Peachtree Mechanical Inc. was contracted under a firm fixed price to upgrade the Maxwell Air Force Base BLDG 1410 Energy Plant. Work includes but not limited to excavation, underground high voltage duct banks, transformers, concrete for new Air Handler, pumps, and Chillers, install 5 new centrifugal pumps, and installation of 5 - 1000-ton chillers. Also includes DDC controls, utility piping, chilled water and condenser water piping, and renovation of 6 existing cooling towers. Installed 2 new 4060-amp services and 1 new 3000-amp services. Project required the installation of 5-1000-ton chillers required 480-volt 1200amp feeder to new chillers. new chillers were connected to 4000-amp services with new 3000-amp 480-volt service replaced existing 4160 switch and step-down transformer change out required a complete plant shut down to remove existing 4160 service. New 480 transition sections installed to existing 480-volt switchboard.