Energy Company Obligation: Wales
The question
To ask the Secretary of State for Energy Security and Net Zero, how many homes in Wales are awaiting rectification of work carried out under the ECO4 scheme; and what is the constituency‑level breakdown of those cases.
Answered by Martin McCluskey
The Government commissioned an independent statistical audit in April 2025. Unfortunately, the samples are not substantial enough to reliably perform regional analysis.
Due to the level of non-compliance found for EWI measures, the Government is offering a comprehensive on-site audit to all households where external wall insulation (EWI) was installed under ECO4 or GBIS. This check will be provided at no cost to the consumer.
Should any issues requiring action be found, these should be remediated by the original installer. Where the installer has ceased trading, protections under the installation guarantee policy should be invoked.
Checks across all measures under ECO4 and GBIS, will continue to be carried out by TrustMark and certification bodies as part of routine surveillance.
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