Our proposal

The site lies 1.2km to the north of Heathrow Airport, and just south of the M4 motorway.

Formerly a quarry, the site is currently occupied by Powerday, operating a waste transfer facility, and Foley Haulage, operating an aggregate waste processing facility.

With our new proposal, Powerday would stay on the site and the new AD facility would replace the aggregate waste processing facility.

The facility would have the capacity to generate energy for the equivalent of 8,200 homes by recycling up to 100,000 tonnes of food waste a year from homes and businesses in the most environmentally friendly way possible.

Anaerobic digestion is well-established in the UK and is a reliable technology to transform food waste into renewable energy.

Before we submit a planning application, we’re keen to get the views of the community on our plans.

The government has a strategy to reduce food waste and put any food that is unused to good use, generating renewable energy and helping achieve its goal to eliminate food waste to landfill by 2030.

Following consultation on the government’s 2021 Environment Bill, it’s expected that homes and businesses will be required to separate and recycle food waste, just like they do for cardboard and glass.

Anaerobic digestion facilities will be key to putting this collected food waste to good use. They do it by turning waste into a renewable and reliable supply of gas, and digestate – a compost‑like soil improver.

If approved, the anaerobic digestion facility would be developed on our Holloway Lane site.

It would be comprised of an enclosed processing building, associated treatment tanks, storage facilities, and a two-storey office building.

The building would have a maximum height of approximately 16m. The associated treatment tanks and storage facilities would have a maximum diameter of 32m and a maximum height of approximately 17m. The other stacks and infrastructure are approximately 18m high.

We have emerging plans to enhance biodiversity on the site. We would undertake a landscaping and planting programme once construction was complete to soften and enhance the natural habitat and provide additional screening.

Public consultation

Tuesday 11th February – Monday 24th March

Summer 2025

Submission of our planning application.

Autumn/Winter 2025

Hillingdon Council will consider the application. There will be a further consultation carried out by the Council during this period.

2026/27

Construction to begin if planning permission is granted

2027/28

Anaerobic digestion facility is operational