Q: Where is the facility going to be located?

The Overwood ERF site will be located in South Lanarkshire, Scotland. The site is located at Overwood Farm, on the Dovesdale Complex, approximately 2 km south-east of the village of Stonehouse, situated near the B7078 (Carlisle Road).

Q: Why is the facility required?

The Scottish Government will place a ban on the landfilling of biodegradable waste by December 2025. This date was originally January 2021, but was put back, in part due to the lack of waste treatment infrastructure (including Energy Recovery Facilities) to meet this ban. In 2019, Scotland sent 1.4m tonnes of non-recyclable waste to landfill. If the infrastructure existed, this waste could be sent to an ERF and turned into energy.

Should Scotland not develop enough waste treatment facilities in advance of the December 2025 landfill ban, this will result in Scotland’s non-recyclable waste either being transported to landfill or into ERFs elsewhere in the UK or in mainland Europe.

Q: What happened to the proposed Carlisle Road Resource Recovery Facility?

Dovesdale was previously earmarked for an Energy Recovery Facility by Scotgen. A planning application for the Carlisle Road Resource Recovery Facility (CRRRF) was submitted to South Lanarkshire Council in 2010, approved in February 2011 and has subsequently been implemented in full.

Should Viridor receive planning permission for the Overwood ERF, the implemented permission for the CRRRF will be revoked. This will be secured via a legal agreement between Viridor, South Lanarkshire Council and the landowners.

Q: How much waste would the facility process?

The ERF would process 330,000 tonnes per annum (tpa) of non-recyclable waste.

Q: How much electricity will the facility generate?

The ERF will have the capability to generate 34.1MW of electricity of which 30.7MW will be exported to the Grid, enough to power around 82,200 homes (145,000 homes in South Lanarkshire –

Q: Does Viridor operate similar facilities to this one in the UK?

Yes. As one of the UK’s leading waste management companies, Viridor owns and operates 10 similar ERF facilities throughout the UK including Dunbar, Cardiff and Runcorn.

Q: What are the benefits of the Overwood ERF?

The Overwood ERF will play an important role in turning non-recyclable household and commercial waste into electricity. In doing this, we can divert significant volumes of waste away from landfill and create local employment opportunities.

At the Overwood ERF, we will treat 330,000 tonnes of non-recyclable waste each year and generate enough energy to power 82,000 homes. That’s equivalent to powering over half the homes in South Lanarkshire. (145,000 households in South Lanarkshire SLC –

We’ll also provide a boost to the local economy, generating employment and supply chain opportunities, as well as training schemes for apprentices.

Q: What kind of waste will you accept?

The Overwood ERF will accept non-hazardous, non-recyclable household, commercial and industrial waste. The types of waste that can be accepted by the ERF will be regulated and controlled by the PPC Permit.

Environmental and Technical

Q: Will the facility be noisy?

No, there are noise limits for energy recovery facilities and our main operations take place within an enclosed building. There will be some noise associated with deliveries and on-site movements, but this won’t have a significant impact on people and communities living near the facility. We are carrying out detailed noise assessments as part of our planning process, which includes assessing any impacts on our nearest neighbours.

The Overwood ERF has been designed to operate with minimal noise impacts. As part of the planning application, noise monitoring has been undertaken to understand the existing noise conditions, with a detailed noise assessment forming part of the final planning application.

Q: Will the facility smell?

Strict measures and state of the art design will be included in the Overwood ERF to ensure the potential for odours are minimised. This will include all waste being unloaded within the building, which will operate under negative pressure.

Once operational, amenity issues would be controlled through the site’s Pollution Prevention Control (PPC) Permit, which will be issued and regulated by SEPA.

Q: How safe is the technology being proposed?

The technology is modern, safe and proven. Viridor currently operates ten energy recovery facilities in the UK, including one at Dunbar, East Lothian. Across Europe, there are more than 400 ERFs in operation using this technology.

Q: What are the operational hours of the facility?

The Overwood ERF will operate twenty-four hours a day, seven days a week, with occasional offline periods for maintenance.

However, the proposed delivery hours are 6am – 10pm Monday to Saturday and 10am – 4pm on Sundays.

Q: Who will use the electricity?

The electricity will be exported into the national electricity network for onward distribution to the homes and businesses that need it. We’re also looking at how excess heat and power generated by the facility could be used locally.

Air Quality

Q: How will you protect local air quality?

Overwood ERF, like all modern ERF facilities, will be regulated to ensure it meets the requirements of the European Industrial Emissions Directive, which is strictly monitored and enforced by the Scottish Environment Protection Agency (SEPA). The design and operation of all new Energy Recovery Facilities must comply with the Emission Limit Values (ELVs) set out in the Waste Incineration Directive (WID) recently incorporated into the Industrial Emissions Directive. The WID aims to reduce the impact of waste incineration on human health and the environment.

We would use a continuous, automatic monitoring system, which operates 24 hours a day, all year round. The monitoring results would be regularly sent to the regulator – SEPA– which reviews them against the relevant UK and international standards.

Q: How are the emissions controlled and monitored?

The way we monitor air quality is agreed with the Scottish Environment Protection Agency as part of our Pollution Prevention Control Permit.

Emissions management is built into the design of the ERF. Flue gases are treated to ensure ERFs are a low source of environmental pollutants and contribute only a small fraction of both local and national total emissions of particles.

Non-recyclable waste is burnt under controlled conditions and heat from the combustion process generates high pressure steam and energy. The combustion gases are cleaned before they are released into the atmosphere. There are typically four components to the flue gas cleaning and abatement technique:

  • Selective Non-Catalytic Reduction (SNCR), by injecting urea into the combustion chamber, abates nitrogen oxides;
  • Hydrated lime reagent, is injected to neutralise acid gas compounds;
  • Activated carbon, is injected to absorb mercury, dioxins and furans;
  • Bag filtration to remove fine particulates.

Emissions will be monitored continuously using certified and calibrated continuous monitoring systems. The continuous monitoring systems will be fed back to the ERF control room, so any potential issues are identified immediately and, if required, corrective actions can be taken. Some pollutants, such as metals, cannot be monitored continuously as they are released at very low concentrations will be monitored periodically by an independent certified emissions monitoring contractor.

Traffic and Transport

Q: Will you put in place a traffic management plan for deliveries – and will this be controlled?

A traffic management plan will be agreed with South Lanarkshire Council and will ensure that lorries arriving at the plant adhere to agreed routes to ensure they do not travel through any areas which may be sensitive to noise or emissions.

The traffic management plan will also manage the flow of HGVs to the site as deliveries will be pre-booked in with Viridor before arriving at site.


Q: When will construction begin?

If the plans go ahead and planning consent is granted by South Lanarkshire Council, construction is likely to begin in late 2022.

Q: How many jobs will there be during construction?

It is anticipated that circa 500 jobs would be created during construction.


Q: How many jobs will there be during operation?

During operation there will be up-to 55 full-time, career jobs available at the ERF including apprenticeships.

Q: How many jobs will there be during construction?

It is anticipated that circa 500 jobs would be created during construction.

Q: What jobs will be created when operational?

When operational, the Overwood ERF will create up-to 55 permanent jobs, including plant operations and management, maintenance mechanics, electrical and instrumentation technicians, environmental, health and safety, accounting / finance and IT specialists.

Any further questions?

Additional FAQs will be provided on this page throughout the consultation process.

If you have any further queries or have any questions or comments, you can contact the team using the following methods:

Freephone: 0800 098 8157  (between 9am and 5:30pm)

Those that had further questions during our community consultation programme were able to join one of our four live chat sessions where they could speak directly to members of the project team. These live chat sessions were held on the virtual exhibition on the following dates:

  • Thursday 18th February 2021 – 2pm to 6pm
  • Thursday 25th February 2021 – 4pm to 8pm
  • Thursday 8th April 2021 – 2pm to 6pm
  • Thursday 15th April 2021 – 4pm to 8pm