Deduct for battery storage, additional switchgear, and room to house the mechanical equipment
Real estate cost, lease cost, land cost, opportunity cost, building structure, construction of floors, walls, ceiling.
Deduct for hydrogen and battery monitoring, louvers and dampers, fire suppression
deduct for HVAC, CW system, roof top condensers, ventilation, controls, and associated structural and roofing costs.
Cost to upsize the generator and switchgear, depending on load.
Minimum 2% (often more) gain in system efficiency; larger gains in <50%
Power for cooling
Operating cost for the mechanical system
Deduct for maintaining monitoring systems and mechanical systems
Overhauls and major maintenance
Deduct for battery, capacitor & fan replacements vs bearing overhauls
UPS lifespan of 12-15 years vs. 25 – 30+ for DRUPS. UPS system requires complete replacement during lifecycle of DRUPS. Mechanical system lifecycle is 15 to 20 years, one replacement during DRUPS lifecycle.