<- Back
Summary

What are the main characteristics of the EU ETS?

Summary

The EU Emissions Trading System (ETS) is a cornerstone of European green finance and climate policies, using a carbon market to reduce greenhouse gas emissions from key sectors. It has evolved through phases, expanded its scope (including aviation and maritime), and contributed to a significant reduction in emissions, and revisions are coming to make the EU ETS even more effective for decarbonization as Europe pursues carbon neutrality by 2050. The EU ETS allows companies to buy carbon allowances, incentivizing them to lower their emissions.

Return to Blog
Sommaire
Book a call

Since its inception in 2005, the European Union Emissions Trading System (EU ETS) has been a cornerstone of European climate policies.The EU ETS is both a financial mechanism and a regulatory framework to achieve the bloc’s ambitious environmental goals.

What is the EU ETS?

The EU ETS is a market-based approach to constraining and controlling the volumes of greenhouse gas emissions in the economy until carbon neutrality is achieved by 2050. As a cap-and-trade system, it sets a limit (or cap) on the total amount of greenhouse gases that can be emitted by installations covered by the system. To comply with this cap, companies are required to buy and surender carbon allowances, which represent the right to emit one tonne of CO2 each. Every tonne of carbon released is matched to one carbon quota. 

The carbon marketplace

Carbon Allowances (EUAs): EUAs are the tradable financial assets within the EU ETS. Each EUA represents the right to emit one tonne of CO2. There are 2 markets within the scheme. The primary market where EUAs are initially issued by regulators through auctions or allocation processes; and the secondary market, where participants trade these allowances among themselves.

The EU ETS coverage

Initially, the EU ETS covered the industrial sector and power producers. By 2012, the aviation sector was included, and from 2024, the maritime sector was also integrated into the scheme. 

The proven decarbonization impact

The EU carbon trading scheme covers around 40% of the EU’s total emissions. Over the past decade, it has contributed to a 35% reduction in emissions from covered sectors. In 2023 alone, CO2 emissions of covered installations were lowered by more than 16%. 

A long journey towards sustainability 

The phases of the EU ETS 

The EU ETS has evolved through various phases, with different reforms aimed at improving its effectiveness and alignment with increasing climate ambitions:

  • Phase 1 (2005-2007): The initial introductory phase, “setting the rules of the game”, where most allowances were given away for free. 
  • Phase 2 (2008-2012): International offsets were allowed to be used for EU ETS compliance. This, combined with the still high volumes of free EUAs and the impact of the global financial crisis, kept carbon prices low. 
  • Phase 3 (2013-2020): Phase 3 brought about important reforms to address supply-demand imbalances.
  • Phase 4 (2021-2030): The current phase features an accelerated cap reduction and extends the system’s scope to include new sectors and mechanisms.

Improving the scheme’s effectiveness, one reform at a time

Over the years, the scheme has undergone several revisions that have:

  • Balanced the Market, notably with the introduction of the Market Stability Reserve (MSR).
  • Increased Ambition, through the phase-out of free allowances and the increased pace of supply reduction.
  • Expanded Scope with the inclusion of the maritime sector in 2024, for instance.
  • Strengthened International Influence, especially with the introduction of the Carbon Border Adjustment Mechanism (CBAM) in 2023 showing a commitment to global climate leadership.

The EU ETS is here to stay 

Achieving Europe’s climate neutrality goal by 2050 remains an ongoing mission, and there is still some work to do. Despite the progress made so far, there are still some revisions to come that will make the EU ETS even more effective for decarbonization. The building and road transportation sectors will also soon be covered by a carbon pricing scheme. Also, the pace of cap reduction will increase to 4.4% per year starting in 2028, intensifying efforts to meet more ambitious climate targets sooner. 

The EU ETS has come a long way, but the most exciting part of the decarbonization journey is yet to come.

Do you like this article?

Share it with your network and introduce Homaio to those interested in impact investing!

The Homing Bird

A newsletter to help you understand the key challenges of climate finance.

Sign up to our newsletter

Utimate guide to carbon markets

Dive into the world of carbon markets, where economics, finance, and environmental science converge. Get your ultimate guide now.

Thank You !
Find our guide with the following link 👉
Download whitepaper
Oops! Something went wrong while submitting the form.
White Paper homaio

Do you like this article?

Share it with your network and introduce Homaio to those interested in impact investing!

Understanding in depth

Investing in Responsible Funds in 2025: Definition, Labels, Performance, Alternatives
August 26, 2025

Investing in Responsible Funds in 2025: Definition, Labels, Performance, Alternatives

This article provides a comprehensive guide to investing in responsible funds in 2025. It defines responsible funds, explains ESG principles and SRI, and details various investment strategies (Best-in-class, exclusions, shareholder engagement, thematic, impact). It then presents French labels (ISR, Finansol, Greenfin), analyzes the performance and costs of responsible funds, debunking common myths about their profitability. Finally, it addresses the limitations of greenwashing in ESG funds and highlights carbon quotas as an alternative offering a direct and measurable impact on decarbonization, now accessible to individuals via Homaio.

Climate Finance

All About Hydrogen ETFs: Analysis, Comparison, and Outlook
August 26, 2025

All About Hydrogen ETFs: Analysis, Comparison, and Outlook

Hydrogen ETFs offer an accessible and diversified way to invest in one of the key technologies driving the energy transition. These index funds group companies across the hydrogen value chain—producers, fuel cell developers, infrastructure providers—allowing investors to capture growth without betting on a single stock. This article explains how they work, compares leading ETFs available in Europe (like those from Amundi, VanEck, BNP Paribas), and helps you choose based on risk, fees, ESG criteria, and diversification. It also shows how combining hydrogen ETFs with carbon quota investments via Homaio can amplify both climate impact and portfolio resilience.

Climate Finance

Best Investments 2025: The Complete Guide to Investing Smartly
August 26, 2025

Best Investments 2025: The Complete Guide to Investing Smartly

In an uncertain economic climate, this guide helps you choose where to invest in 2025 based on your goals, risk profile, and time horizon. It covers everything from secure options (savings accounts, euro funds) to dynamic tools (life insurance, PEA, real estate, private equity) and introduces high-impact solutions like carbon quotas with Homaio. Whether you’re planning for retirement, buying property, or simply growing your capital, this article provides a clear roadmap to build a balanced, future-ready portfolio that aligns performance with purpose.

Wealth Diversification

Understanding in depth

No items found.

You might also like

Investing in Responsible Funds in 2025: Definition, Labels, Performance, Alternatives
August 26, 2025

Investing in Responsible Funds in 2025: Definition, Labels, Performance, Alternatives

This article provides a comprehensive guide to investing in responsible funds in 2025. It defines responsible funds, explains ESG principles and SRI, and details various investment strategies (Best-in-class, exclusions, shareholder engagement, thematic, impact). It then presents French labels (ISR, Finansol, Greenfin), analyzes the performance and costs of responsible funds, debunking common myths about their profitability. Finally, it addresses the limitations of greenwashing in ESG funds and highlights carbon quotas as an alternative offering a direct and measurable impact on decarbonization, now accessible to individuals via Homaio.

Climate Finance

All About Hydrogen ETFs: Analysis, Comparison, and Outlook
August 26, 2025

All About Hydrogen ETFs: Analysis, Comparison, and Outlook

Hydrogen ETFs offer an accessible and diversified way to invest in one of the key technologies driving the energy transition. These index funds group companies across the hydrogen value chain—producers, fuel cell developers, infrastructure providers—allowing investors to capture growth without betting on a single stock. This article explains how they work, compares leading ETFs available in Europe (like those from Amundi, VanEck, BNP Paribas), and helps you choose based on risk, fees, ESG criteria, and diversification. It also shows how combining hydrogen ETFs with carbon quota investments via Homaio can amplify both climate impact and portfolio resilience.

Climate Finance

Best Investments 2025: The Complete Guide to Investing Smartly
August 26, 2025

Best Investments 2025: The Complete Guide to Investing Smartly

In an uncertain economic climate, this guide helps you choose where to invest in 2025 based on your goals, risk profile, and time horizon. It covers everything from secure options (savings accounts, euro funds) to dynamic tools (life insurance, PEA, real estate, private equity) and introduces high-impact solutions like carbon quotas with Homaio. Whether you’re planning for retirement, buying property, or simply growing your capital, this article provides a clear roadmap to build a balanced, future-ready portfolio that aligns performance with purpose.

Wealth Diversification

You might also like

No items found.