Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what assessment his Department has made of the potential impact of low-carbon heat networks on (a) reducing (i) NOx emissions and (ii) particulate matter (PM2.5) in urban areas and (b) public health outcomes.

Our assessment of the potential impact of low-carbon heat networks includes monetised air quality benefits based on Green Book (Table 15) fuel consumption standards[1]. Our published consultation stage Zoning Impact Assessment estimated the value of those benefits at between £50m and £270m (2020 prices, 2024 base year) over 40 years. This range includes the health benefits of both reduced NOx and reduced particulate matter.

We are working with Defra to ensure heat network zoning policy contributes to the UK’s wider air quality goals - supporting cleaner air and better public health.

[1] https://www.gov.uk/government/publications/valuation-of-energy-use-and-greenhouse-gas-emissions-for-appraisal - Table 15