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Do you know what the Medium Combustion Plant Directive is?

 

Author: Environmental Monitoring Solutions Ltd

In this blog post we discuss the Medium Combustion Plant Directive and identify the related key dates.

Before detailing the requirements of the Medium Combustion Plant Directive, it is important to define combustion plant. A combustion plant is any technical apparatus in which fuels are oxidised in order to use the heat generated it will cover boilers, turbines and engines (European Commission 2019).

The Medium Combustion Plant Directive (MCPD, Directive 2015/2193/EU) was transposed into UK legislation via the following amendments:

England and Wales: Environmental Permitting (England and Wales) (Amendment) Regulations 2018;
Northern Ireland: Pollution Prevention and Control (Industrial Emissions) (Amendment) Regulations (Northern Ireland) 2018; and
Scotland: Pollution Prevention and Control (Scotland) Amendment Regulations 2017.
The MCPD regulates pollutant emissions that are a result of the combustion of fuels in Medium Combustion Plants. Medium Combustion Plants, or MCPs, are plant with a rated thermal input greater than or equal to 1MWth and less than 50MWth. Specified Generators are a subcategory of MCPs that generate electricity for more than 50 hours per annum (including any testing required) or export electricity to the grid.

Requirements of the MCPD (England and Wales)

Pollutant emissions regulated under the MCPD are oxides of nitrogen (NOx), sulphur dioxide (SO2), and dust in order to reduce harm to environment, human health and assist in meeting legally-binding emission reduction targets. Either a standard rules or bespoke permit will be required for new and existing MCPs as well as Tranche A and B Specified Generators. New MCPs, existing MCPs, Tranche A and Tranche B are defined as:

MCPs:New: any plant commencing operation for the first time after 20 December 2018
Existing: any plant which commenced operation before 20 December 2018
Specified Generators:Tranche A: generators that were in operation before 1st December 2016 or benefit from capacity agreements from the 2014 and 2015 capacity market auctions or generators <1MWth with capacity agreements from the 2016 capacity market auction
Tranche B: specified generators that do not fall within the Tranche A category as described above
There are also rules for MCP aggregation, or the combining of thermal input ratings:

New MCPs: where there is more than one MCP, the thermal input rating must be aggregated. For example, two boilers with a thermal input rating of 0.75MWth would fall within the scope of the Environmental Permitting (England and Wales) Regulations as their aggregated thermal input would be 1.5MWth
Existing MCPs: thermal input ratings are not aggregated. For example, two existing boilers with thermal input rating of 0.75MWth would fall outside the scope of the Environmental Permitting (England and Wales) Regulations as the thermal input ratings would not be aggregated.
Dates by which operators of MCPs and Specified Generators must obtain an environmental permit are dependent on multiple factors. Figures 1 and 2 below provide key dates.

Key Dates for MCPs

20.12.2018 - New MCP's must be permitted, emissions tested within four months and comply with Emission Limit Values (ELVs)

01.01.2024 - Existing MCP's with a capacity between 5MWth and 50MWth must be permitted and emissions tested within four months of recieving the permit.

01.01.2025 - Existing MCP's with a capacity between 5MWth and 50MWth must comply with ELVs.

01.01.2029 - Existing MCP's with a capacity between 1MWth and 5MWth must be premitted and emissions tested within four months of recieving the permit.

01.01.2030 Existing MCP's with a capacity between 1MWth and 5MWth must comply with the ELVs.

 

Key Dates for Specified Generators

01.01.2019 - All Tranche B MCP generators must be permitted and emissions tested within four months and comply with the standard permit conditions and the Nox ELV of 190mg/mm3 within 10 minutes of operation.

01.10.2019 - Tranche A 5 - 50MW MCP generators with NOx emissions above 500mg/mm3 which oeprate for more than 50hper annum must be permitted. The EA will require that NOx emissions do not give rise to an exceedance of the Air Quality Standards Regulations.

01.01.2025 - Tranche A 5 6o 50MW with NOx emissions above 500mg/mm3 need to comply with the NOx ELV of 190mg/Mm3 within 20 minutes of operation. Remaining Tranche A 5 to 50MW MCP generators must be permitted and comply with the MCPD ELVs.

01.01.2030 - Tranche A 1 to 5 MW MCP generators must be permitted and comply with the MCPD ELVs

There are some exemptions based on requirements for environmental permits and ELVs. A detailed list of these exemptions can be found on the Environment Agency’s Guidance on MCPs and Specified Generators. The NI and Scottish regulations are slightly different to the above, buthttps://www.gov.uk/guidance/medium-combustion-plant-and-specified-generators-environmental-permits guidance can be found here:

Northern Ireland Department of Agriculture, Environment and Rural Affairs Guidance
Scottish Environment Protection Agency Guidance


Are you responsible for a combustion plant? Did you already know about the MCPD?