Why EU carbon trading volumes weakened in 2025 despite a still-active compliance market
EU ETS trading volumes softened in 2025 even though the compliance market kept functioning. EEX reported total volumes of 1,316.3 million tonnes of CO2 across European emissions markets, slightly below 2024, while the primary market continued to clear through regular auctions.
That matters because a weaker carbon market turnover does not mean a broken market. It usually means less secondary-market rotation, with buyers and sellers trading more selectively. In practice, that can reflect tighter hedging, lower speculative participation, and more waiting for clearer signals on policy, energy prices, and the macro backdrop.
The regulatory base stayed intact. The European Commission continues to describe EU ETS as Europe’s main carbon pricing mechanism, and auctions still channel significant volumes through EEX in 2026, with proceeds supporting public budgets, the Innovation Fund, the Modernisation Fund, and from 2026 the Social Climate Fund.
For industrial buyers and utilities, the practical point is simple. Lower volumes can make execution harder even when prices are not moving sharply. Bid-ask spreads can become more sensitive, depth can thin out in some maturities, and the timing of purchases matters more.
The key question is whether the 2025 dip was cyclical, technical, or structural. The early-2026 data suggest the market may already be moving into a new phase of activity, which is the right bridge to the next section.
The Q1 2026 surge: what may be driving renewed spot and derivatives activity
Q1 2026 showed a clear rebound in trading activity across the EEX group. EEX said volumes rose significantly, and Reuters linked the move to greater uncertainty in global energy markets. That matters for EUA trading because more uncertainty usually means more demand for price coverage and risk transfer.
The rebound is not just about raw volume. It often reflects a mix of re-hedging by utilities, renewed industrial cover, position rebalancing in futures, and more intraday or spot activity to manage volatility.
The signal looks broader than one product line. EEX said April 2026 activity was supported by GO futures and the related spot markets, which suggests stronger cross-commodity activity across environmental products. That does not prove a permanent regime change, but it does show that market participants were active again.
The compliance backdrop also matters. The European Commission’s verified 2025 EU ETS data showed emissions down 1.3% versus 2024. Lower emissions can change the hedging profile, but they do not remove the need to manage price risk and volatility.
The key question now is which part of the market is leading the rebound, spot or futures. That takes us to market microstructure.
Spot versus futures: how changing trader behaviour can reshape liquidity and price discovery
Spot and futures play different roles in the EUA market. EEX’s EUA spot market is used for immediate execution, while futures and options are the main engine of secondary-market trading.
That distinction matters for buyers. Spot is useful for tactical execution and short-term arbitrage. Futures are more important for procurement planning, compliance coverage, and mark-to-market hedging. When activity shifts toward longer-dated contracts, price formation depends less on daily spot flow and more on the curve.
EEX said EUA options grew to almost 5 million tonnes of CO2 in 2025, while December European futures rose 279% year on year. That suggests the market can recover first in derivatives, not necessarily in spot.
For industrial buyers and utilities, the implication is practical. If more flow moves into futures, spot benchmarks can stay thin while the curve becomes easier to hedge. If spot activity returns, it can point to more immediate hedging needs or short-term trading distortions.
This matters because the balance between spot and futures affects liquidity premium, execution costs, and the quality of price discovery. That is especially important for anyone buying physical EUA or hedging financial exposure.
What lower exchange volumes mean for industrial buyers, utilities, and financial participants
Lower volumes can raise execution costs even when the spot price is stable. That is the main procurement issue for buyers. A thinner market can mean more slippage, more sensitivity to order size, and less room to trade without moving the market.
Industrial buyers should think in terms of carbon budget management. When secondary-market turnover is weaker, it becomes more important to buy earlier, break orders into smaller clips, and use auctions where possible to reduce execution risk versus OTC blocks or market orders.
Utilities and energy wholesalers face a different problem. A less deep market requires more attention to shape risk and to the timing of power-gas-carbon cross-hedging, especially when macro volatility forces inventory targets to be recalibrated.
Financial participants care about signal quality. If liquidity concentrates in a few windows or a small number of maturities, market making becomes more expensive and the EUA curve can reflect policy expectations more than actual permit use.
The deeper issue is whether the turnover dip is temporary or structural. To answer that, you have to look at policy uncertainty, hedging demand, and macro conditions together.
The role of policy uncertainty, hedging demand, and macro conditions in EU ETS turnover
EU ETS turnover is highly sensitive to policy visibility. Changes in the regulatory framework, expectations around supply, and shifts in energy curves can all change how much participants trade.
2026 is especially important because EEX updated the EUA auction calendar for the year after changes linked to the phase-in of the maritime transport sector in EU ETS. Even small changes in auction timing or supply path can affect hedging and execution decisions.
Supply policy still matters. The Commission says part of the auction volume remains reallocated for REPowerEU until August 2026, which keeps the market anchored in a policy-driven supply environment. Desk strategy and risk management both need to reflect that.
Macro conditions are part of the same story. EEX linked the Q1 2026 pickup to higher uncertainty in global energy markets. That is a reminder that carbon does not trade in isolation. It sits inside a broader energy risk stack.
The next question is what international market participants should watch to understand whether this is a short-lived rebound or the start of a new benchmark regime.
What international carbon market participants should watch next in Europe’s benchmark market
The EU ETS benchmark market is now in a reset phase, not a static one. The main signals to watch are the 2026 EUA auctions, the path of verified ETS emissions, and whether the rebound in spot and derivatives trading persists through the year.
Those three indicators help separate a technical bounce from a real liquidity regime shift. If auction flow stays strong, emissions continue to trend lower, and trading activity remains firm, the market may be moving into a new balance.
EEX remains central to EUA spot trading and to a large share of European price discovery. That means buyers and traders outside the EU use it not just to transact, but to read regulatory sentiment and risk structure in the European carbon market.
For global participants, the practical response is clear. Monitor the curve more closely, review hedge ratios, and test whether the spot-futures mix still fits your compliance deadline and carbon budget.
The 2025 volume dip does not point to a weak market in absolute terms. It looks more like a reset in liquidity and participation. The real test in 2026 is whether the rebound is cyclical or the start of a new phase for EU ETS.
