Choosing materials and technology for public infrastructure means trading cost against reliability. Discuss with examples from the telecom and power sectors.

In 1976, an official of the Posts and Telegraphs Department said that widespread use of cheap aluminium conductors was causing "disconnection faults" that left telephones dead. A P&T expert committee then recommended reverting to copper [1]. The case shows that choosing the lowest-cost material often means accepting lower reliability, and that the users usually bear that cost later.

Telecom sector

• Cheap but fragile: P&T used aluminium to keep costs down during a "vast expansion" of telephone services. The faults that followed meant repeated repairs, lost service and finally a costly switch back to copper [1].
• Resource constraint: India meets over 90% of its copper concentrate needs through imports, and telecom is one of the sectors that drives copper demand [2]. The reliable material therefore increases import dependence.
• Technology shift: Optical fibre costs more at the start but has far fewer faults than copper in the last mile. This is a reliability gain that justifies the higher initial cost.

Power sector

• Transmission: HTLS (high-temperature low-sag) conductors cost more than conventional ACSR conductors. However, they carry more current on existing towers and corridors, which avoids land acquisition and right-of-way delays [3].
• Distribution: Under the Revamped Distribution Sector Scheme (RDSS), bare overhead lines are being replaced with aerial bunched cables. These cost more but reduce faults and power theft, and the scheme targets AT&C losses of 12–15% [4].
• Counter-view: A budget-limited state may reasonably choose cheaper technology so that access expands faster. A line that is often dead, however, does not deliver real access.

Why the trade-off goes wrong

• Tenders that choose the lowest initial bid ignore what an asset costs to run and repair over its whole life.
• Field trials are rarely held before a technology is rolled out at scale. In 1976, the expert review came only after faults had become widespread [1].

Taken together, these examples show that cost and reliability are not opposites when costs are counted over an asset's full life. The way forward is to make life-cycle costing part of procurement rules, test new materials in pilots before scaling them, and secure supplies of key materials through the National Critical Mineral Mission [5]. This would help build the resilient infrastructure that SDG 9 calls for, so that wider access also means service people can rely on.