Statutory guidance

SR2018 number 7: new and existing, low risk, stationary medium combustion plant

Standard rules permit and generic risk assessment for new and existing, low risk, stationary medium combustion plant.

• From: Environment Agency
• Published: 27 March 2023
• Last updated: 26 February 2026
  Show all updates

  1. 26 February 2026

     Hydrogen added as a new fuel type on this rule set with corresponding criteria and ELVs including using a blend with natural gas. Gas oil substitutes added as a fuel type on this rule set with corresponding criteria. Caps and Cowls and non-vertical stacks are now permitted. Clarity around use in an AQMA where there is a relevant air quality plan. Added MCERTS monitoring as an option. Updates to the interpretation section to improve understanding

  2. 12 February 2026

     Updated the 'Details' section to linked to the new service for applying for a environmental permit online in England.

  3. 27 March 2023

     First published.

Applies to England

Documents

SR2018 number 7: new and existing, low risk, stationary medium combustion plant

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SR2018 number 7: generic risk assessment

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Details

When referred to in an environmental permit these rules will allow the operator to operate one or more new or existing medium combustion plant (MCP), which may be in an Air Quality Management Area, unless the combustion plant is referenced in a relevant Air Quality Plan.

Applies to combustion plant burning the following fuels:

• gas oil and gas oil substitutes
• natural gas
• hydrogen
• biogas
• other gaseous fuels

Read the standard rules permit to check the limits of the specified activity.

Apply online

You can apply online for this permit in England.