In our first article on the Minimum Energy Efficiency Standard (MEES) regulations, we set out the core elements of MEES, what it means, the requirements, the exemptions and the penalties. In this article we consider the wider issues that MEES may present in the landlord and tenant relationship and the potential disputes that may arise. Both landlords and tenants need to consider its effect throughout the lease, from the terms agreed for the lease, the terms of any licences, the implementation of rent reviews, the operation of any break clause and considerations on lease expiry.