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Cross-Cutting · Green FinanceIndia’s Climate Finance Taxonomy: What the May 2025 Draft Means for Steel, Aluminium, and Fertiliser CFOs — and What Taxonomy Alignment Is Actually Worth in Basis Points
India’s Department of Economic Affairs published the draft Climate Finance Taxonomy in May 2025 — the first official framework classifying which economic activities qualify for green or transition finance in India. Hard-to-abate sectors including iron, steel, aluminium, and cement are explicitly included, not as green activities, but as transition activities where low-carbon alternatives are not yet commercially viable at scale. This distinction matters enormously for access to capital: transition-labelled instruments unlock a different and larger pool of climate-aligned investors than purely green instruments, because they allow industrialists to finance the GEI improvements achievable today — EAF steelmaking, RE for aluminium, waste heat recovery — without waiting for economically immature technologies like green hydrogen DRI. Taxonomy alignment reduces the cost of debt by approximately 20 to 80 basis points versus conventional financing. On a Rs 500 crore project at 50 basis points over a 12-year life, the cumulative interest saving is approximately Rs 30 crore. The taxonomy’s Technical Screening Criteria — which will determine exactly which investments in each hard-to-abate sector qualify — have not yet been finalised in the sectoral annexures that must follow the May 2025 draft. But the architecture is clear, and CCTS GEI data is already the most credible evidence base that any Technical Screening Criteria for industrial activities will use.
India’s DEA published the Draft Climate Finance Taxonomy in May 2025, following Finance Minister Sitharaman’s Union Budget FY2024-25 announcement. The taxonomy aims to facilitate approximately USD 250 billion per year in climate-aligned finance. As of April 2026, the draft is post-consultation (public consultation closed June 25, 2025) and the final framework with sectoral annexures has not yet been released. The sectoral annexures — which will specify Technical Screening Criteria (TSCs) for each sector, including hard-to-abate industries — are the critical missing piece that will determine actual investment eligibility. Until they are released, industrial companies should treat the taxonomy as directional guidance, not yet an operational financing framework.
The taxonomy creates a three-category structure: Climate Supportive (Tier 1 — directly avoiding emissions, e.g. renewable energy); Climate Supportive (Tier 2 — lowering emissions intensity with clear improvement pathways); and Climate Transition — for hard-to-abate sectors where zero-carbon alternatives are not yet viable. Steel, aluminium, and fertilisers fall primarily in the transition category. This is a commercially significant design choice: transition-labelled bonds are increasingly accepted by global ESG investors as a legitimate complement to green bonds, and in 2024 to 2025, the transition bond market grew faster than the pure green bond market in several Asian economies. India’s inclusion of hard-to-abate sectors in the taxonomy explicitly enables Indian industrial companies to access this capital pool with regulatory backing.
The financing cost saving from taxonomy alignment — the greenium — typically ranges from 20 to 80 basis points below equivalent conventional debt pricing. The range varies by: instrument type (green bonds command larger greenium than sustainability-linked loans); issuer size (larger issuers with higher credit ratings access larger greenium because the investor base is broader); and taxonomy credibility (EU taxonomy-aligned bonds receive larger greenium than domestically-labelled equivalents because EU investors apply their own taxonomy as a baseline). For Indian industrial companies, the achievable greenium is currently in the lower part of the range — approximately 20 to 40 basis points — because India’s taxonomy is new, sectoral annexures are pending, and international investor familiarity with Indian industrial transition finance is still developing. This gap will close as the taxonomy matures and as CCTS GEI verification provides the kind of auditable third-party data that international investors require.
The CCTS-taxonomy alignment that IEEFA has explicitly recommended is the single most important policy linkage for industrial companies. The logic: CCTS GEI targets require verified, ACVA-audited emission intensity data for every covered entity. This is exactly the data that taxonomy Technical Screening Criteria will require to determine whether an investment qualifies as transition-eligible. An industrial company that has invested in CCTS-compliant MRV infrastructure has simultaneously created the evidentiary foundation for taxonomy-aligned green bond or transition bond issuance — without any additional data collection effort. CCTS compliance and taxonomy eligibility are not two separate compliance burdens; they are the same data infrastructure serving two purposes. Companies that understand this connection can issue taxonomy-aligned bonds as a direct output of their CCTS compliance investment.
India’s green bond market has reached USD 55.9 billion in cumulative GSS+ (Green, Social, Sustainability-plus) debt issuance as of December 2024 — the fourth-largest among emerging markets after China, Brazil, and Chile. But the hard-to-abate industrial sectors have been largely absent from this market because the absence of a taxonomy created greenwashing risk for lenders financing steel or aluminium decarbonisation investments. The May 2025 taxonomy draft explicitly includes these sectors and provides the regulatory legitimacy that lenders needed to classify industrial transition loans as taxonomy-aligned. When the sectoral annexures are released, the taxonomy will function as the permission structure for Indian banks, development finance institutions, and international green bond investors to finance EAF steelmaking, aluminium smelter RE transitions, and green ammonia projects at preferential rates.
The three-tier structure — where each industrial activity sits
The taxonomy’s classification determines which financing instruments an investment can access. The distinction between Tier 1 (directly green), Tier 2 (reducing emissions intensity), and Transition (hard-to-abate sectors) is not merely semantic — it determines the investor base, the applicable green bond standard, and the reporting requirements that the issuing company must meet. Understanding where specific industrial investments fall in this structure is the prerequisite for any financing strategy built on taxonomy alignment.
What taxonomy alignment is actually worth — the greenium in rupees
The greenium — the interest rate saving that taxonomy-aligned or labelled green bonds command over equivalent conventional bonds — is the financial reason to invest in taxonomy eligibility. It is not a courtesy discount. It reflects the structural fact that the pool of eligible buyers for taxonomy-aligned instruments is larger than for conventional instruments: ESG mandated funds, sustainable investment strategies, development finance institutions, and sovereign wealth funds with green allocation targets all compete to buy green-labelled paper, which tightens the yield that issuers must offer to clear the market.
The sustainability-linked loan structure in Scenario D is particularly relevant right now — it does not require the sectoral annexures to be finalised, because it links the interest rate directly to a company’s CCTS GEI performance metric, which is already defined by BEE. Any Indian lender can structure an SLL today using the CCTS GEI target as the Key Performance Indicator. When the company outperforms its GEI target (confirmed by the ACVA-verified Form A), the interest rate falls by the agreed ratchet. When it misses, the rate rises. This instrument is available immediately, requires no taxonomy annexure, and directly incentivises the behaviour that CCTS is designed to mandate.
Sector-by-sector eligibility — what qualifies and what remains uncertain
| Investment activity | Sector | Taxonomy tier (expected) | CCTS GEI data as TSC evidence | Status pending sectoral annexures |
|---|---|---|---|---|
| Captive solar or open access RE for smelter or mill | Aluminium, Steel, Fertilisers | Tier 1 — Climate Supportive | CCTS Scope 2 GEI reduction verifiable by ACVA | High confidence eligible — RE is unambiguously Tier 1 across all taxonomies globally; sectoral annexure unlikely to restrict this |
| Waste Heat Recovery (WHR) power generation | Aluminium, Steel, Cement (deferred) | Tier 1 — Climate Supportive | WHR reduces Scope 2 GEI; ACVA-verified CCTS data confirms reduction | High confidence eligible — directly avoids coal captive plant generation; well-established technology globally |
| EAF steelmaking (100% scrap, captive RE) | Steel | Tier 1 — Climate Supportive | EAF GEI <0.3 tCO₂/t; CCTS verified if covered entity | Strong candidate for Tier 1 — India’s Green Steel Taxonomy (Dec 2024) already classifies 5-star green steel similarly |
| EAF steelmaking (grid electricity, not RE) | Steel | Tier 2 — Emission Intensity Reduction | EAF GEI 1.2–1.4 tCO₂/t vs BF-BOF 2.36 tCO₂/t; CCTS GEI data proves reduction | Likely Tier 2 — significant GEI improvement vs baseline but not zero-carbon; TSC threshold will specify minimum reduction required |
| Aluminium smelter 25–50% RE blend | Aluminium | Tier 2 — Emission Intensity Reduction | CCTS Scope 2 GEI falls by 3–6 tCO₂/t from 25–50% RE; ACVA-verified Form A confirms | Likely Tier 2 — significant improvement from baseline; proportion of RE and resulting GEI will set TSC eligibility level |
| Green ammonia (electrolysis-based) | Fertilisers | Tier 1 — Climate Supportive | Green H₂ from RE produces near-zero Scope 1; CCTS offset mechanism can register green H₂ projects for CCCs | Strong Tier 1 candidate — aligns with 8 approved CCTS offset methodologies including green hydrogen; international green bond market already finances similar projects |
| N₂O abatement at nitric acid plants | Fertilisers | Tier 2 — Emission Intensity Reduction | N₂O reduction verified via CCTS offset methodology; GEI improvement quantified in tCO₂e/t fertiliser | Likely Tier 2 — direct GEI reduction with measurable climate benefit; low-cost abatement makes strong financial case alongside taxonomy eligibility |
| BF-BOF modernisation (efficiency upgrades only) | Steel | Transition — subject to credible plan | CCTS GEI trajectory required; must show target compliance and improvement pathway to Phase 2 | Pending TSC definition — will require a company-level Transition Plan with net-zero commitment and milestones; no new BF-BOF greenfield capacity expected to qualify |
| CCUS pilot plants | Steel, Cement (deferred) | Transition — innovation category | Limited CCTS relevance at pilot scale; but CCTS voluntary offset methodology may apply if carbon removal is verified | Likely eligible as transition innovation — DST CCUS testbeds with UltraTech and JSW (May 2025) will set the precedent; commercial scale eligibility will depend on verification standards |
IEEFA’s analysis of India’s draft taxonomy (May 2025) explicitly recommends that BEE’s GEI Emission Intensity Targets should directly inform the taxonomy’s Technical Screening Criteria. This recommendation, if adopted in the sectoral annexures, creates a direct and extremely valuable linkage for industrial companies. It means: every company that completes CCTS-compliant MRV and submits an ACVA-verified Form A has simultaneously produced the primary evidence document that taxonomy eligibility requires. The GEI data, verified by an accredited third party, compared against a notified government target, for two compliance years — this is precisely the performance measurement and verification infrastructure that Technical Screening Criteria will demand. Companies treating CCTS compliance and green finance eligibility as separate workstreams are duplicating effort they need not duplicate. The CCTS Form A is the taxonomy application. The ACVA is the taxonomy verifier. The BEE GEI target is the Technical Screening Criterion. Structure your CCTS compliance programme as if it is also your taxonomy documentation programme — because it is.
The fragmentation problem — and why it matters for industrial borrowers
India’s sustainable finance landscape currently has multiple overlapping definitions of green that create genuine confusion for industrial companies seeking preferential financing. SEBI’s green debt guidelines standardise green bond issuance but do not cover hard-to-abate sectors comprehensively. The RBI’s Green Deposits Framework and Priority Sector Lending norms for green activities use their own criteria. India’s Green Steel Taxonomy (December 2024) uses the 3-star to 5-star rating system. The new DEA Climate Finance Taxonomy uses a different tier structure. And international standards — ICMA Green Bond Principles, Climate Bonds Initiative (CBI), EU Taxonomy for foreign investors — add further layers.
For a steel company treasurer trying to issue a transition bond, this fragmentation creates a practical problem: which standard does the bond prospectus cite, which verifier assesses conformance, and which investor base does it target? The answer today is that most large Indian industrial green bond issuers use ICMA Green Bond Principles as the base standard — because this is what international investors recognise — supplemented by a second-party opinion from a recognised sustainability rating agency (KPMG, Sustainalytics, or similar). The DEA taxonomy, when finalised with sectoral annexures, will add a third layer of national credibility that can be cited alongside ICMA. The ideal situation — which requires the sectoral annexures to be released — is for DEA taxonomy alignment to be the primary standard with ICMA as the secondary international comparator.
Three actions are available immediately, before the sectoral annexures are released. First, structure any CCTS compliance investment — RE procurement, WHR, EAF capex — with a green or transition finance overlay from the outset. Even if the taxonomy annexures are not yet final, securing a second-party opinion from a recognised verifier that the investment is aligned with ICMA Green Bond Principles and the draft DEA taxonomy direction is possible today and positions the company to issue a green or transition bond when the annexures provide the final classification. Second, use the SLL (Sustainability-Linked Loan) instrument now — it requires no taxonomy annexure because it links directly to CCTS GEI targets that are already officially notified. Any Indian lender can structure this today. Third, track the DEA taxonomy sectoral annexure development actively — the consultation closed June 2025 and the annexures are expected to follow the framework release. When they are published, the classification of specific activities will determine whether existing investments are retroactively eligible for green refinancing at lower rates.
Frequently Asked Questions
What is India’s Climate Finance Taxonomy and what is its current status?
India’s Department of Economic Affairs (DEA) published the Draft Framework of the Climate Finance Taxonomy in May 2025, following Finance Minister Sitharaman’s Union Budget FY2024-25 announcement. The draft was open for public consultation until June 25, 2025. As of April 2026, the draft is post-consultation but the final framework with sectoral annexures — which will specify the Technical Screening Criteria determining actual investment eligibility in each sector — has not yet been released. The taxonomy aims to facilitate approximately USD 250 billion per year in climate-aligned finance. It covers power, mobility, buildings, agriculture, food security, water security, and hard-to-abate sectors including iron, steel, aluminium, and cement. Activities are classified into three categories: Climate Supportive Tier 1 (directly green), Climate Supportive Tier 2 (reducing emissions intensity), and Climate Transition (hard-to-abate sectors where zero-carbon alternatives are not yet viable).
What financing cost saving does taxonomy alignment actually deliver for industrial companies?
Taxonomy-aligned green or transition bonds typically price 20 to 80 basis points below equivalent conventional bonds — the greenium. For Indian industrial companies in hard-to-abate sectors, the achievable greenium is currently at the lower end of this range (approximately 20 to 40 basis points) because India’s taxonomy is new and sectoral annexures are pending. Sustainability-Linked Loans (SLLs) tied to CCTS GEI targets offer 15 to 25 basis points rate improvement when targets are met, with an equivalent penalty when missed. On concrete numbers: a Rs 500 crore EAF plant financed with a 30-basis-point greenium saves approximately Rs 1.5 crore per year in interest — Rs 18 crore over a 12-year project life. A Rs 800 crore aluminium RE project with a 50-basis-point green bond greenium saves approximately Rs 4 crore per year — Rs 60 crore over 15 years. Large green ammonia projects accessing international green bond markets may achieve 70 to 80 basis points, representing Rs 14 to 16 crore per year on a Rs 2,000 crore project.
How does CCTS GEI data connect to taxonomy eligibility?
IEEFA’s analysis of the draft taxonomy (May 2025) explicitly recommends that BEE’s GEI Emission Intensity Targets should directly inform the taxonomy’s Technical Screening Criteria. If adopted, this creates a direct and highly valuable linkage: every company that completes CCTS-compliant MRV and submits an ACVA-verified Form A has simultaneously produced the primary evidence document for taxonomy eligibility. The CCTS GEI data — verified by an accredited third party, compared against a notified government target — is precisely the performance measurement and verification that Technical Screening Criteria will require. Companies that have invested in CCTS compliance infrastructure have therefore also built the foundation for taxonomy-aligned green bond or transition bond issuance without additional data collection effort.