ESOS Phase 4 is a deadline. Make it a savings programme.
The compliance deadline is 5 December 2027, with qualification assessed on 31 December 2026. The hard part isn't the notification — it's the Action Plan progress you now have to report on each year. kWIQly turns your existing half-hourly and fiscal meter data into a ranked, auditable list of Energy Conservation Measures — same-day.
What changed in Phase 4
- ✓**Action Plan progress reporting** — Phase 4 assessments must now include progress against prior Action Plan commitments and explain any unmet ones.
- ✓**Compliance routes tightened** — Display Energy Certificates and Green Deal Assessments are being withdrawn as standalone compliance routes (subject to parliamentary scrutiny).
- ✓**Net-zero alignment postponed to Phase 5** — mandatory net-zero requirements now land in 2027–2031, giving you runway to embed the right data foundation first.
- ✓**Penalties that matter** — non-compliance fines range from £5,000 to £50,000, plus £500/day continuing penalties up to £40,000.
How kWIQly delivers your Phase 4 evidence
Identify
- Connect to your existing fiscal / HH meter data
- kWIQly cleans, sorts and diagnoses in hours
- Per-site waste patterns surfaced automatically
- No new meters, no sub-metering project
Evidence
- System-generated Energy Conservation Measures
- Each ECM ranked by kWh, £/€ and tCO₂e impact
- Confidence scores and supporting data lineage
- Export pack formatted for your lead assessor
Track
- Annual Action Plan progress reports, generated
- Near-real-time verification from meter data
- Flag ECMs at risk of slipping before year-end
- Feeds SECR and CSRD E1 reporting in parallel
Why ESOS teams choose kWIQly
Your Phase 4 timeline with kWIQly
Week 0 — Connect
Share fiscal / HH meter data from your existing supplier or data aggregator. No site visits. No installations.
Day 1 — Diagnose
kWIQly returns a ranked list of ECMs across your portfolio with quantified kWh, cost and carbon impact.
Week 2 — Review
One-hour working session to cross-reference findings with your internal knowledge and existing EMS.
Month 1 — Evidence
Hand your lead assessor a structured ECM and evidence pack mapped to ESOS Phase 4 Action Plan format.
Year 1+ — Track
Annual Action Plan progress reports generated from live meter data — not spreadsheets.
Also obligated under EU EED Article 8 or CSRD E1?
kWIQly serves UK ESOS, EU EED Article 8 audits, SECR reporting and CSRD ESRS E1 energy disclosures from a single connection to your meter data. One data pipeline, multiple regimes, zero duplicated effort.
- ✓UK: ESOS Phase 4, SECR
- ✓EU: EED recast (Art. 8 & Art. 11), CSRD ESRS E1
- ✓Real-estate: MEES (UK) and EPBD MEPS (EU)
Lead assessor or energy consultant?
Run your client's portfolio through kWIQly Workbench before you meet them.
ESOS is consultant-mediated. You're the person who'll interpret the data, defend the Action Plan and own the relationship. Workbench is the same analytics engine as our Managed product, priced per client project — from €49 per analysis. Join the waiting list, upload a meter extract, ship a ranked ECM list to your client before the kick-off call.
Start before the queue forms.
Lead-assessor capacity tightens every quarter closer to the deadline.
Book a 30-minute call with our client partner team. Bring a list of your sites and a sample of your meter data — we'll run a same-day assessment before you commit to anything.