FREE WEBINAR: How to Streamline ESOS Phase 4 and Unlock Real Energy Savings
In this webinar, we break down the key updates for ESOS (Energy Savings Opportunity Scheme) Phase 4, what will (and won’t) be required in 2026, and the smart steps organisations can take now to stay compliant while driving real energy and cost savings.
Whether you’re responsible for compliance, sustainability, finance, estates, or operations, this session will give you clarity, confidence, and a clear roadmap to ESOS success.
You’ll learn:
- Valuable lessons from Phase 3 and Action Plans
- The key ESOS Phase 4 deadlines and what they mean for your organisation
- What’s changing in 2026, and what’s staying the same
- How to prepare early and avoid common compliance pitfalls
- How to turn ESOS from an administrative task into strategic advantage
- Practical actions you can begin immediately to streamline Phase 4 preparation
Perfect for: energy managers, sustainability leads, procurement, finance teams, compliance officers, FMs and C-suite leaders managing Net Zero or ESG commitments.
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Your questions from the session answered
In both Phase 3 and 4 there is no legal requirement for you to act on the findings of your ESOS assessment. However, there is a reputational driver through the publishing of Action Plans. Given that participants should really treat ESOS as an opportunity for improvement and not just a compliance requirement. If good quality ESOS energy audits are undertaken there will, in most cases, be significant benefits identified that should be implemented even if not required by legislation.
If you have any control over how energy is used and have visibility of energy use then good behaviour change and control optimisation would be the two main areas of focus. However, if you have no visibility or control I would suggest a conversation with your landlord or ultimately consider renegotiating the lease.
Unfortunately you can only use energy projects that are completed/commissioned after 5th Dec 2027 in your ESOS Phase 4 action plan. So, to include these in your phase 4 plan you will need to hold off commissioning/signing off until after the 5th Dec 2027.
It’s difficult for us to say as we have never had a customer whose compliance has failed and EA audit due to our rigorous process and attention to detail. However, I would suggest 1) An unrepresentative audit sample 2) Unverifiable energy data used 3) Not covering the full scope of the organisation/property portfolio
Ideally you would want to know what the actual delivered savings are otherwise it would be difficult to justify the investment or indeed future investments in ECMs. Actual data is always preferred but if you can only provide estimates and can explain your rationale then that would be accepted at least for now.
Updated guidance will be issued in early 2027.
No, you will need a new audit for each Phase.
You need to submit compliance to the EA by the 5th Dec 2027. We would however suggest that ESOS compliant site audits are completed sometime before this, ideally ASAP.
Last/2nd update to the Phase 3 Action Plan is the 5th Dec 2026. Then as part of the 5th Dec 2027 ESOS phase 4 submission you will need to finalise reporting of the Phase 3 Action Plan achievements. The first submission of the Phase 4 Action Plan will be due by the 5th Dec 2028 and can only include projects commissioned/completed after the 5th Dec 2027.
On the EA’s website.