“…The key to promoting demand explicitness is the owner's willingness to transform, and the will depends on the owner's energy-saving income, energy-saving cost, energy-saving awareness, and energy-saving service quality. There are 20 variables that constitute the demand market subsystem of the existing building energy-saving renovation: owner cost [18], owner income [29], owner's willingness [15], special funds [13], publicity, ESCO asset level, government energy-saving pressure [12], loan discount, back income, investment risk, explicit demand [24], project achievability, other reconstruction method, potential demand [24], incentive policies [13], energy prices, propaganda, owners' energy-saving awareness, and tax incentives. The market regulation system with the government as the main body interacts with other market subsystems.…”