This document provides recommendations for retrofitting a warehouse to improve energy efficiency. It identifies lighting and heating as major areas for savings. Replacing traditional lighting with energy efficient LEDs and installing occupancy sensors can reduce lighting costs by 70%. Installing spray foam insulation can cut HVAC energy usage in half. An energy service company can implement multiple retrofits with no upfront costs by using the savings to pay for the project over time. This ensures capital funding is no longer a barrier to improving warehouse energy efficiency.