The EU ETS carbon price decreased during the period of the Hormuz Strait closure.

Omissions

• The significant decline in EU ETS carbon prices (from ~€92/t to ~€74-75/t) occurred largely between mid-January and early March 2026, BEFORE the Strait of Hormuz closure began on 4 March 2026.
• During the actual closure period (4 March to the session date of 19 May 2026), carbon prices appear to have been relatively rangebound or slightly recovering, rather than declining.
• Available price data for the exact closure period is limited and comes from secondary financial data platforms rather than primary official sources; intra-period volatility cannot be fully assessed.
• Most sources consulted were published after the session date, meaning the MEP could not have cited them directly.

Sources

• PrimaryCongress.gov / CRSBeginning on March 4, 2026, Iranian forces have declared the Strait 'closed,' threatening and attacking vessels.
• SecondaryFactCheck.orgAbout 20 million barrels per day of crude and other oil products were transported through the strait in 2025. That has slowed 'to a trickle' since the March 2026 closure.
• SecondaryGMK CenterOn January 15–16, 2026, the price was €92/t, which is more than a two-year high.
• SecondaryTradingEconomicsEU Carbon Permits increased to 74.80 EUR, the highest since March 2026. EU Carbon Permits increased to 77.46 EUR, the highest since April 2026. EU Carbon Permits fell to 76.04 EUR on June 9, 2026.
• SecondaryICAP Carbon ActionAverage secondary market price (2025): EUR 74.35 (USD 84.01). Average auction price (2025): EUR 73.43.