Medium Combustion Plant Registration

What is a Medium Combustion Plant (MCP), and what is the purpose of the Medium Combustion Plant Regulations?

A combustion plant is a device in which fuels are burned to make use of the heat generated. This includes boilers, turbines, and engines. The term medium is a reference to the size of the combustion plant.

The burning of fuels in these devices gives rise to emissions of various pollutants into the air, which can include particulates (dust), nitrogen and sulphur oxides, and carbon monoxide. The purpose of the Medium Combustion Plant Regulations is to limit these emissions in order to help improve air quality to the benefit of the environment and human health.

How do the Medium Combustion Plant Regulations work?

The regulations require the registration of a medium combustion plant except where it is already included on a site holding an Industrial Emissions Licence (IEL) or an Integrated Pollution Control (IPC) licence. More details on the legislation are given below.

MCP regulations

The European Union (Medium Combustion Plant) Regulations 2017 were signed into law in December 2017. Their purpose is to limit emissions to the atmosphere from boilers and other stationary combustion plants in the 1-50 MWTH (thermal input) range. It covers all fuel types. The Regulations transpose the Medium Combustion Plant (MCP) Directive (EU 2015/2193) which was adopted in 2015.

The regulations limit the level of emissions allowable from a Medium Combustion Plants (MCP). New MCP's are required to comply with specified Emission Limit Values (ELVs) or limits on annual hours of operation, from 20th December 2018, while operators of existing MCPs will not be required to comply with these limits until 2025 at the earliest. This will assist in limiting the impact on human health, vegetation and biodiversity which can be caused by air pollution. The regulations also specify additional requirements such as monitoring and reporting of emissions to the EPA.

MCP Registration system

Under the MCP Regulations, the EPA is required to establish and maintain a register of all MCP's that come within the scope of the Regulations, unless the MCP is located on an installation regulated by an IED or IPC licence from the EPA. MCP's which are not located on an IED or IPC licensed installation will need to be registered in accordance with the dates specified in the Regulations. The requirements of the regulations are administered by the EPA through the registration system, or through the relevant IED/IPC licences.

For operators of MCP's which are within the scope of the Regulations, the following information is important and should be read carefully. It is also advised to read the Regulations in full, to fully understand what they require of MCP operators, and of the EPA.

For existing MCP's on an existing EPA Licenced installation

For existing MCP's, no specific action is required of you. Where you propose to operate a new MCP, this will need to be authorised by the EPA prior to operation, either by means of a Condition 1 approval, Technical Amendment or licence review.

Key dates

Under the European Union (Medium Combustion Plant) Regulations 2017, the operator of a medium combustion plant shall apply to the MCP register through the Agency in accordance with the following time frames:

  • At least two months prior to being put into operation, in the case of new medium combustion plants;
  • Prior to 1 November 2023, in the case of existing medium combustion plants with a rated thermal input greater than 5MW;
  • Prior to 1 November 2028, in the case of existing medium combustion plants with a rated thermal input of less than or equal to 5MW.

If you are proposing to operate an MCP for the first time on or after 20th December 2018, it is especially important that you understand the different requirements that apply to ‘new’ versus ‘existing’ MCP in the Regulations, please read our FAQs.

Registration system

Under the MCP Regulations, the EPA is required to establish and maintain a register of all MCP's that come within the scope of the Regulations unless the MCP is located on an installation controlled by an IED or IPC licence from the EPA. MCP's which are not located on an IED or IPC licensed installation will need to be registered, in accordance with the dates specified in the Regulations.

The registration process

In order to register an MCP, operators must complete the registration process through the online EDEN portal.

NOTE: If you are a first-time user of the EDEN portal, you will need to create a user login account using the Sign Up option, and follow the instructions provided. On signing up, you should request access to the MCP module. After this, you can log in via the EDEN portal to register a new MCP. There are extensive user instructions in the Help section of the EDEN portal but if you require further assistance in relation to technical issues or queries on EDEN registration, please email us at eden@epa.ie.

On receipt of all the required information, the Agency will register the MCP and issue a Certificate of Registration to the operator. The Agency will also add the MCP to the MCP Register. The MCP Register contains key information relating to the MCP including any relevant Emission Limit Values (ELVs), and it is advisable that the operator consults the MCP regulations to ensure they are fully informed of the requirements placed on the operator of a registered MCP. The operator should also check the applicable footnotes in the Regulations which may provide further information, such as the various exemptions, derogations and variations from the prescribed ELVs. For guidance on a standardised approach to monitoring the emissions to atmosphere the operator should refer to the Agency Guidance Note on monitoring of Stack Gas Emissions from Medium Combustion Plants: Air Guidance No. 11 (AG11).

For further enquiries about the registration process, operators should email the EPA directly at mcpregistration@epa.ie.

NOTE: All applicants should ensure that their registration application has been completed correctly. Applications cannot be edited post-submission. If there is an error with the application, the applicant will be notified and will be required to withdraw their application and submit a new application

MCP Register

You can view the MCP Register online. This register contains the key information relating to MCPs.

Contact us

For further queries please see our FAQs or contact us at:

Email: mcpregistration@epa.ie

Tel: 053 9160600

The Medium Combustion Plant Regulations were signed into law in December 2017. Their purpose is to limit emissions to atmosphere from boilers and other stationary combustion plants in the 1-50 MWth (thermal input) range. It covers all fuel types. The Regulations transpose the Medium Combustion Plant (MCP) Directive ((EU) 2015/2193) which was adopted in 2015.

The regulations limit the level of emissions allowable from new combustion plants from 20th December 2018, while operators of existing MCPs will have longer to comply with stricter emission standards. This will assist in limiting the impact on human health, vegetation and biodiversity which can be caused by air pollution.

Popular FAQs

  • What are the Medium Combustion Plant (MCP) Regulations and what is their purpose?

    The Medium Combustion Plant Regulations were signed into law in December 2017. Their purpose is to limit emissions to atmosphere from boilers and other stationary combustion plants in the 1-50 MWth (thermal input) range. It covers all fuel types. The Regulations transpose the Medium Combustion Plant (MCP) Directive ((EU) 2015/2193) which was adopted in 2015.

    The regulations limit the level of emissions allowable from new combustion plants from 20th December 2018, while operators of existing MCPs will have longer to comply with stricter emission standards. This will assist in limiting the impact on human health, vegetation and biodiversity which can be caused by air pollution. 

  • What is a ‘Medium Combustion Plant’?

    A “combustion plant” is defined as “…any technical apparatus in which fuels are oxidised in order to use the heat thus generated” covering boilers, turbines, and engines.  The regulations apply to both new and existing equipment, between 1 and 50MWth.  Regulation 4(3) sets out exemptions for some specific combustion plants.

    They are referred to as ‘medium’ because large combustion plants ‘LCP’ (i.e. those >50 MWth) are covered by the Industrial Emissions Directive (2010/75/EC), while small combustion plants (up to 500 kWth) are covered by the Ecodesign Directive (2009/125/EC)

  • What differentiates a ‘new’ from an ‘existing’ Medium Combustion Plant and why is this important?

    An “existing medium combustion plant” means a medium combustion plant put into operation before 20 December 2018. A "new medium combustion plant” is any MCP that is not existing, i.e., an MCP first put into operation on or after 20 December 2018.

    A new MCP must meet the relevant requirements of the Regulations from the date it is put into operation. For example, an MCP first put into operation on 20 December 2018 must be registered by this date (unless it is on an installation controlled by an IED or IPC licence), and is required to meet the relevant emission limit values from this date.

    An existing MCP is not required to be registered until 2024 (5 – 50 MWth) or 2029 (1 – 5 MWth), and the relevant emission limit values will not apply until 2025 and 2030 respectively.

  • What do the Regulations require of MCP operators?

    The main requirements are as follows:

    • Each MCP must be registered with the EPA by the specified date, unless it is on an installation regulated by an IED/IPC licence from the EPA.
    • Operators must provide information to the competent authority (EPA) for the purposes of registration.
    • The MCP must comply with emission limit values (ELVs) for SO2, NOx and dust, by the dates referred to above.
    • Emissions (SO2, NOx, dust and carbon monoxide (CO)) must be monitored at least every 3 years for plants up to 20 MWth, or at least annually for plants greater than 20 MWth.
    • For MCPs not subject to ELVs, as they are operating for less than 500 hours per annum, there is still a requirement [Schedule 3, Part 1] to measure carbon monoxide.

    In addition the regulations require registered operators to keep various records relating to the operation of the plant and emissions monitoring, and specify other obligations such as notifying the Agency of non-compliances. See Regulation 14 for full details.

  • I operate an MCP on an IED licensed installation. What do I need to do?

    For existing MCP, no specific action is required of you. Where you propose to operate a new MCP, this will need to be authorised by the EPA prior to operation, either by means of a Condition 1 approval, Technical Amendment or licence review.