Environmental Performance Assessment Scheme (EPAS) - a fair way to report performance​ 

Closes 30 Jun 2025

Section 5: What is the environmental performance rating?

A house infographic. The three parts of EPAS, compliance, time and harm are displayed as pillars. EPAS is the roof of the house.

Figure 1: The three key parts of EPAS: compliance category, time taken to resolve non-compliance and environmental harm caused.

We expect all operators to undertake regulated activities in compliance with their financial and legal environmental requirements for that regime including any specific conditions attached to the authorisations they may hold. This includes paying our annual charges on time. This is the minimum that we expect. Our experience is that most operators take these responsibilities seriously. 

However, where operators fall below these expectations, we need a robust and clear assessment scheme that allows us to categorise where and why non-compliance has occurred. This includes the actions of the operator to avoid causing environmental harm and resolve any non-compliance quickly. 

To reflect this, there will be three parts to the environmental performance rating: 

  • Compliance: how serious any non-compliance was. 

  • Time: how long it took to correct any non-compliance. 

  • Environmental harm: the level of any environmental harm caused. 

The environmental performance rating is designed to incentivise good levels of environmental performance and help prevent non-compliance. 

An environmental performance rating will have no relationship to any decision we take on whether to take enforcement action where legal requirements have not been met. 

The three parts to the environmental performance rating are detailed in Table 1. We think this is a fair way to rate operators. 

Table 1: Information used to calculate the environmental performance rating. 

Parts of environmental performance  

What do we mean? 

Level of compliance 

Was the operator compliant, non-compliant or major non-compliant with their legal environmental responsibilities or conditions attached to the relevant authorisation? 

Time taken to resolve non-compliance  

Was the non-compliance corrected quickly, or did it take months or years to resolve?  

Environmental harm  

Was environmental harm caused equivalent to a Category 1 or 2 environment event?  

To ensure the scheme is simple, understandable and good value to implement, there are three performance ratings, see table 2. 

Table 2: The environmental performance rating and what this means. 

Environmental performance rating  

What does this mean? 

Good 

An operator will either be fully compliant or have some non-compliance that was resolved quickly. 

Below expectations 

An operator may have had an instance of major non-compliance which was resolved quickly or some non-compliance that took a bit longer to resolve. Any environmental harm caused would be a Category 3 or 4 environmental event. 

Unacceptable 

An operator may have had repeat major non-compliance, failed to deal with any non-compliance identified or caused a Category 1 or 2 environmental event. 

Our expectation is all operators attain 'Good' environmental performance rating

When it is not possible to resolve non-compliance immediately, we expect operators to prepare an appropriate compliance recovery plan. When a compliance recovery plan is in place that we have confirmed includes reasonable steps to resolve non-compliance in a timely manner, this will be published alongside the environmental performance rating. This is to ensure we fairly represent the actions operators are taking to achieve compliance.

Our priority is to tackle operators rated as 'Unacceptable' with no plan to resolve non-compliance

How level of compliance, time in non-compliance and environmental harm interact to determine the environmental performance rating can be viewed in figure 2. More detail of the environmental performance rules is available in section 9. 

Three tables to show the environmental performance rating as it relates to level of compliance, time to resolve non-compliance and environmental harm caused.  Compliance is displayed in pink, environmental harm in blue and time in green, with the environmental performance rating in grey. These rules can also be viewed in table 4, section 9.

Figure 2: Environmental performance rating as it relates to level of compliance, time to resolve non-compliance and environmental harm caused.

We want to ensure that these ratings are easily understood and what the ratings are called both reflects the risk operators pose to the environment and acts as an incentive for operators to proactively avoid any non-compliance with legal environmental requirements. 

Question 1: How far do you agree or disagree with the three proposed environmental performance ratings of good, below expectations and unacceptable?