Energy efficiency actions to reduce emissions include retrofitting of all buildings (20% reduction), establishment of policies for energy efficiency building codes for all building sectors (30% reduction) and implementation of energy efficiency in hotels (20% reduction). Transport. The transport sector (land and marine) contributed an average 39% of Grenada’s greenhouse gas emissions in the 2010 to 2014 period. Grenada plans to reduce its emissions in the transport sector by 20% by 2025.