CBAM Impact on Indian Aluminium Exports

CBAM Impact on Indian Aluminium Exports: The Electricity Problem and Strategic Pathways

Aluminium is one of the most carbon-intensive materials in global trade, and for Indian producers, the EU’s Carbon Border Adjustment Mechanism (CBAM) poses a fundamental challenge to European market access. India is the world’s fourth-largest aluminium producer, with primary production capacity exceeding 4.1 million tonnes per annum and exports to the EU valued at approximately USD 1.0-1.2 billion annually. The core problem is electricity: Indian smelters overwhelmingly rely on coal-fired captive power, pushing emission intensities to 15-18 tCO2 per tonne of aluminium for the smelting stage alone — roughly two to three times the European average. When alumina refining emissions are included, the gap widens further. This analysis quantifies the full exposure, unpacks the unique treatment of indirect emissions for aluminium under CBAM, and maps the strategic pathways available to Indian producers.

India’s Aluminium Industry Structure and EU Trade

India’s primary aluminium production is dominated by three producers: Vedanta Limited (through its subsidiary BALCO and the 1.8 MTPA Jharsuguda smelter in Odisha), Hindalco Industries (an Aditya Birla Group company operating smelters at Renukoot, Hirakud, and Aditya Aluminium), and the National Aluminium Company (NALCO, a public sector undertaking at Angul, Odisha). Together, these account for over 95% of national primary aluminium output.

The European Union is a significant destination for Indian aluminium exports, spanning unwrought aluminium (CN 7601), bars, rods, and profiles (CN 7604), wire (CN 7605), plates, sheets, and strip (CN 7606), foil (CN 7607), and tubes (CN 7608). The breadth of CN code coverage means virtually all aluminium product exports to the EU fall within CBAM scope.

The Electricity Problem: Why Indian Aluminium Is Uniquely Exposed

Aluminium smelting via the Hall-Heroult electrolysis process is extraordinarily electricity-intensive, consuming approximately 13,500-15,500 kWh per tonne of primary aluminium. Electricity typically accounts for 35-40% of production costs and 60-65% of total lifecycle CO2 emissions. In India, over 70% of this electricity is generated from captive coal-fired thermal power plants operated by the smelters themselves. Vedanta’s Jharsuguda complex runs a 2,400 MW captive coal plant; NALCO’s Angul smelter operates a 1,200 MW captive thermal facility.

This coal dependency creates a dramatic emission intensity gap across global aluminium producers:

Indian smelters running on captive coal face indirect emissions of 13.8-16.0 tCO2/t — approximately three to four times the EU average and ten times or more that of Nordic hydro-powered smelters. This single factor makes Indian aluminium among the most CBAM-exposed products globally.

Direct Emissions: Anode Effects and PFC Gases

Beyond indirect electricity emissions, aluminium smelting generates significant direct process emissions from three sources:

• Carbon anode consumption: The Hall-Heroult process uses carbon anodes that react with the oxygen liberated from alumina to form CO2. Pre-baked anode technology (used by most modern Indian smelters) contributes approximately 1.5-1.7 tCO2/t aluminium. Soderberg anode technology, still in use at some older facilities, produces higher emissions at 1.7-2.0 tCO2/t due to additional hydrocarbon volatiles from the in-situ baking process.
• Perfluorocarbon (PFC) emissions: During anode effects — brief periods of abnormal cell operation when alumina concentration drops too low — the electrolyte decomposes to produce tetrafluoromethane (CF4, GWP 6,630) and hexafluoroethane (C2F6, GWP 11,100). These are among the most potent greenhouse gases known. While modern cell control systems have reduced anode effect frequency, PFC emissions can still contribute 0.3-1.5 tCO2e/t aluminium depending on cell technology and operational discipline. Under CBAM, these PFC emissions must be reported in CO2-equivalent and attract full financial obligations.
• Alumina refining (Bayer process precursor): The upstream refining of bauxite into alumina generates approximately 1.5-2.5 tCO2/t alumina, or 2.8-4.8 tCO2/t aluminium at the standard conversion ratio of 1.92 tonnes of alumina per tonne of aluminium. CBAM classifies alumina as a precursor, so these emissions are included in the total embedded emissions of exported aluminium products.

Total Embedded Emissions: Indian vs EU Aluminium

Indian coal-smelted aluminium carries total embedded emissions of approximately 18-22 tCO2/t, compared to 6-10 tCO2/t for the EU average and as low as 3-4 tCO2/t for hydroelectric smelters. The gap of 10-16 tCO2/t is the raw exposure that CBAM will price.

CBAM and Indirect Emissions: Why Aluminium Is a Special Case

A critical feature of the CBAM Regulation (EU 2023/956) is that aluminium is one of only two sectors (alongside hydrogen) where indirect emissions from electricity consumption are included in the CBAM calculation from the outset. For all other covered sectors — steel, cement, fertilisers — only direct emissions are currently counted.

The rationale is straightforward: for aluminium, indirect emissions typically constitute 60-70% of the total carbon footprint. Excluding them would render CBAM ineffective for the sector. The EU’s implementing regulation specifies that indirect emissions should be calculated using the actual emission factor of the electricity source where verifiable, or the country-level default emission factor otherwise.

For Indian producers with captive coal plants, the actual emission factor (0.95-1.10 tCO2/MWh) is worse than the Indian grid default (approximately 0.72 tCO2/MWh). This creates a counterintuitive dynamic: switching from captive coal to grid electricity — even though the grid is still carbon-intensive — would reduce the CBAM-reported indirect emission factor. However, the most impactful strategy remains a genuine shift to renewable electricity.

EU Benchmark and Free Allocation Phase-Out

Under the EU ETS, the product benchmark for primary aluminium is approximately 1.514 tCO2/t for direct emissions. Combined with indirect cost compensation mechanisms, the effective free allocation covers roughly 3.2-5.0 tCO2/t depending on the allocation year. Free allocation is being phased out linearly between 2026 and 2034, after which importers will pay CBAM certificates on the full embedded emissions with no deduction.

CBAM Duty per Tonne: Scenario Analysis

The following table shows steady-state CBAM duties (post-2034, zero free allocation) and transitional duties at different EUA prices. A free allocation deduction of 3.2 tCO2/t is applied for transitional figures.

Steady-State Duty (Post-2034, Zero Free Allocation)

Transitional Phase Duty (With Partial Free Allocation of 3.2 tCO2/t Deducted)

At current captive coal configurations, Indian aluminium faces a transitional CBAM duty of EUR 840-1,344 per tonne — a surcharge of 35-50% on the LME aluminium price (approximately EUR 2,300-2,600/t). This is, in practical terms, a cost that would price Indian primary aluminium out of the EU market unless emission intensity is dramatically reduced.

Worked Example: CBAM Duty Calculation

Consider an Indian aluminium producer exporting 10,000 tonnes of unwrought primary aluminium to the EU in 2029:

• Direct process emissions (anode + PFC): 2.0 tCO2/t
• Indirect emissions (captive coal at 0.98 tCO2/MWh, 14,500 kWh/t): 14.2 tCO2/t
• Precursor emissions (alumina refining): 3.3 tCO2/t
• Total embedded emissions: 19.5 tCO2/t
• EU free allocation deduction (2029, approx. 50% phase-out): 1.6 tCO2/t
• Net chargeable emissions: 17.9 tCO2/t
• EUA price assumed: EUR 65/tCO2
• CBAM duty per tonne of aluminium: 17.9 × 65 = EUR 1,164
• Total CBAM cost for 10,000 tonnes: EUR 11,635,000 (approximately USD 12.7 million)

At an LME aluminium price of approximately USD 2,500 per tonne, this CBAM duty represents 46% of the commodity value — a prohibitive cost that fundamentally alters the economics of exporting coal-smelted aluminium to Europe.

Strategic Options for Indian Aluminium Producers

• Renewable power purchase agreements (PPAs): Long-term solar and wind PPAs at INR 2.5-3.5/kWh (EUR 28-39/MWh) are now broadly cost-competitive with captive coal generation at INR 3.0-4.5/kWh. Hindalco has announced a 300 MW renewable target, and Vedanta plans 1,000+ MW of captive renewables at Jharsuguda. The challenge is matching 24/7 smelter baseload demand with intermittent generation, requiring battery storage, round-the-clock renewable contracts, or hybrid arrangements.
• Captive solar and wind installations: India’s solar potential in Rajasthan, Gujarat, and Odisha (where major smelters are located) is exceptional. Captive solar at utility scale can achieve landed costs of INR 2.0-2.5/kWh with land requirements of approximately 5 acres per MW.
• Anode technology upgrades and PFC abatement: Converting Soderberg to pre-baked anode technology reduces direct emissions by 15-20%. Advanced process control systems that minimise anode effect frequency can cut PFC emissions by 80-90%. Inert anode technology (under development by ELYSIS and others, expected 2030-2035) would eliminate anode CO2 emissions entirely.
• Alumina refining efficiency: Improving the Bayer process through mechanical vapour recompression, advanced digestion, and fuel switching from coal to natural gas or biomass can reduce precursor emissions by 20-40%.
• Secondary (recycled) aluminium: Recycled aluminium requires only 5% of primary production energy, with embedded emissions of approximately 0.5-1.5 tCO2/t. Increasing recycled content in exported products dramatically reduces CBAM exposure. India’s growing scrap collection infrastructure supports this strategy, though alloy specifications and quality requirements must be managed.
• Domestic carbon pricing deductions: If India’s Carbon Credit Trading Scheme (CCTS), under development pursuant to the Energy Conservation Act 2001 (amended 2022), covers the aluminium sector, compliance costs paid domestically could be deducted from CBAM liabilities.
• Market reorientation: Some producers may redirect exports from the EU to non-CBAM markets. While this avoids immediate costs, it is a defensive strategy that does not address the underlying competitiveness challenge as more jurisdictions adopt carbon border measures.

The Competitive Landscape Post-CBAM

CBAM fundamentally reshapes the competitive hierarchy of global aluminium. Nordic producers (Norsk Hydro, Alcoa Iceland) with near-zero electricity emissions gain a structural advantage. Middle Eastern producers (EGA, Alba) with gas-powered smelters occupy a middle tier. Indian and Chinese producers with coal-dominated power face the highest CBAM liabilities. The Indian aluminium industry’s long-term competitiveness in European and other carbon-priced markets depends entirely on the speed and scale of the transition to low-carbon electricity.

The Indian government’s aluminium sector decarbonisation roadmap, developed with the Ministry of Mines and NITI Aayog, targets a 30% reduction in sector-level emission intensity by 2030. If achieved through renewable energy procurement, this would reduce CBAM exposure from approximately EUR 1,100/t to EUR 600-700/t at EUR 65/tCO2 — still significant, but potentially manageable alongside emerging LME premiums for low-carbon aluminium in European spot markets.

RSustain Tools for CBAM Compliance

RSustain provides specialist tools and advisory services to help Indian aluminium producers navigate CBAM obligations:

• CBAM Compass — Navigate the CBAM regulation’s specific requirements for aluminium, including indirect emissions methodology, precursor (alumina) emissions reporting, PFC quantification protocols, and CN code mapping for your product portfolio.
• CBAM Duty Calculator — Model CBAM duty under different energy scenarios: current captive coal, partial renewable switch, full renewable transition, and grid electricity alternatives. Quantify the payback period for renewable energy investments in terms of avoided CBAM duties.
• Carbon Desk Advisory — Our aluminium sector team supports installation-level emissions quantification (including PFC measurement and anode consumption calculations), renewable energy procurement strategy, EU MRR-aligned monitoring plan development, and CBAM-optimised product classification. Contact carbon@rsustain.org to schedule a consultation.