Your ESOS Phase 3 preparation checklist

ESOS Phase 3 is the most significant update to the scheme since its introduction, with tighter evidence requirements and a closer focus on action planning. Many organisations are still unclear on whether they qualify, what their lead assessor needs from them, and what common mistakes to avoid. This checklist gives you a clear, structured path from qualification through to submission so nothing gets missed.

What's inside

• ✓Qualification threshold check and group structure guidance
• ✓Evidence gathering checklist by energy source: gas, electricity, transport and process
• ✓Lead assessor selection criteria and the right questions to ask
• ✓Key submission dates and the recommended compliance pathway
• ✓Common reasons assessments get rejected and how to avoid them