Critically examine the effectiveness of capex subsidy with least-cost bidding, compared with production-linked incentives, for building strategic mineral processing capacity in India.

India imports all of its lithium, cobalt and nickel [4], and its capacity to process them is nascent [1]. The Union Cabinet's ₹2,814 crore Capex Support Scheme pays a 30% capital subsidy for two lithium and two nickel plants, with beneficiaries chosen by least-cost bidding [1]. This is a deliberate break from the PLI model. It is effective for getting plants built, but on its own it cannot make them viable.

Strengths of capex subsidy with least-cost bidding

• Bankability: Refineries face high capital costs and scarce technology [1]. A PLI pays only after output is sold, so it cannot help a plant that cannot raise money to be built.
• Fiscal efficiency: Bidders compete on the lowest support they need, within caps of ₹500 crore per lithium plant and ₹900 crore per nickel plant [1].
• Accountability: Money is released in three milestone-linked tranches, so payment follows physical progress [1].
• Scale: Minimum sizes of 30 kt for lithium and 50 kt for nickel rule out sub-scale plants [1].

Weaknesses compared with PLI

• No discipline on running costs: The subsidy lowers the cost of building, not of operating. The Standing Committee wants refining that is "cost-competitive with imports" [4]. A PLI ties reward to actual output.
• Winner's curse: The lowest bid may come from the most optimistic firm, not the soundest one. The technical round before bidding only partly reduces this risk.
• Feedstock risk: Limited access to raw material is a named barrier [1]. KABIL's Argentina lithium deal is still at the exploration stage [3]. A plant without ore still gets its capex money, whereas a PLI would pay nothing.
• Timeline: Clearance delays after award [4] could push milestones past the scheme's 2030-31 end date [1].
• Concentration: With only four plants, one failure loses a quarter of the planned capacity.

Way forward

• Hybrid design: Use capex for construction and make the final tranche depend on actual output.
• Ore supply: Get KABIL offtake agreements that send overseas ore to these plants [3]. Use the 40 kt output of the ₹1,500 crore recycling scheme as a second feedstock [2].
• Monitoring: Set up an inter-ministerial group to track projects, with penalties for delay [4].
• Technology: Use the NCMM Centres of Excellence to adapt processing technology [2].

Capex subsidy with least-cost bidding is the right tool to start first-of-their-kind plants, and a PLI is better at rewarding output. Combining the two, with secure ore supply, would make processing a real pillar of Atmanirbhar Bharat and support India's net-zero 2070 goal.