On-Demand Shade System from Sunarc infuses liquid foam into the cavity formed by two layers of double polyethylene covered greenhouses. During the day, the foam mimics clouds in lessening and diffusing energy penetration when solar radiation levels are high. At dusk, the remaining liquid from collapsed foam is drained back into the surfactant reservoirs and recycled to be used again the next day. Sensors ensure automatic production by regulating the operation of foam generators and sprinklers as conditions demand. Software is programmable to local needs and may be monitored and operated by remote computer control. The shade system maintains the thermal equilibrium in a control environment. As a result, optimal temperature conditions during each 24-hour cycle can be maintained year-round.