The age-old problem with leased spaces is that there are few clear incentives for either building owners or tenants to invest in energy efficiency. Utilities promoting efficiency in the commercial sector are often thwarted by this recurring dilemma, yet they know that great opportunities exist for saving energy. To begin to address this, the Building Owners and Managers Association (BOMA) and the Real Property Association of Canada (REALPAC) have just unveiled new guidelines for green leases, providing the framework for more efficient buildings, for both new construction and retrofit projects. In this web conference, we hear how landlords and tenants can negotiate and implement a green lease to meet their goals for energy-cost reduction, greenhouse gas reduction, and green building certification.