Environmental Digital Capability in Mandated Industry 4.0 Implementation at HAL and BEL
This study analyzes environmental digital capability in HAL and BEL under a government-mandated Industry 4.0 framework using 2025 administrative data, revealing that while environmental implementation trajectories align with adjusted production indices, significant gaps persist between digital implementation scores and actual environmental outcomes, underscoring the need to distinguish between maturity metrics and measured sustainability improvements.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
In the modern world, factories are becoming increasingly connected. Machines talk to computers, and computers talk to each other, creating a digital nervous system for manufacturing. This shift, often called the fourth industrial revolution, promises to make production smarter and more efficient. Alongside this technological upgrade comes a strong hope: that these digital tools will also help the planet by reducing waste, saving energy, and managing resources better. However, a crucial question remains unanswered for many industries. Just because a factory installs a new digital system does not automatically mean it is using it effectively to help the environment. There is a distinct difference between having the technology in place and actually seeing the environmental benefits it is supposed to deliver. This gap between installing a tool and measuring its real-world impact is where the story of this research begins.
Two researchers, Catherene Julie Aarthy C and Smriti Verma, decided to investigate this exact problem within the defense manufacturing sector of India. They looked at two major government-owned companies, Hindustan Aeronautics Limited, which builds aircraft, and Bharat Electronics Limited, which produces defense electronics. Both companies were required by the government to follow a strict set of rules to upgrade their operations with digital technology. The researchers had access to the monthly records these companies submitted over a six-month period in 2025. Instead of asking managers how they felt about their progress, the team examined the actual administrative data to see what was truly being implemented. They focused on three specific areas where digital tools could help the environment: automating the reduction of waste, monitoring how much material is used, and digitizing the process of checking environmental rules. They created a score to track how much of this environmental work was actually completed.
The study revealed a clear picture of how these companies were moving forward. The researchers found that the companies were indeed building their digital capabilities, but the speed and focus varied. In the aerospace company, the progress on environmental digital tools sometimes lagged behind their general production upgrades, while at other times it moved ahead. The electronics company showed a similar pattern of fluctuation. On average, the gap between their general production digitalization and their specific environmental digitalization was small, measuring just a few points on their internal scale. This suggests that under a government mandate, these organizations are paying attention to environmental tasks, but they are not always perfectly synchronized with their broader technological upgrades. The data showed that the companies were successfully installing the systems, but the records only confirmed that the systems were there, not that they had successfully reduced pollution or saved resources yet.
A second layer of the investigation compared these environmental efforts with another digital function called traceability. Traceability involves keeping a digital record of every part and component as it moves through the factory, ensuring that the history of a product is preserved from start to finish. The researchers found that the companies were generally much faster at setting up these environmental monitoring tools than they were at establishing full traceability for their components. For the aerospace company, the environmental score was significantly higher than the traceability score for most of the six months. The electronics company showed a similar trend, though the gap between the two areas narrowed as time went on. This indicates that while the factories were quick to adopt tools that help them manage waste and materials in the moment, the more complex task of tracking every single part across the entire lifecycle was moving at a slower pace.
The researchers also looked at whether these digital improvements led to immediate savings in time or money, as the companies reported. They noticed that as the environmental digital scores went up, the reported savings in man-hours also increased. However, the study is careful to explain that this connection does not prove that the digital tools caused the savings. The data only shows that the two things happened at the same time. It is possible that the savings came from other factors, or that the way the companies reported their numbers changed over time. The researchers explicitly state that they cannot say the digital tools caused the environmental improvements or the productivity gains. They found that the companies were good at reporting that they had installed the technology, but the records did not contain the hard numbers needed to prove that waste was actually reduced or energy was truly saved.
This work serves as an important reminder for anyone interested in sustainable manufacturing. It highlights that a high score on a digital checklist does not guarantee a greener factory. The study demonstrates that we must distinguish between the installation of a system and the actual performance of that system. The two companies studied were clearly making progress in setting up their digital infrastructure, and they were doing so under a common set of rules that allowed for a fair comparison. Yet, the research concludes that we need to be cautious about assuming that digital maturity equals environmental success. To truly understand the impact of these technologies, future efforts must go beyond checking boxes and start measuring the actual flow of materials, energy, and waste. Until then, the story of digital manufacturing is one of potential and implementation, but not yet one of confirmed environmental victory.
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