The EU Emissions Trading System 2 (ETS 2) extends carbon trading in the European Union to buildings and road transport. The European Commission names 2028 as the year in which the system is meant to be fully operational. For tenants and students, the practical question is what this means for heating and fuel prices, and which details are already confirmed.
Short answer: The EU ETS 2 covers buildings and road transport. The European Commission names 2028 as the year of full operation, while monitoring and reporting already start in 2025. A market stability reserve can release additional allowances in the first two years of operation if the price exceeds 45 euros (2020 prices). Last updated: November 2026.
The most important points in brief
- ETS 2 is the second EU emissions trading system and covers buildings and road transport.
- The Commission names 2028 as the year of full operation. It does not name an exact date for additional costs.
- According to the Commission, monitoring and reporting of emissions already begin in 2025.
- A market stability reserve is meant to release additional allowances in the first two years if the price exceeds 45 euros in 2020 prices or rises too quickly.
- The legal basis is Directive (EU) 2023/959 of 10 May 2023, which amends Directive 2003/87/EC.
- Whether a carbon price reaches your heating bill depends mainly on how costs are split between landlord and tenant.
What ETS 2 regulates
ETS 2 is the second emissions trading system of the European Union. The idea behind it is that emissions from buildings and from transport receive a market of their own, in which allowances are traded. The number of available allowances is limited, and their price forms on the market. This limit is meant to bring emissions down over the years.
It is not a fixed levy, even though both instruments aim at the same climate target. The national carbon price that you may know from the debate about heating and fuel follows its own price path. The article CO2-Preis 2027 explains that path in more detail. The two systems should not be confused, because they are calculated separately and act through different channels.
Which key facts are confirmed?
The table summarises the statements on the European Commission page about ETS 2, retrieved on 2 November 2026. A detail that does not appear on that page is not mentioned here either.
| Point | Statement | Source and retrieval |
|---|---|---|
| Full operation | 2028 | European Commission, retrieved 2 November 2026 |
| Monitoring and reporting | from 2025 | European Commission, retrieved 2 November 2026 |
| Market stability reserve | release of allowances in the first two years of operation if the price exceeds 45 euros (2020 prices) or rises too quickly | European Commission, retrieved 2 November 2026 |
| Legal basis | Directive (EU) 2023/959 of 10 May 2023 | European Commission, retrieved 2 November 2026 |
The Commission speaks of 2028 as the year of full operation, not of an exact day. Anyone looking for a date for concrete additional costs will not find one on this page. Price development also depends on the supply of allowances and on demand, and neither can be predicted reliably today. Any figure for the coming years would therefore be speculation.
How does ETS 2 affect heating costs?
Whether a carbon price shows up in your heating bill depends on how it is distributed. For rented homes in Germany, the CO2 Cost Sharing Act (CO2KostAufG) sets out that the landlord bears part of the CO2 costs. The share depends on how much carbon dioxide the building emits per square metre of living space per year. The higher the emissions, the larger the landlord share, and in the highest band the landlord bears the clear majority.
For tenants this means that heating costs depend not only on the price, but also on how the landlord reports CO2 costs in the annual statement. Under section 7 of the act, the landlord must show the tenant share in the heating cost statement, including the building classification and the calculation basis. If this information is missing or the share is not determined, the tenant may reduce his or her share of the heating costs by 3 percent. This rule is part of the law in force.
The annual statement is therefore the place to check. See whether a CO2 share is shown separately, which band the landlord applies and how the consumption values were calculated. Anyone who can follow these figures will quickly see whether a statement is complete.
What does ETS 2 mean for drivers?
Road transport follows a similar logic. Transport emissions receive a price through the system, and this price can affect fuel costs. How strongly this reaches the petrol station depends on many factors, such as the crude oil price, taxes and competition between providers. A single figure for the petrol price therefore cannot be stated responsibly.
The Commission page retrieved here contains no forecast for fuel prices. Anyone planning expenses should not work with a single estimate, but observe price development over several months and set a realistic figure for their own mileage. For students on a tight budget, it also helps to compare routes, for example whether bus, train or bicycle is enough for daily life.
The market stability reserve as a price brake
The Commission describes a separate, rule-based market stability reserve. In the first two years of operation it is meant to release additional allowances if the price exceeds 45 euros in 2020 prices or rises too quickly. This does not mean a fixed price cap, but a mechanism that increases supply when prices move sharply.
For consumers, this matters mainly because it is meant to dampen sharp price spikes. Whether the mechanism takes effect in a particular year depends on the price level, which cannot be predicted today. The reserve is therefore an instrument whose effect can only be judged precisely in hindsight.
Which timeline applies to students and tenants?
- From 2025: monitoring and reporting of emissions begin, according to the Commission.
- In the first two years of operation: the market stability reserve can release additional allowances if the price passes the threshold.
- 2028: the system is meant to be fully operational, according to the Commission.
For students, the timeline matters mainly if a rental contract runs longer than the next two years. Anyone signing a contract with a landlord in 2027 should raise the heating cost arrangement in the contract and ask how advance payments will be adjusted if costs change.
Frequently asked questions
Is ETS 2 the same as the national carbon price?
No. The national carbon price is a separate instrument with its own price path. ETS 2 is an EU system that, according to the Commission, is meant to be fully operational in 2028. The article CO2-Preis 2027 (in German) describes how both instruments work together.
From when will tenants pay more?
The Commission does not name a fixed day for additional costs. What is confirmed is the year of full operation, 2028. Whether and when individual costs appear in your heating statement only becomes visible in the statement of the respective year, and the amount depends on the price and on the split between landlord and tenant.
Do I have to register as a private person?
The Commission page retrieved here does not mention a registration duty for private persons. Anyone with a question about concrete obligations should contact the competent federal ministry or the responsible environmental authority, which can explain the national implementation in binding form.
What is the market stability reserve?
The market stability reserve is a rule-based mechanism. It releases additional allowances in the first two years of operation if the price exceeds 45 euros in 2020 prices or rises too quickly. It is meant to dampen strong price spikes without setting a fixed maximum price.
Where can I find the legal text?
The Commission names Directive (EU) 2023/959 of 10 May 2023 as the legal basis. It amends Directive 2003/87/EC and Decision (EU) 2015/1814 on the market stability reserve. The full text is published in the Official Journal of the European Union.
What you can do now
- Place your current heating cost statement next to this article and note whether a CO2 share is shown separately.
- Check which band the landlord applies to the CO2 costs and whether the information under section 7 of the act is complete.
- Follow the publications of the European Commission and of the competent federal ministry until full operation in 2028.
- If the statement raises questions, clarify them with the landlord first before withholding any part of the payment.
Related reading
- Climate, Energy and Costs 2027: The overview for tenants and students
- CO2-Preis 2027: What the price corridor means for heating and fuel
- Klimageld 2027: What is settled and what is still open
- Building Modernisation Act: What changes for tenants when heating
Sources: European Commission: ETS2, Buildings, Road Transport and Additional Sectors (retrieved 2 November 2026). Details on the tenant share of CO2 costs are based on the CO2 Cost Sharing Act, section 7 (German text).
Last updated: November 2026. This guide is general information, not individual advice.
