The Investment Window That Closes When the Furnace Gets Relined

The Target Is

2029-30. The Decision Window Closes Years Before That The National Mission on Green Steel commits to bringing emissions intensity down to 2.2 tCO2e per tonne of crude steel by 2029-30, from the current 2.55-2.65. That target sounds like it gives the sector roughly four years to work with.

It doesn't. The actual decision window is much narrower, because more than 43 million tonnes of blast furnace capacity is due for relining before 2030 - and a relining decision, once made, locks in the coal-based BF-BOF pathway for another 15-20 years regardless of what the 2029-30 target says on paper.

Where the Commitment Actually Breaks This is not a

funding gap or an enforcement gap in the usual sense - it's a timing gap between when a target is due and when the physical infrastructure decisions that determine whether it's achievable actually get locked in. Relining is capital-intensive maintenance done roughly every two decades to extend a blast furnace's life.

A plant owner deciding today whether to reline an aging furnace or invest instead in a DRI-EAF (Direct Reduced Iron-Electric Arc Furnace) replacement is making a choice with a 15-20 year consequence - well past the Mission's 2029-30 checkpoint.

If the sector waits until 2028 or 2029 to respond to the emissions-intensity target, the relining decisions will already have been made and the coal-based pathway will already be locked in for two more decades.

The Case That This Doesn't Even Require New Money

The researcher's key finding - and the one that changes the policy calculus entirely - is that most of India's planned BF-BOF capacity, projected to rise to 56% of total production by 2030, "has not broken ground." That means the investment decision is still open.

Redirecting planned capital from new BF-BOF plants to DRI-EAF is not a case of finding additional money; it is a case of allocating already-committed capital differently, before ground is broken and the coal-based pathway becomes the default by inertia rather than by deliberate choice.

This is precisely why the researcher frames steel as facing a "hard-to-abate barrier" rather than being inherently hard to abate - the barrier is the investment decision window and that window is still open, but narrowing every quarter that new BF-BOF ground gets broken.

Where the mission genuinely does face a harder constraint is green hydrogen availability - DRI-EAF plants can run on natural gas today (at roughly 1.2 tCO2e per tonne) but need cost-competitive green hydrogen for near-zero emissions and researchers project that switch won't be economical until 2040-2045.

That's a real technology-cost gap the Mission cannot will away with redirected capital alone. For the exam, the sharpest insight is that a climate target's stated deadline and its actual decision deadline can be years apart - the infrastructure lock-in point, not the headline target date, is what determines whether a commitment is still achievable.