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Steel · Capital AllocationEAF-Scrap Versus BF-BOF: The Full Cost Comparison for India's Next Wave of Steel Capacity
India's steel capacity needs to grow from 200 Mtpa today to 300 Mtpa by 2030. Every tonne of new capacity built between now and 2032 locks in a specific production route, along with its carbon footprint, for the next 25 to 30 years. Choosing between BF-BOF and EAF-scrap is no longer just an operational decision. It is a major capital allocation choice with three-decade consequences. At current input prices, with imported shredded scrap sitting around $340 to $380 per tonne CFR Nhava Sheva, coking coal near $230 to $260 per tonne, and iron ore at $100 to $120 per tonne, the operating costs for EAF and BF-BOF overlap in the Rs 36,000 to Rs 46,000 per tonne range. The capital expenditure picture, however, strongly favors EAF at roughly Rs 3,500 to Rs 5,000 crore per Mtpa, compared to the steeper Rs 8,400 to Rs 10,000 crore per Mtpa for a new integrated BF-BOF plant. When we factor in carbon costs, the gap widens entirely. BF-BOF, operating at India's sector average of 2.36 tCO2 per tonne of steel, faces roughly Rs 5,000 per tonne in CBAM certificate costs for EU exports in 2026 based on verified data. This liability climbs past Rs 15,000 per tonne by 2034 as free allocations disappear. Meanwhile, EAF-scrap at 0.3 tCO2 per tonne effectively sidesteps CBAM liability and even earns CCTS CCC revenue. This analysis builds a direct comparison from verified primary data and outlines precisely where the EAF operating cost advantage reaches its threshold.
Key Takeaways
EAF-scrap capex requires only 40% to 55% of the capital needed for a BF-BOF plant of equivalent liquid steel output. For context, Tata Steel's Ludhiana EAF (a 0.75 Mtpa facility using 100% scrap that commissioned in March 2026) was built for Rs 3,200 crore, translating to roughly Rs 4,267 crore per Mtpa equivalent. A greenfield integrated BF-BOF plant demands about Rs 8,400 to Rs 10,000 crore per Mtpa, based on the IIT Bombay benchmark of $1,000 to $1,200 per tonne. Furthermore, an EAF plant commissions in just 18 to 30 months compared to the 48 to 72 months needed for an integrated BF-BOF complex, allowing EAF projects to capture market demand and generate cash flow much earlier.
At late 2025 and early 2026 prices, EAF and BF-BOF operating costs sit in a similar bracket. Imported shredded scrap at $340 to $380 per tonne CFR translates to around Rs 34,000 to Rs 38,000 per tonne of scrap. Using a 1.10 scrap-to-steel yield ratio, this costs about Rs 37,000 to Rs 43,000 per tonne of liquid steel. When adding electricity, electrodes, and conversion costs, total EAF operational expenses land near Rs 43,000 to Rs 50,000 per tonne using grid power, or Rs 39,000 to Rs 45,000 per tonne if utilizing captive solar. BF-BOF operational expenses generally range from Rs 34,000 to Rs 46,000 per tonne depending on the prevailing commodity cycles. The scrap price relative to coking coal remains the primary swing factor.
The carbon cost scenario heavily favors EAF operations. India's BF-BOF sector averages 2.36 tCO2 per tonne of steel. With the EU ETS near €65 per tCO2 and the BF-BOF CBAM benchmark set around 1.543 tCO2 per tonne, an Indian BF-BOF exporter using verified data will pay about €56 per tonne (Rs 5,040) in CBAM certificates for 2026 exports. By 2034, when free allocations drop to zero, this rises to roughly Rs 7,380 per tonne. Conversely, EAF-scrap generates about 0.3 tCO2 per tonne. Since the BF-BOF benchmark already exceeds EAF's actual emissions, the CBAM certificate obligation for EAF steel drops to near zero. Domestically, EAF also earns CCTS CCC revenue for beating its target intensity.
The CBAM default value penalty applies equally to both EAF and BF-BOF plants if they fail to provide verified emission data to European importers. India's default steel emission factor stands at 4.32 tCO2 per tonne before standard mark-ups, and this blanket rate applies across all production routes. An advanced EAF plant producing steel at 0.3 tCO2 per tonne that fails to submit its verified data will face the exact same penalty as the most polluting BF-BOF plant. Therefore, EAF plants share the same urgent need for strict MRV compliance to activate their near-zero carbon liability.
While scrap supply constraints are real, they remain manageable over a 5 to 10 year planning horizon. India consumed approximately 35 Mt of ferrous scrap in 2024, supported by 7 to 9 Mt of imports. Total scrap availability is expected to reach 65 to 70 Mt by 2030 as older vehicles and structures hit end-of-life status. The 2021 Vehicle Scrappage Policy alone is projected to unlock 5 to 8 Mt of high-quality auto scrap by the end of the decade. Additionally, Direct Reduced Iron (sponge iron) offers a direct substitute in EAF charge mixes. With DRI priced around Rs 24,000 to Rs 29,000 per tonne, it creates a practical ceiling that protects EAF mills from runaway scrap prices.
Capex comparison: The case before a single tonne of steel is made
The capital expenditure differential between EAF and BF-BOF stands out as the first and most decisive advantage for the scrap route. An integrated greenfield BF-BOF complex is a massive undertaking, requiring coke ovens, a sinter plant, a blast furnace, and a basic oxygen furnace. The IIT Bombay analysis of India's steel sector competitiveness confirms that BF-BOF capex hovers between $1,000 and $1,200 per tonne of annual liquid steel capacity. At an exchange rate of Rs 84, this translates to roughly Rs 8,400 to Rs 10,080 crore per Mtpa.
In contrast, a greenfield EAF-scrap plant requires only the electric arc furnace itself, a ladle metallurgy furnace, and continuous casting equipment. It completely eliminates the costly and space-intensive ironmaking capital chain. Tata Steel's Ludhiana EAF facility, a 0.75 Mtpa operation commissioned in March 2026, relies entirely on scrap and produces steel at under 0.3 tCO2 per tonne. The total cost was Rs 3,200 crore, working out to about Rs 4,267 crore per Mtpa. JSW Steel's greenfield Kadapa EAF project is similarly tracking industry estimates of Rs 3,500 to Rs 5,000 crore per Mtpa for Indian facilities of this type.
BF-BOF Integrated Greenfield
Coke ovens and sinter plant Rs 2,000 to 3,000 cr/Mtpa
Blast furnace and hot metal Rs 3,500 to 4,500 cr/Mtpa
BOF steelmaking and ladle Rs 1,500 to 2,000 cr/Mtpa
Continuous casting and rolling Rs 1,400 to 2,000 cr/Mtpa
Captive power and utilities Rs 1,000 to 1,500 cr/Mtpa
Total Capex Rs 9,400 to 13,000 cr/Mtpa
EAF-Scrap Greenfield
Ironmaking step Eliminated entirely
EAF furnace and transformer Rs 1,200 to 1,800 cr/Mtpa
Ladle metallurgy Rs 400 to 600 cr/Mtpa
Continuous casting and rolling Rs 1,400 to 2,000 cr/Mtpa
Scrap yard and utilities Rs 500 to 800 cr/Mtpa
Total Capex Rs 3,500 to 5,200 cr/Mtpa
This gap in upfront cost heavily shapes risk-adjusted capacity planning. Building a BF-BOF integrated plant locks away massive amounts of capital for five to six years before a single product is sold, and committing to that infrastructure spans 25 to 30 years. An EAF plant requires less than half the investment, commissions within two and a half years, and begins generating cash flow much earlier. For any company pursuing rapid, flexible scaling to meet India's demand targets, the EAF pathway offers a far shorter payback period.
Operating cost comparison: Where scrap price drives the outcome
Operating expenses are where the BF-BOF and EAF routes fiercely compete. The two key raw materials involved, coking coal for BF-BOF and ferrous scrap for EAF, are globally traded commodities prone to significant price swings within a single year. The following data builds a direct comparison across three different scrap price scenarios, utilizing early 2026 pricing for all other variables.
| Cost Component | BF-BOF (per liquid tonne) | EAF (Low Scrap: $290/t) | EAF (Mid Scrap: $360/t) | EAF (High Scrap: $430/t) |
|---|---|---|---|---|
| Primary raw material | Iron ore: ~Rs 13,440 | Domestic HMS: ~Rs 30,250 | Imported shredded: ~Rs 37,400 | Premium import: ~Rs 44,770 |
| Energy feedstock | Coking coal + coking: ~Rs 17,990 | Not applicable | Not applicable | Not applicable |
| Electricity | ~Rs 4,200 | Captive Solar: ~Rs 2,000 | Grid Power: ~Rs 2,800 | Grid Power: ~Rs 2,800 |
| Electrodes and fluxes | ~Rs 900 | ~Rs 1,700 | ~Rs 1,700 | ~Rs 1,700 |
| Conversion and overheads | ~Rs 3,000 | ~Rs 2,000 | ~Rs 2,000 | ~Rs 2,000 |
| Total Operating Cost | Rs 39,530 | Rs 35,950 (EAF wins) | Rs 43,900 (BF-BOF wins) | Rs 51,270 (BF-BOF wins) |
| CCTS CCC Revenue Net | Cost or Penalty | + Rs 1,360 | + Rs 1,360 | + Rs 1,360 |
| CBAM Cost (2026 Verified) | ~Rs 5,040 | ~Rs 0 to 200 | ~Rs 0 to 200 | ~Rs 0 to 200 |
| Total Cost for EU Export | Rs 44,570 | Rs 34,590 | Rs 42,540 (EAF wins) | Rs 49,910 (BF-BOF wins) |
The table highlights the core operating dynamic. When scrap prices sit around $290 to $320 per tonne, EAF wins decisively on pure operating costs alone. At current import prices of $340 to $380 per tonne, the basic operating costs run roughly parallel, but the immense carbon advantage of EAF pulls it ahead for any plant targeting European exports. Once scrap pushes above $430 per tonne, BF-BOF regains the total cost advantage even when factoring in carbon penalties. However, historically, such high scrap prices trigger a shift toward Direct Reduced Iron (DRI), providing a functional cap on what EAF operators actually pay.
India leads the world in producing Direct Reduced Iron, commonly known as sponge iron. With about 55 Mt of output in FY2025 and an expected 65 Mt by 2030, this material costs around Rs 24,000 to Rs 29,000 per tonne domestically. When accounting for yield ratios, DRI-based EAF steel requires about Rs 25,000 to Rs 32,000 per tonne in pure feedstock costs, sitting comfortably below the steep Rs 37,000 plus seen for imported scrap. Indian EAF operators constantly adjust their charge mixes, utilizing anywhere from 30% to 80% DRI depending on real-time market pricing. This flexibility effectively limits their exposure to extreme international scrap surges. Therefore, any analysis assuming high scrap prices will destroy EAF margins must account for the DRI substitute.
The carbon cost differential: Where EAF wins unconditionally
Evaluating the environmental liabilities and incentives brings the contrast into sharp focus.
| Carbon Metric | BF-BOF Profile | EAF-Scrap Profile |
|---|---|---|
| GHG emission intensity | 2.36 tCO2/t (India sector average, CCTS baseline). Large integrated plants hover near 2.27 tCO2/t. | Under 0.3 tCO2/t (Utilizing captive renewable energy). Grid-powered EAF sits near 1.2 to 1.4 tCO2/t. |
| CBAM cost for EU export (2026 Verified Data) | ~Rs 5,040 per tonne. Expected to rise past Rs 15,300 per tonne by 2034 as free allocations end. | Near Zero. Actual emissions fall below the established BF-BOF CBAM benchmark of 1.543 tCO2/t. |
| CBAM cost without verified data (Default Values) | ~Rs 19,000 per tonne. The default 4.32 tCO2/t rate ruins export margins entirely. | ~Rs 19,000 per tonne. EAF plants face the exact same default penalty if they fail to supply verified audits. |
| CCTS CCC Revenue Potential | Breakeven or small deficit. Hitting the sector average leaves little room for surplus credit generation. | ~Rs 136 crore per year (for a 1 Mtpa plant). Operating far below intensity targets generates significant tradable credits. |
The scrap supply question and why it isn't a long-term barrier
The most frequent argument against a massive EAF expansion in India centers on scrap availability. Historically, India collects roughly 27 to 32 Mt of domestic scrap through a highly fragmented, informal network, supplementing it with 7 to 9 Mt of imports. Attempting to add 60 to 80 Mt of new EAF capacity over the next decade sounds mathematically difficult at first glance.
However, three major shifts alter this landscape over a five to ten year horizon. First, the massive volumes of steel poured into vehicles, structures, and machinery during India's economic boom in the late 1990s and early 2000s are now reaching their end-of-life cycle. This naturally expands the domestic scrap pool toward a projected 65 to 70 Mt by 2030, purely through organic lifecycle completion. Second, the 2021 Vehicle Scrappage Policy actively mandates the retirement of older government fleets and incentivizes private scrapping, unlocking an estimated 5 to 8 Mt of prime, low-contamination auto scrap by the end of the decade. Third, the abundant availability of domestic DRI provides an immediate safety valve against international scrap shortages.
The core challenge is not whether India will have enough material to support EAF growth, but rather how quickly the country can formalize its recycling networks and invest in modern shredding infrastructure. Initiatives like the Rs 5,000 crore National Mission for Sustainable Steel, which channels the vast majority of its funding to secondary steel processors, are specifically designed to bridge this exact infrastructure gap.
India's ferrous scrap imports do face a specific emerging hurdle: the European Union's revised Waste Shipments Regulation. This rule tightens the export of waste-classified scrap to non-OECD nations. India has formally applied for an exemption to continue receiving this material, with a final decision expected from the European Commission in November 2026. A denial could constrain a notable portion of India's import supply. Fortunately, the practical mitigation is already underway through faster domestic formalization, increased DRI utilization, and the active diversification of import sourcing to unaffected regions like the US, South Africa, the UAE, and Australia. It remains a notable risk, but not a structural barrier to expansion.
Frequently Asked Questions
What is the capex difference between a new EAF-scrap plant and a new integrated BF-BOF plant in India?
A greenfield integrated BF-BOF plant in India costs approximately Rs 8,400 to Rs 13,000 crore per million tonne per year of liquid steel capacity. In contrast, an EAF-scrap plant requires roughly Rs 3,500 to Rs 5,200 crore per Mtpa. For example, Tata Steel's Ludhiana facility was built for about Rs 4,267 crore per Mtpa equivalent. EAF plants also commission in 18 to 30 months, significantly faster than the 48 to 72 months required for a BF-BOF complex.
At what scrap price does EAF become more expensive than BF-BOF in India?
Looking purely at base operating costs under mid-cycle conditions, EAF using imported shredded scrap becomes pricier than BF-BOF once scrap exceeds $400 to $420 per tonne CFR. However, this threshold shifts favorably for EAF when operators substitute cheaper domestic DRI into their mix, utilize captive solar to slash electricity costs, and factor in CCTS revenue alongside near-zero CBAM liabilities for EU exports.
Why does CBAM apply to Indian EAF steel at the same default value as BF-BOF?
India's CBAM default emission factor of 4.32 tCO2 per tonne applies broadly to all Indian steel shipments lacking verified, plant-specific emission data. An advanced EAF plant producing steel at just 0.3 tCO2 per tonne will face the exact same crushing financial penalty as the heaviest polluters if they fail to supply the required audits. Proper MRV compliance is absolutely critical for EAF plants to unlock their inherent carbon advantages.