HNTAS: DraftNew Substationbuild assessmentheat proceduresnetworks for- newdraft buildassessment heatprocedures networksfor Substations

These draft assessment procedures for heat network substations detail the activities to be undertaken to provide assurance that the obligations in the Heat Network Technical Assurance Scheme (HNTAS) Technical Specifications are fulfilled.  

A substation is a connection between distribution networks which contains an exchange of thermal energy (for example, via plate heat exchangers) together with other necessary equipment.

The documents are for use by:

• heat network assessors
• heat network developers
• heat network designers
• heat network operators

These assessment procedures correspond to the draft HNTAS: New build heat networks - draft technical specifications for heat network substationsSubstations.

Next steps

We will be requesting feedback on the information in these documentsdocuments. shortly. We will run a change management process in parallel with the the HNTAS technical technical standards consultation which launchescloses at midday on 1615 DecemberApril 2025.2026.

We will make final versions of these documents available before the scheme starts.