our production process, alongside other parameters such as energy consumption or output per unit produced, rather than treating it as an annual reporting exercise disconnected from plant activity. It's that integration — measuring, comparing and tracking year after year — that makes an 86% reduction not a one-off figure, but the visible result of a process we continue to monitor."
