India loses an estimated 4.3 per cent of GDP — roughly ₹14.1 trillion — to corrosion every year, and adopting stronger corrosion-management practices could recover around 1.5 per cent of GDP, or approximately ₹5 trillion, according to a report released on Monday, 3 August. The findings, published by Nomura Research Institute (NRI), place India's corrosion losses well above the global average and frame the issue as a structural economic challenge requiring urgent policy intervention.

Scale of the Problem

India's corrosion losses at 4.3 per cent of GDP exceed the global average of 3.4 per cent, according to the NRI report. The gap is attributed to rapid infrastructure expansion, accelerating urbanisation, and manufacturing growth — all of which have significantly raised exposure to corrosive environments. The cumulative effect is higher maintenance costs and shortened asset lifespans across critical sectors.

The report identifies infrastructure, transport, power, and telecom as the most affected sectors. Among these, the power generation and transmission sector carries the highest corrosion intensity, with losses estimated at 10.1 per cent of sectoral GDP. Railways face annual corrosion-related losses of approximately $3 billion, with the report calling for long-life protection systems that go beyond periodic repainting. The telecom sector, which operates over 8.13 lakh towers supporting 2.948 million base transceiver stations, also faces high corrosion intensity given the exposure of tower infrastructure to harsh outdoor conditions.

Key Recommendations

The NRI report urges a fundamental shift in how public infrastructure projects are tendered — moving from a focus on upfront construction costs to lifecycle cost analysis. This approach would factor in long-term maintenance and durability from the bidding stage, reducing the total cost of ownership for public assets.

The report also calls for strengthening Bureau of Indian Standards (BIS) rules to align with global durability benchmarks and incorporating exposure-based durability requirements into project specifications. It recommends introducing modern testing methods, improving inspection and maintenance protocols for long-life assets, and adopting corrosion-resistant materials — particularly in renewable energy infrastructure, which operates in diverse and often harsh environmental conditions.

Mandating stronger corrosion protection for steel-intensive sectors — specifically telecom, transport, and public infrastructure — was flagged as another priority recommendation.

Why This Matters for India's Infrastructure Push

The report's timing is significant. India is scaling up investment across roads, railways, housing, and renewable energy at an unprecedented pace, making asset durability a pressing concern. The NRI report argues that corrosion is not merely an engineering challenge but an economic and policy issue, urging policymakers to treat asset durability as a core investment consideration rather than an afterthought.

Notably, the report also calls for engineering standards and maintenance practices to evolve in step with India's expanding infrastructure base — a signal that existing frameworks may not be adequate for the scale and pace of current development.

What Comes Next

The report stops short of prescribing a legislative timeline, but its recommendations point toward regulatory reform at the BIS level, revised tendering norms for public works, and sector-specific corrosion protection mandates. Whether these translate into policy action will depend on uptake by the ministries overseeing infrastructure, power, railways, and telecom. The potential upside — recovering ₹5 trillion in annual economic value — gives policymakers a clear fiscal incentive to act.