In Romania, carbon dioxide certificates cost 80 euros per tonne, while in China the price is seven times lower.

Omissions

• The €80 price is the EU-wide EU ETS allowance (EUA) price, identical across all member states, not a Romania-specific price; Romanian installations pay the same price as the rest of the EU.
• The EU ETS price fluctuates: around the session date (June–July 2026) it moved between roughly €78 and €83 per tonne, so €80 is a rounded figure.
• China's national ETS covers mainly the power sector (recently expanded to steel, cement and aluminium), and its price varies by source: ICAP reports an average secondary market price of CNY 70.78 for 2025, while other sources cite CNY 98 (USD 13.70) for 2024 and a 40–100 CNY range; converted to EUR (roughly €9–13), the EU/China ratio is approximately 6x–9x, not exactly 7x.
• No primary official source (Eurostat, European Commission, Chinese government) was retrieved; verification rests on multiple independent market/reference sources.

Sources

• AcademicScienceOpen (Zhang et al., 2025) — The development of China's national carbon marketChina's national carbon price traded in a range of 40–100 CNY (approximately 6–14 USD) per ton, with an average transaction price of 66 CNY (about 9 USD) per ton.
• SecondaryTrading Economics — EU Carbon PermitsEU Carbon Permits increased to 82.67 EUR, the highest since February 2026; EU Carbon Permits decreased to 78.26 EUR, the lowest since June 2026 — i.e., around €78–83 per tonne in June–July 2026.
• SecondaryTake Initiative — EU Carbon Market Allowances: How EUAs Work in 2026On June 17, 2026, EU carbon market allowances traded at approximately €79.79 per tonne, up nearly 7% compared to the same period in 2025.
• SecondaryGMK Center — European carbon prices remain above €70/t in AprilEuropean carbon prices remain above €70/t in April 2026; on April 7, the European Commission officially set the base price for CBAM allowances for the first quarter of 2026 at €75.36 per ton of CO2.
• SecondaryInternational Carbon Action Partnership (ICAP) — China National ETSChina National ETS: Average secondary market price (2025): CNY 70.78 (USD ...) per tCO2e — roughly €9 per tonne at 2025 exchange rates, versus an EU ETS 2025 average secondary market price of EUR 74.35.
• SecondaryCustom Market Insights — China Carbon Emissions Market 2026–2035In 2024, China had an average carbon price of CNY 98 (USD 13.70) per tonne against the EU ETS of USD 80 per tonne in the first nine months of the year.