Key Points
- Budget Cap Raised: The 14 councillors sitting on the North London Waste Authority (NLWA) approved new contractual terms with contractor Acciona, raising the cost cap for the Edmonton energy recovery facility (ERF) from £885m to £1.25bn.
- Completion Delayed: The project’s completion date has been renegotiated to December 2029, marking a two-year delay beyond the initial schedule.
- Current Expenditure: A total of £700m has already been spent on the Edmonton Eco Park development since construction began in 2022, following its initial approval in 2017.
- Political Backing: Despite years of opposition, Green Party members on the authority issued a joint statement backing the facility’s completion after stating they had inherited a “poisoned chalice”.
- Cancellation Penalties: According to the NLWA, cancelling the build at this late stage would cost the seven participating boroughs an extra £100m annually by 2030/31 and generate approximately 30,000 additional lorry journeys each year.
- Resident Levy: Once operational, the facility will cost residents roughly £1.50 per week, covering rubbish collections, recycling, and eight recycling centres across north London.
- Workforce Expansion: On-site productivity has reportedly improved, with over 400 skilled workers now operating daily compared to 200 at the start of the year.
Camden (North London News) November 14, 2026 – The cost of a long-delayed new incinerator in north London will balloon to £1.25bn after councillors on the North London Waste Authority (NLWA) agreed to renegotiated terms with contractor Acciona at a quarterly meeting held at Camden Town Hall.
As reported by Local Democracy Reporter Sebastian Mann across The Fitzrovia News, Enfield Dispatch, Barnet Post, and Waltham Forest Echo, the 14 councillors sitting on the NLWA voted to raise the project’s cost cap from £885m to £1.25bn. Alongside the budget increase of more than 40 per cent, the authority pushed the expected completion date back to December 2029—two years later than initially planned.
The NLWA is responsible for managing and disposing of waste generated by approximately two million residents across seven London boroughs: Enfield, Haringey, Barnet, Camden, Hackney, Islington, and Waltham Forest. To date, £700m has already been spent on constructing the energy recovery facility (ERF) at the Edmonton Eco Park.
As reported by Sebastian Mann of The Fitzrovia News, NLWA chief Councillor Jacob Cable explained the authority’s rationale for proceeding with the revised contract:
“At this late stage in construction and taking all the facts into consideration, we have come to the decision that it is in the public interest for the facility to be finished and for the new terms to be agreed. Cancelling the project at this stage would impose significantly greater costs on the boroughs.”
How will the revised contract hold contractor Acciona accountable?
To safeguard public funds following the substantial cost escalation and schedule slippage, the NLWA has restructured its contractual oversight. According to reporting by Sebastian Mann in The Fitzrovia News, Cllr Cable outlined the measures introduced to enforce delivery:
“Members have ensured that the new agreement is robust and binding, with the contractor fully accountable for the delivery and commissioning of the facility. This has been reinforced by in-depth reviews carried out by independent expert advisers as well as auditing of Acciona’s performance, which has led to increased governance and oversight.”
Cllr Cable also addressed long-standing concerns regarding private sector control over municipal waste streams. As reported by The Fitzrovia News, Cllr Cable stated:
“Most importantly, the incinerator will be publicly owned and income earned from the generation of energy will continue to help reduce costs for council taxpayers. There will never be a situation in north London where our boroughs are locked into a contract with a private provider which forces us to supply waste for burning.”
The authority confirmed that on-site construction momentum has recently increased, with more than 400 skilled workers now working at the Edmonton Eco Park each day, double the 200 workers recorded on site at the beginning of 2026.
What would happen if the Edmonton incinerator project were cancelled?
Financial assessments presented to the authority indicated that halting construction would place a heavier fiscal and environmental burden on local councils than completing the build. The NLWA stated that cancelling the ERF would cost the seven boroughs an additional £100m per year by the 2030/31 financial year.
This projected £100m annual penalty would stem from ongoing repayments on existing construction loans combined with the expense of paying private operators to either incinerate north London’s rubbish or deposit it into landfill sites elsewhere. Furthermore, transporting waste out of the area to alternative facilities would require approximately 30,000 extra lorry journeys every year.
Once the new facility is completed and operational, the NLWA estimates the service will cost residents roughly £1.50 per week. That weekly levy is designed to fund household rubbish collections, recycling services, and the ongoing operation of eight reuse and recycling centres across north London.
Why have Green Party councillors and campaigners clashed over the facility?
The decision has highlighted political tensions surrounding waste incineration in north London. Earlier in November 2026, Green Party members on the NLWA board issued a joint statement confirming they backed completing the new incinerator despite years of sustained political opposition to the scheme. As reported by Sebastian Mann in The Fitzrovia News and Enfield Dispatch, the Green leadership stated they had taken the decision after inheriting a “poisoned chalice” that would be financially unviable to cancel.
Meanwhile, environmental campaign groups continue to voice opposition. Organisations such as Stop the Edmonton Incinerator Now (StEIN) have repeatedly expressed concerns that building a larger incinerator could increase demand for burnable waste across the region and release harmful particulate matter into the local air, despite assurances from the NLWA regarding emissions standards.
In response to broader sustainability concerns, Cllr Cable confirmed he had recently written to request government funding support for emerging green technologies. As reported by Sebastian Mann in The Fitzrovia News, Cllr Cable stated:
“Following our decision to complete the ERF, NLWA members will be pushing for significant systemic change to ensure that unsustainable waste and rubbish are reduced as much as possible. This includes ensuring that far less plastic ends up being incinerated. We call on this government to act and urgently ban more unnecessary, tricky-to-recycle plastic.”
Background
The Edmonton Eco Park project—formally part of the wider North London Heat and Power Project—was originally approved in 2017 to replace an ageing existing incinerator at the Edmonton site that first opened in 1969. Main construction work on the replacement energy recovery facility began in 2022.
Over the past several years, the development has encountered persistent construction delays and inflationary pressures across the building sector, pushing the total broader programme budget from £1.2bn to £1.5bn earlier in 2026. Because of the slow progress on the replacement plant, the NLWA announced in January 2026 that the existing 1969 incinerator would be kept operational “up to and beyond” 2030, operating past its original design life until the new facility is fully commissioned. Following the May 2026 local elections, a major reshuffle of the NLWA board saw Green Party councillors assume leadership roles on the authority, inheriting oversight of the partially built facility.
Prediction
For the two million residents and council taxpayers across Enfield, Haringey, Barnet, Camden, Hackney, Islington, and Waltham Forest, the revised December 2029 completion timeline and £1.25bn construction cap carry direct financial and environmental implications over the next three years. Financially, while the NLWA aims to offset long-term costs through energy generation revenues and keep the resident levy at approximately £1.50 per week once operational, the seven constituent borough councils must manage the servicing of increased capital borrowing at a time when local authority budgets across London face acute strain.
Operationally and environmentally, the two-year delay means communities living near the Edmonton Eco Park in Enfield and neighbouring boroughs will experience prolonged reliance on the existing 1969 incinerator until at least 2030, alongside ongoing heavy construction activity on site. However, avoiding cancellation spares local road networks from an estimated 30,000 additional HGV waste-transport journeys annually and shields councils from an immediate £100m annual budget shortfall in 2030/31. If the NLWA succeeds in its stated push for stricter national bans on non-recyclable plastics, residents across the seven boroughs may also see stricter waste-sorting requirements and recycling reforms introduced ahead of the plant’s 2029 opening.
