The United Nations estimates that total global energy consumption in the agri-cultural, buildings, industrial, and trans-portation sectors together could be reduced by 35 per cent by the year 2020 through the adoption of energy-efficient technologies (UNDPCSD, 1997). This document summarises some of the opportunities to reduce GHG emissions in the following sectors: commercial/institutional; residential; industrial; electricity generation/energy supply; transportation; solid waste and wastewater disposal; and agriculture.