UK ETS Comes For Waste | Incineration’s Carbon Bill Means And Recycling

The UK ETS expansion into waste incineration is the most consequential repricing of disposal economics this country has seen in a generation.

On 21 July 2025, the UK ETS Authority published its interim response setting out how energy-from-waste and waste incineration facilities will be brought into the scheme. A voluntary monitoring, reporting and verification period began on 1 January 2026. Full inclusion was originally pencilled in for 2028.

The detail is technical. The implication is not.

From the end of this decade, burning waste will carry a carbon cost. That cost will work its way through gate fees, contracts and disposal decisions until it lands on whoever puts material into the residual stream.

What The UK ETS Expansion Actually Covers

The UK Emissions Trading Scheme already prices carbon for power generation, aviation and energy-intensive industry. Bringing waste incineration inside its perimeter is a significant extension.

The scheme will apply to facilities processing three or more tonnes per hour of non-hazardous waste, or ten or more tonnes per day of hazardous waste. Clinical waste incinerators fall within scope. High-temperature hazardous waste incinerators do not.

The MRV phase that began on 1 January 2026 is voluntary. Operators who opt in spend two years measuring and reporting the fossil-derived portion of their emissions before any obligation to purchase allowances begins.

Fossil Versus Biogenic Carbon

The distinction between fossil and biogenic carbon matters here.

Food, paper, garden waste and other organic material count as carbon-neutral under standard accounting conventions. Plastic and other fossil-derived materials do not.

The UK ETS, in other words, is a tax on the fossil carbon embedded in residual waste. Not on waste generically.

The Cost Picture For UK Recycling And Disposal

The Department for Energy Security and Net Zero has modelled an intermediate-case price of around £98 per tonne of fossil CO₂ by 2028. Independent analyst forecasts have settled in a slightly lower range, typically £60 to £80 per tonne, depending on market conditions and whether the UK ETS ends up linked to the EU equivalent.

The rule of thumb the industry has settled on is straightforward enough.

One tonne of residual waste, when burned, produces roughly one tonne of CO₂. Around half of that is fossil-derived.

Ceres has modelled the gate fee implications and estimates an increase of around fifty per cent. That works out at roughly £48 per tonne.

What It Looks Like At Facility Scale

The arithmetic at facility scale is sobering.

A plant emitting 50,000 tonnes of fossil CO₂ a year would face an annual allowance bill of around £3.5 million at £70 per tonne. None of this will be absorbed by operators.

The costs flow downstream through gate fees. The parties who ultimately pay are local authorities, manufacturers, retailers and commercial waste producers. The carbon bill, in effect, is handed to whoever is putting fossil material into the residual stream.

The more fossil carbon in the mix, the bigger the invoice.

Why Plastic Sits At The Heart Of The UK ETS

The UK ETS lands hardest on plastic, and that is not an accident of design.

Plastic is by some margin the dominant source of fossil carbon in the UK residual waste stream. Biogenic materials in the same stream trigger no allowance cost. The financial incentive the scheme creates is therefore narrowly and disproportionately directed at keeping plastic out of energy-from-waste.

It does not sit alone. Packaging Extended Producer Responsibility, the Plastic Packaging Tax and the forthcoming Deposit Return Scheme all point the same way. The UK ETS is the latest lever in a sequence of policies aimed at the same target.

Plastic in the wrong place is becoming progressively, deliberately and explicitly more expensive.

At Let’s Recycle It, we have argued for some time that the economic case for diversion was strengthening faster than many waste producers seemed willing to acknowledge. The UK ETS expansion brings that argument to a head.

The pEPR And UK ETS Intersection

The most underappreciated detail in the interim response is the way the UK ETS interacts with packaging EPR.

From 2028, pEPR fees will incorporate UK ETS carbon costs where packaging waste ends up incinerated. That has a specific consequence for brand owners and packaging producers.

They will pay twice for packaging that reaches an EfW gate. Once through their base pEPR fee. Again through the carbon cost embedded in disposal.

We covered the structure of the pEPR base fees earlier this year, and the broad direction was already clear then. What the UK ETS adds is a second, compounding cost signal aimed at exactly the same actors.

For anyone in packaging-heavy industries reading this, the question is no longer whether to plan for a future in which plastic must demonstrably reach recycling rather than incineration. It is how quickly the plan can be put in place.

The Risks Worth Watching

A clear-eyed view of the UK ETS expansion has to include its complications. There are three worth flagging.

The first is carbon leakage to landfill. Raising the cost of incineration without proportionate action on landfill creates a perverse incentive for material to flow to landfill instead, which would undermine the policy’s environmental purpose entirely. The UK ETS Authority has flagged the risk and is working to manage it, but the gap between incineration and landfill economics is something the sector will need to track closely.

The second is export leakage. Higher domestic gate fees will encourage some waste producers to look overseas. Tightening international rules on plastic waste shipments mean that route is becoming more, not less, regulatory complex.

The third is the deadline itself. The interim response softened the firm 2028 commencement date, replacing it with an open-ended MRV period. That regulatory ambiguity creates space for waste producers to defer the conversation.

Deferring would be a strategic mistake. The economics are coming whether or not the precise start date holds.

What The UK Recycling Sector Should Be Doing Now

The MRV phase running through 2026 and 2027 is not a waiting room.

It is the moment to map fossil-carbon exposure, to model post-2028 disposal costs and to renegotiate contracts that will still be running when full inclusion arrives. Waste producers who quantify their exposure now will be in a far better position than those who wait for the first invoice to clarify the problem for them.

For the recycling industry, the implication is straightforward. Material that would have gone to incineration in 2027 will increasingly seek a recycling route in 2028 and beyond.

The infrastructure, the logistics capacity and the placement relationships needed to absorb that material do not appear overnight. At Let’s Recycle It, we are preparing on the assumption that diversion volumes will be meaningful, and that suppliers will increasingly want partners who can demonstrate fully traceable, compliant routes for their plastic streams.

The next milestone worth tracking is the UK ETS Authority’s second response, expected before full inclusion. It will set out the cost pass-through mechanisms and any phased free-allowance approach. Those details will determine how steeply the gate fee curve rises in the early years of the scheme.

The Direction Of Travel Is Set

The UK ETS expansion is, in many respects, the moment when the principle that waste should be priced by its true environmental cost stops being a slogan and becomes a line on a balance sheet.

At Let’s Recycle It, we have long believed that recycling’s commercial case would eventually catch up with its environmental one.The years ahead will test how ready the sector, and its customers, are for that arithmetic to bite.