How to save energy and reduce consumption in hotels

according to my investigation experience in the hotel industry, hotels should save energy: reasonably control the lighting, use some LED landscape lights, and use LED lighting in the lobby or aisle. It is practical to install frequency converter in elevator, use frequency converter in air-conditioning water pump system or switch to multi-stage energy-saving water pump and low-power motor, transform the kitchen stove in restaurant and use energy-saving fire stove, which is difficult to say about the room. Generally, it is to transform the toilet flushing system and save water.