The European Union’s Medium Combustion Plant Directive – Monitoring and Compliance Requirements
David Graham and Steve Griffi ths, Uniper Technologies Summary
that these do not qualify as a Large Combustion Plant under the Industrial Emissions Directive). Emission Limit Values are defi ned for NOx
and new aggregated plants above 1 MWth , SO2 ). In addition, the UK has extended the
The European Union’s Medium Combustion Plant Directive (MCPD) entered into force in December 2015 and this must be transposed into national legislation within each of the Member States by 20 December 2017. The MCPD applies to existing individual Medium Combustion Plants (MCPs) in the net thermal input range 1 to <50 MWth
(provided
scope of the MCPD to cover small electricity generating plants, designated as ‘specifi ed generators’.
and dust for conventional combustion plants and gas turbines and engines, excluding start-up and shut-down periods. These limits will be applied to new MCPs from 20 December 2018 and to existing MCPs from 1 January 2025 (> 5 MWth January 2030 (≤ 5 MWth
) or from 1
Periodic monitoring is required annually for MCPs > 20 MWth and three-yearly for smaller MCPs and all pollutants with specifi ed
Emission Limit Values and CO must be monitored. Optional exemptions are provided for MCPs that operate for no more than 500 hours per annum, district heating plants and isolated plants in remote locations and for those subject to interruption of their regular fuel supply. However, more stringent requirements can be imposed on MCPs within Air Quality exceedance zones.
There are signifi cant implementation challenges associated with the assessment and demonstration of compliance and also the suitability and scheduling of manual periodic measurements following plant registration or permitting.
12 2 Scope of the Medium
input is assumed to be based on the net calorifi c value of the fuel (the lower heating value) in line with other European legislation.
Combustion Plant Directive The MCPD nominally applies to Medium Combustion Plants (MCPs) in the thermal input size range ≥ 1 to < 50 MWth
. The thermal
Most stationary combustion plants are in scope of the MCPD, including boilers, engines and turbines, except for Large Combustion Plants (regulated under Chapter III of the Industrial Emissions Directive(IED) and waste incineration plants (regulated under Chapter IV of the IED). Mobile generating units covered by the Non-Road Mobile Machinery Directive are also exempt from scope.
Emission Limit Values (ELVs) are defi ned for nitrogen oxides (NOx
fi red MCPs (with the exception of gas oil). Only NOx specifi ed for natural gas and gas oil fi red MCPs.
), sulphur dioxide (SO2
) and dust for solid and liquid fuel ELVs are
A new plant is defi ned as an MCP that is put into operation on or after 20 December 2018 whilst an existing plant is an MCP operating before that date. ELV compliance is required from 20 December 2018 for a new plant and from 1 January 2025 for an existing plant (> 5 to < 50 MWth
) or from 1 January 2030 (≥ 1 to ≤ 5 MWth ).
Combustion Plant (LCP) status, a new MCP, which includes units smaller than 15 MWth
Existing MCPs are regulated as individual units whilst new MCPs are regulated as aggregated units at stack level. As the IED excludes units smaller than 15 MWth
when deciding on Large , may therefore aggregate to more than 50 MWth without being classed as an LCP.
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