China's 2027 carbon market expansion could reshape the cost curve for petrochemicals

Policy signals from China's Ministry of Ecology and Environment (MEE) in September and October 2026 have reinforced 2027 as a key milestone for expanding the national emissions trading system (ETS) to petrochemicals, chemicals and other industrial sectors.

For producers, buyers and trading companies, the key considerations are which businesses will be covered and how carbon intensity will affect production costs, supplier competitiveness and the economics of China's petrochemical trade.

| Which Sectors Will Enter First?

China's petrochemical and chemical industries are unlikely to be covered in their entirety from the outset. The expansion is expected to follow a phased approach, prioritising sectors with concentrated emissions, established reporting systems and relatively comparable production processes.

Refining and ethylene appear to be the strongest candidates for early inclusion. Synthetic ammonia, methanol and calcium carbide are also likely to be considered, while PX, PTA and specialty chemicals may follow later given their diverse products and more complex production processes.

This prioritisation reflects the industry's emissions structure. Five major subsectors: refining, methanol, nitrogen fertiliser, calcium carbide and ethylene - together account for nearly 60% of petrochemical and chemical sector emissions, making them important targets for carbon-market expansion.

However, 2027 should be viewed primarily as an industry-entry and preparation milestone, not the immediate start of allowance surrender.

Companies will need to go through emissions reporting, data verification and the establishment of sector-specific allocation rules before full compliance takes effect. This creates a preparation window for producers to understand their emissions exposure and assess potential cost implications.

| How Will Different Production Routes Be Affected?

The most important uncertainty is not simply the level of carbon prices, but how allowance benchmarks will be designed for different production processes.

The same petrochemical product can have significantly different carbon footprints depending on its feedstock and production technology. Ethane-based cracking, naphtha cracking and coal-based olefin production, for example, have markedly different emissions profiles.

Based on indicative industry emissions estimates and current carbon-market prices, the theoretical carbon-cost difference between ethane-based and coal-based ethylene production could exceed RMB 530 per tonne.

This highlights a key policy question: Will China apply a common emissions benchmark to each product, or establish separate benchmarks for different production routes?

A unified benchmark could place greater cost pressure on more carbon-intensive producers, while route-specific benchmarks would make allowance allocation more complex. The final design will determine how emissions differences translate into actual allowance surpluses, deficits and production costs.

For an industry already facing tight margins, even a gradual increase in carbon costs could further differentiate the economics of competing production routes.

Carbon pricing may therefore become a new variable in determining the relative competitiveness of China's petrochemical producers.

| How Could Carbon Costs Affect Procurement and Trade?

The impact of carbon-market expansion will extend beyond producers directly covered by the ETS.

For buyers and trading companies, traditional supplier comparisons have focused on ex-plant prices, product quality, brand and freight costs. Going forward, production technology, emissions intensity and potential allowance exposure could become additional factors in procurement decisions.

Lower-carbon and integrated production facilities may gain an advantage in cost management and access to customers with more demanding carbon-data requirements. Older, more carbon-intensive facilities, meanwhile, could face increasing cost pressure.

Freight costs have traditionally influenced where petrochemical products flow. Carbon costs could increasingly become another factor in that equation.

Carbon data is also moving beyond back-office compliance. Facility-level emissions records, product carbon-footprint assessments and traceable emissions information could become increasingly important in supplier qualification, product pricing and export transactions.

For buyers and traders, the ability to assess a supplier's carbon exposure may become just as important as comparing its headline product quotation.

| What Should Companies Prepare For?

The immediate financial impact may remain limited if initial allowance arrangements are relatively generous. Longer-term exposure, however, will depend on benchmark stringency, carbon-price movements and the treatment of different production routes.

Producers should begin improving facility-level emissions records and assessing potential allowance exposure. Buyers and trading companies should also consider incorporating supplier carbon intensity into procurement assessments and pricing models.

China's carbon-market expansion is not simply a new compliance requirement. It could become a structural factor in determining which petrochemical production routes remain competitive.

| What to Watch in GL Consulting's November China Policy Perspective

GL Consulting's November 2026 edition of China Policy Perspective will provide a deeper assessment of China's carbon-market expansion and its implications for the petrochemical and chemical industries.

The full report will examine:

• Sector exposure: Which subsectors and production facilities are most likely to be included in the initial expansion?
• Allowance allocation: How could different benchmark designs affect production routes and potential allowance balances?
• Cost implications: How could alternative carbon-price and allocation scenarios affect refining and ethylene margins?
• Market implications: How might carbon costs influence product pricing, supplier competitiveness and regional trade flows?

For companies with exposure to China's petrochemical and chemical markets, understanding how carbon costs translate into commercial competitiveness will be essential to preparing for the next phase of market change.

Click here or contact us at inquiries@mysteel.com to arrange a dedicated briefing and request access to the relevant analysis in the November 2026 China Policy Perspective, scheduled for release at the end of November.

Note: This analysis reflects current policy signals and GL Consulting's industry assessment. Carbon-cost comparisons are indicative estimates based on industry emissions data and prevailing carbon prices, rather than actual allowance shortfalls or final compliance costs. Sector coverage, allowance benchmarks and compliance arrangements remain subject to official implementation plans.