What you need to know and how to prepare
HNTAS (the Heat Network Technical Assurance Scheme) helps regulate heat networks by setting minimum technical standards and providing independent checks to show that those standards are being met.
Whether you run heat networks in social housing or private housing, the best time to prepare is before the standards are formally mandated across the sector.
What is HNTAS?
HNTAS supports mandatory technical standards by giving heat network operators a structured way to prove they meet the requirements. It will be phased in over time, once policy proposals are consulted on and finalised.
This page is for you if you’re responsible for:
- Social housing: housing associations, local authorities, Arms-Length Management Organisation (AMOs), managing agents
- Private housing: developers, Build to Rent (BTR) operators, freeholders, managing agents, ESCo/asset owners
- Delivery partners: designers, Operation and Maintenance providers, equipment suppliers and others in the supply chain
HNTAS is all about technical quality and performance
Department for Energy Security and Net Zero (DESNZ) is introducing regulatory technical requirements supported by HNTAS.
Draft HNTAS documentation published by government sets out what heat networks will need to demonstrate, including:
- The technical requirements to be met
- Performance monitoring requirements
- Key failures to be avoided
- The evidence required to demonstrate conformity
And the draft assessment procedures describe how heat networks can demonstrate compliance with HNTAS.
What HNTAS means for metering & billing
HNTAS places stronger expectations on heat networks to ensure accurate metering, reliable performance data and transparent billing. The draft Metering & Monitoring Standard (MMS) reinforces this by defining meter point locations, minimum technical requirements and mandatory monitoring points that support fair, usage‑based billing and ongoing performance verification. Together, they make high‑quality metering and dependable data capture essential for demonstrating compliance.
How the G10 meets these metering & billing expectations
The G10 Smart Metering Hub directly supports HNTAS and MMS by delivering accurate data, strong monitoring capability and transparent billing. Key features include:
- Real‑time consumption visibility to support accurate, usage‑based billing.
- Automated meter discovery & tamper/error detection for assured data quality.
- Open‑access integration with billing systems for transparent, consistent billing.
- Remote tariff management and top‑ups, enabling smoother, more responsive billing processes.
These capabilities align strongly with the data‑driven, performance‑led approach expected under the draft HNTAS and MMS standards.
