Guidance
Heat Network Technical Assurance Scheme (HNTAS): technical specifications
Draft versions of the upcoming regulatory technical requirements established to help heat network operators demonstrate compliance.
Applies to England, Scotland and Wales
Documents
Details
These draft technical specifications relate to the upcoming Heat Network Technical Assurance Scheme (HNTAS) and detail the technical obligations to be fulfilled as part of the scheme, including the:
- technical requirements to be met
- performance monitoring requirements to be met
- key failures to be avoided
- evidence requirements to be provided to demonstrate conformity with HNTAS
They are for use by:
- heat network developers
- heat network designers
- heat network operators
- heat network equipment suppliers
- organisations within the heat network supply chain
Each technical specification corresponds to an equivalent assessment procedure.
Next steps
We will publish further draft technical specifications and assessment procedures for new build networks and for existing networks at a later date.
Final versions of these documents will be available once the scheme is live in 2026.
Updates to this page
Published 30 July 2025