Blog
Carbon Market
Does the EU ETS provoke carbon leakage?

Does the EU ETS provoke carbon leakage?

Carbon leakage, where companies relocate to avoid stringent climate policies, undermines emissions reduction efforts. The EU ETS combats this through free allowance allocation and the Carbon Border Adjustment Mechanism (CBAM), ensuring fair carbon pricing and encouraging global climate policy alignment for responsible investment. These sustainable finance policies aim to support investing in sustainable development and reduce the risk for impact companies.

The opposite of a first mover advantage? Being a pioneer in climate policies can be challenging - carbon leakage occurs when companies relocate to regions with less stringent climate policies for financial reasons. The good news is that the European Union Emissions Trading Scheme (EU ETS) improvements are actively combating this phenomenon.

What is carbon leakage?

Carbon leakage occurs when strict climate policies in one region lead to increased emissions in regions with looser regulations. This phenomenon happens as industries relocate to avoid higher compliance costs associated with stringent environmental policies. The result is a net increase in global carbon emissions, undermining the efforts of regions with more stringent regulations. For every 10 tons of carbon emissions reduced in these regions, it is estimated that 0.5 to 3 tons can increase elsewhere due to carbon leakage.

[[cta-nl]]

Sectors at risk of carbon leakage

Certain sectors within the EU ETS are particularly vulnerable to carbon leakage due to their high energy consumption and significant exposure to international trade. These sectors include steel, cement, aluminum, and chemicals. Even if there can be several reasons for such companies to relocate (for example to regions with lower labor costs), the biggest relocation risk engendering carbon leakage is driven by the cost of carbon markets compliance.

Carbon leakage in the EU ETS, empirically

Many academic and institutional studies have documented the actual presence of carbon leakage linked to the EU ETS. Research shows that energy-intensive industries, in particular, have shown a propensity to relocate production outside of the EU to avoid compliance costs. Such papers are confirming that carbon leakage is not just a macroeconomic theory, but a real-life potential risk for the EU’s cap-and-trade system.

[[cta-discover]]

The EU ETS improvements to combat carbon leakage

A first strategy of the EU ETS to address carbon leakage and preserve the competitiveness of European firms, is the allocation of free European Union Allowances (EUAs) to sectors at high risk of carbon leakage. These free allocations help mitigate the additional costs incurred by these sectors due to carbon pricing. Another important mechanism is the introduction of the Carbon Border Adjustment Mechanism (CBAM) in 2023. It aims to level the playing field by imposing a carbon price on imports equivalent to that faced by EU producers. This makes sure that imported goods are subject to similar carbon costs. The CBAM also incentivizes non-EU countries to adopt comparable carbon pricing mechanisms, thus contributing to global climate policy alignment.

There is no such thing as too ambitious climate policies given the urgency of the climate crisis. Fighting climate change should be a collective effort, and the EU ETS ensures the economic viability of the current system while achieving effective decarbonization.

Share this article :

Learn more

Carbon Market

UKAs and EUAs: Why Hold Both When You're Already Invested in European Carbon

If you're already invested in European EUAs, do you need to bother with UK UKAs? Short answer: yes. Long answer: the two markets are correlated at around 80% over time, but that correlation hides distinct dynamics (political, industrial, calendar-based) that make UKAs both linked and differentiated from EUAs. That's precisely what makes the combination interesting: an EUA core for liquidity and depth, a UKA satellite for political catch-up and the associated risk premium. Here's why.

July 13, 2026

Carbon Market

What is the Climate Impact of a UKA? One Tonne of CO₂ Pulled Off the Market, Measured and Verifiable

Holding a UKA does something simple and radical: it takes one right-to-emit tonne of CO₂ off the UK market. Not an offset, not a voluntary credit, not a tree-planting promise. A regulated allowance, accounted for by the State, that exits the system the moment a non-compliance investor holds it. It's what we call an additional climate action: measurable, verifiable, legally framed. Here's how it works, and why this impact is one of the most robust in today's climate-finance landscape.

July 13, 2026

Carbon Market

The UKA-EUA Convergence Play: Anatomy of a Catch-Up in Motion

May 2025, London summit: Keir Starmer and Ursula von der Leyen formally state their intention to link the UK ETS to the European system. A new term has been circulating among carbon analysts ever since: the Convergence Play. The mechanic is simple: UKAs trade today around 20% below EUAs, a discount that has already partially closed since May 2025. The residual mechanical upside is around +20 to +25%. Here's how it works, why it's happening now, and what the Swiss-EU precedent teaches us.

July 13, 2026

What if your savings funded the climate transition?

Homaio is the first platform that allows you to invest in European (EUA) and British (UKA) carbon quotas.

Diversify: integrate climate assets into your portfolio.
Discover Homaio
Finally access investments that combine
financial
 and
environmental
 performance
The Guide to Climate Investing

Investing in the climate without sacrificing performance: an accessible guide to understanding it all.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Free guide
The guide to investing in UK carbon allowances

Understanding the UK carbon market and its potential for investors.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Free guide
Newsletter
The Homing Bird

5 minutes a week to become unbeatable on climate finance.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Simulate your return in 2 clicks

Discover the added value you could have achieved if you had invested in one of our assets 1, 5, or 10 years ago.

Chat with an expert

Need help or more information? Schedule an appointment with our expert, who will be delighted to assist you!