Hopefully, the definition will be a rigorous tool to help building developers and operators to achieve the maximum affordable onsite improvements in the building’s emissions. Once these onsite improvements are achieved, the definition will further set out how the residual emissions can be genuinely reduced through credible, independently verified offsite activities, leading to “net zero” or event “net negative”.

Alternatively, the definition could be a cheap and nasty fig leaf facilitating another decade of flat-line performance on emissions in the property sector.

In order to avoid the latter it is important that folks respond to the consultation on the meaning on “net zero” in buildings, which closes on the 1st March. Looking at the consultation, I would say that the outcome is finely balanced – so please do make the effort to understand the issues and make your voice heard in the consultation. Filling in a response will take around ½ hour – what better use of your time?