The Energy Savings Opportunity Scheme (ESOS) continues to evolve, and the latest updates are critical for UK businesses with 250 or more employees. With new deadlines and reporting requirements, it’s essential to stay ahead to remain compliant and make the most of your energy management opportunities.
New GOV.UK One Login for ESOS Reporting
The UK government has introduced a unified GOV.UK One Login to access the MESOS portal (Manage your Energy Savings Opportunity Scheme Reporting System).
This new login system provides a secure, centralised way to access multiple government services, including ESOS reporting. If your organisation hasn’t connected your MESOS account yet, now is the time to make the switch.
Key ESOS Deadline: Progress Update (PU1) – 5 December 2025
One of the most important changes for ESOS Phase 3/4 participants is the requirement to submit a Progress Update (PU1) by 5 December 2025.
Even if your previous action plan didn’t include specific energy efficiency measures, all participants must provide a PU1. This update should include:
- Actions already implemented
- Measures currently in progress
- Any additional initiatives not previously planned
In short, identifying potential energy savings is no longer enough. Businesses now need to demonstrate actual progress.
Why This Matters for Your Business
ESOS reporting isn’t just a regulatory requirement; it’s a strategic opportunity.
Forward-thinking businesses are leveraging ESOS reports as actionable energy roadmaps, integrating:
- Energy management systems
- Performance tracking
This approach can reduce operational costs, improve energy efficiency, and strengthen sustainability credentials.
How TEST Consulting Can Help
At TEST Consulting, we support organisations in turning ESOS compliance into measurable progress. Our expertise covers:
- Preparing and submitting PU1 reports
- Developing upcoming action plans
- Designing ESOS reporting and implementation strategies
- Providing ongoing monitoring and performance tracking
By partnering with us, your business can go beyond compliance, achieving long-term energy savings and sustainability goals.
Next Steps
The 5 December 2025 PU1 deadline is approaching fast. Don’t risk penalties or missed opportunities – take proactive steps to ensure your ESOS submission is complete, accurate, and aligned with your business objectives.
Contact TEST Consulting today to explore how we can help your organisation:
- Meet ESOS PU1 requirements
- Optimise energy performance
- Reduce carbon footprint and operational costs
Tel: 0113 467 7650
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