Almost one-third of the UK’s total emissions relate to the energy used in existing buildings. This paper discusses how it is clear that improvements in the energy efficiency performance of buildings (and the way in which occupiers use them) are absolutely central to the UK Government’s2050 net zero carbon emissions target. It anaylyses how some of the impetus towards driving down operational energy usage is statute-led (such as the Streamlined Energy and Carbon Reporting [SERC] regulations) but so too is the upshift in emand for greener buildings from occupiers and investors.The paper dicusses the numerous ways in which improvements can be made to a building and its services that may well improve its energy performance certificate (EPC), but also argues that it is vitally important to educate occupiers on ways in which their actions can have a huge impact on thebuilding’s in-use performance. The paper discusses a significant hurdle to implementing energy efficiency improvements: currently, most commercial leases do not adequately address the issues involved, including often highly contentious areas such as consent for alterations, whether itis the landlord or the tenant that pays, and whether or not changes need to be reinstated at lease end. The paper analyses ways to address this: by moving the way in which leases are drafted towards the green lease model, such as that set out in the Better Building Partnership Green LeaseToolkit. Such leases include clauses which provide for environmental performance improvements, management and monitoring as well as the way reinstatement at least end is dealt with. In the paper concludes that, alongside implementing physical energy efficiency improvements, monitoring energyuse and educating building users, landlords and tenants must forge a new, collaborative approach in order to reach net zero by 2050.
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