"E Manage" is a cloud service which continuously supports solutions, ranging from detecting issues for energy efficiency of facilities, to providing how to improve the operations and the facilities. Its visualization function, which E Manage provides, displays measurement results of power consumption, e.g. amount of used electricity per breaker and of gas, by changing over the transition per year, month, week, day (per 1 hour), or date (per 30 min.) Also the function accumulates results of the power consumption per system, and details of power consumption per the lighting system and per the power system, for users to check. Through clarifying when, where, for what, and how much energy was used, and improving power operations for demand control such as that for the lighting device or air conditioner for each detected issue, this services contributes to reduce customer’s energy consumption.