The UK Emissions Trading Scheme (UK ETS) Authority has confirmed that waste incineration and energy-from-waste (EfW) facilities will not be brought into the full carbon trading scheme from 1 January 2028, overturning the timetable previously set out for the sector.
The announcement, published on 26 August 2026, does not cancel the intended expansion. Instead, it leaves the date for full inclusion, the final policy design and the route to carbon-cost exposure to be determined in a later Authority response. The Authority has said the sector will be given adequate time to implement the eventual requirements.
For operators, local authorities and commercial waste customers, the immediate effect is a removal of the assumed 2028 deadline for purchasing and surrendering UK ETS allowances. However, it would be premature to treat this as the end of carbon pricing risk for residual waste treatment. The policy direction remains towards bringing eligible waste incineration and EfW emissions into the scheme; the timing and detailed obligations are what have changed.
What has changed
Previous UK ETS policy development envisaged a monitoring, reporting and verification-only transition from 2026, followed by full inclusion from 2028. Full inclusion was expected to place the carbon obligation on facility operators, who would need to account for relevant emissions and surrender allowances.
The latest update confirms that the full scheme will not start for waste incineration in 2028. No replacement commencement date has been announced. The Authority intends to publish a second response setting out the final approach before the sector is included.
This is an important distinction for financial planning. There is currently no new statutory commencement date for allowance surrender by EfW and waste-incineration operators as a result of the August update. Equally, contracts and business cases should not assume that carbon costs have been permanently avoided. They should instead be designed to accommodate a future start date and potentially changing rules on scope, calculation and cost pass-through.
Voluntary MRV continues
The voluntary monitoring, reporting and verification (MRV) period began on 1 January 2026. It remains voluntary at this stage. Participating operators do not face an onboarding fee or regulator upkeep charge for the voluntary period, and there is no penalty for choosing not to participate.
Participation is nevertheless intended to help facilities establish emissions data, understand prospective carbon exposure and test the operational processes needed for a later mandatory regime. The Environment Agency’s guidance explains that an operator taking part should prepare a voluntary monitoring plan, monitor emissions in accordance with it and submit an annual emissions report to its regulator. Verification of the annual report is encouraged rather than stated as a compulsory condition of the voluntary period.
The voluntary arrangements cover combustion and process emissions associated with EfW and waste incineration. In England, published guidance identifies facilities incinerating non-hazardous waste above 3 tonnes per hour, or hazardous waste above 10 tonnes per day, as within scope for the voluntary activity. Clinical waste is included, while certain high-temperature hazardous-waste installations meeting specified operational and feedstock conditions are excluded from the voluntary period.
The Authority has selected an integrated emissions-monitoring approach combining carbon-14 analysis and emissions factors. This matters because only the fossil-derived element of carbon dioxide from mixed waste is central to prospective ETS exposure. Good feedstock records, sampling arrangements, laboratory assurance and traceable data controls are therefore likely to remain valuable even while participation is voluntary.
Who is affected
- EfW and waste-incineration operators need to reset compliance implementation programmes that were built around a 2028 start, while preserving the capability to monitor fossil carbon emissions and respond quickly once final rules are published.
- Local authorities with long-term residual-waste treatment contracts should revisit affordability models, indexation mechanisms, change-in-law clauses and the allocation of any future UK ETS-related charges.
- Commercial waste producers should assess whether treatment contracts allow future carbon costs to be passed through, and consider how waste prevention, segregation and reduced fossil-plastic content could affect longer-term exposure.
- Lenders, investors and developers should update assumptions used in valuations, refinancing and investment cases. A delayed start may defer anticipated costs, but it also prolongs uncertainty over the final design.
- Clinical and hazardous-waste stakeholders should note that the voluntary scope is not necessarily the final scope. The Authority has said final decisions will be set out in its later response.
Northern Ireland requires separate treatment
Organisations operating across the UK should avoid assuming a single compliance position. The UK ETS Authority has confirmed that the EU ETS applies to energy-from-waste installations in Northern Ireland under the Windsor Framework arrangements. DAERA states that mandatory EU ETS monitoring and reporting for the relevant Northern Ireland activity took effect on 1 January 2024, while work on transposition continues.
That means the delay to the planned Great Britain-wide UK ETS waste expansion should not be used as a proxy for Northern Ireland obligations. Operators and contracting authorities with facilities or waste flows in Northern Ireland should take Northern Ireland-specific regulatory advice and continue to engage with DAERA.
Practical next steps
- Reforecast, rather than remove, carbon costs. Replace a fixed 2028 allowance-cost assumption with scenario ranges covering a later start date, allowance-price volatility, fossil-carbon content and possible pass-through routes.
- Review contracts now. Check waste-treatment agreements, PPP/PFI documentation, supply contracts and gate-fee formulas for carbon-price, regulatory-change, benchmarking and dispute provisions.
- Maintain MRV readiness. Operators not participating should compare the cost of voluntary participation against the value of building reliable baseline data and internal capability before the future mandatory scheme.
- Improve waste-composition intelligence. Strengthen data on plastics and other fossil-derived material in residual streams, as well as sampling, records management and governance over emissions calculations.
- Monitor the second Authority response. The outstanding response is expected to provide the definitive timetable and policy design. Until then, organisations should distinguish clearly between existing voluntary guidance, announced policy intent and any future legal obligations.
The delay gives the sector more time, but not a final answer. Sensible planning now means retaining flexibility: avoid treating 2028 as a live legal deadline, while ensuring that future carbon compliance remains embedded in commercial, operational and investment decisions.
Further information is available from the UK ETS Authority’s waste scope expansion update, the Environment Agency’s voluntary MRV guidance and DAERA’s Northern Ireland policy information.