Control Electric power systems 320 Air conditioning 144 Heating 133 Electric power system stability 100 Ventilation 89 Humidity 44 Buildings 35 Mobile robots 31 Robots 31 Electric equipment 30 Programmable controllers 30 Electric lighting 27 Electric power system 22 Electric utilities 18 Electric power distribution 17 Insect pests 17 Microcontrollers 17 Weeds 17 Electric power transmission 16 Design and construction 15 Load dispatching 14 Remote control 14 Automatic control 13 Electric controllers 13 Equipment and supplies 13 Interconnected electric utility systems 13 Protection 13 Capacitors 12 Deregulation 12