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What is PAS 51215-2:2025 - Energy and decarbonization assessment competencies of lead assessors and assessment teams specification about?
For organizations to have confidence in the outputs of an energy and decarbonization assessment, it must be conducted by suitably competent people. PAS 51215-2:2025 defines clear competencies for lead assessors and assessment team members.
Who is PAS 51215-2:2025 - Energy and decarbonization assessment competencies of lead assessors and assessment teams specification for?
Users will include:
• lead energy assessors working alone or leading an assessment team, and assessment team member;
• organizations of any size that are being assessed;
• organizations that commission assessments;
• regulators (national, regional and local);
• training providers;
• professional associations, NGOs and academia.
What does PAS 51215-2:2025 - Energy and decarbonization assessment competencies of lead assessors and assessment teams specification cover?
PAS 51215-2:2025 specifies the competencies necessary for a person to be deemed capable of planning an energy and decarbonization assessment, leading an assessment team, and reviewing and approving the output of an energy and decarbonization assessment.
It covers competencies necessary for the assessments of an organization's energy use and generated greenhouse gas (GHG) emissions. These competencies are relevant to assessments of the energy use and GHG emissions that the organization is responsible for and which are covered by:
a) the organization's energy consumption and energy related Scope 1 emissions and Scope 2 emissions from the organization’s assets and activities, including buildings, transport and industrial processes;
b) the energy consumption and Scope 3 emissions from business travel
c) any additional Scope 1 emissions, Scope 2 emissions, and Scope 3 emissions that the organization that is being assessed wishes to include.
PAS 51215-2:2025 applies to a lead energy assessor who might be working alone or leading an assessment team to complete an assessment. It also includes requirements for competencies relevant to members of an assessment team carrying out the assessments.
Annex A provides further detail on the requirements for lead assessor core competencies. Annex B sets out recommendations for determining the necessary knowledge and skills of an assessment team.
NOTE: PAS 51215-2:2025 does not cover competencies for installing or introducing measures to reduce energy use or GHG emissions, or the competencies for monitoring and verifying the effect of such measures.
Why should you use PAS 51215-2:2025 - Energy and decarbonization assessment competencies of lead assessors and assessment teams specification?
• Accuracy and reliability. PAS 51215-2:2025 can help ensure that assessors have the knowledge, skills, abilities and behaviours to conduct thorough and accurate assessments that generate reliable outputs.
• Credibility and confidence. Assessments conducted by competent assessors are more likely to be seen as credible and trustworthy by stakeholders, including policymakers, businesses, investors and the public – leading to a greater acceptance of outputs.
• Compliance. Competent assessors are more likely to ensure that any applicable legal and regulatory criteria are consistently met.
• Effectiveness. Competent assessors are more likely to identify all the pertinent improvement opportunities and to produce robust and effective net zero implementation plans.
• Efficiency. By ensuring competent assessors, PAS 51215-2:2025 helps ensure assessments don’t waste time and money.
• Risk mitigation. By ensuring competent assessors, PAS 51215-2:2025 reduces the risk that outputs will be flawed, ignored or dismissed as ‘greenwashing’.
• Sustainability. PAS 51215-2:2025 helps develop an understanding of what it takes to be a competent energy and net zero assessor, developing critical expertise in how to embed sustainability.
What has changed?
When the Energy Saving Opportunity Scheme (ESOS) was first developed, the Department of Energy and Climate Change (DECC) sponsored the development of PAS 51215:2014 to establish competencies for lead assessors conducting an ESOS assessment.
The Department of Energy Security and Net Zero (DESNZ) has subsequently sponsored BSI’s revision of PAS 51215:2014 into two new documents: PAS 51215-1 and PAS 51215-2. The former establishes a process for conducting energy and decarbonization assessments; the latter updates PAS 51215:2014 by strengthening the existing energy competencies and incorporating competencies related to GHG emissions, decarbonization and net zero.
