CIBSE Code of Practice 1 (CP1 2020)) now includes key outputs for each objective that can be used to demonstrate a heat network is performing as expected. This includes a series of checklists to allow clients to set an initial performance target and to monitor the system against this target throughout the design development process to give investors confidence in the system's performance.

CP1 (2020) updates the original 2015 version of the document which was highly successful in establishing minimum standards for district heating projects. While the overall structure of the code remains the same, the updated document now includes enhanced minimum and best practice requirements, references to new standards and an increased focus on outcomes to make compliance with CP1 (2020) easier to verify and check.

Other changes include recommendations on load diversity; an updated section on heat interface units (HIUs) to help address the increasing problem of oversizing; and strengthening the section on insulation levels for the primary network piping. Requirements around water quality have also been enhanced to ensure the long-term life of the network.

Alongside the revised code of practice, CIBSE has also launched a training module aimed at people working in the heat network sector including: project managers, consultants, engineers, contractors and operators and all those who want to know more about CP1 (2020) and what it will mean for their projects.

Matthew Turner, regional director at AECOM and trainer for the CIBSE Heat Networks Code of Practice training said: 'Low carbon heat networks are a key component of the government’s strategy for decarbonising heat, which remains one of the most significant challenges to achieving the net-zero carbon target. CIBSE’s revised Heat Networks Code of Practice (CP1 2020) and the updated training course that accompanies it will help support the industry in delivering the high-quality district heating projects that are needed in meeting this goal.