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Energy management systems (EMS) are automation systems that collect energy measurement data from the field and making it available to users through graphics, online monitoring tools, and energy quality analyzers, thus enabling the management of energy resources..
Energy management information systems (EMIS) are a broad and rapidly evolving family of software tools that monitor, analyze, and control building energy use and system performance.
All EMIS deployments can be broken down into three functional elements—capabilities, scope, and stack..
A good example of a very basic EMS is the thermostat in your house.
The thermostat has an interface where you can set a heating or cooling schedule, a sensor that measures the temperature in the room, a controller that tells the heater to turn on or off, and the actual heating or cooling element itself..
An energy management system (EMS) is a system of computer-aided tools used by operators of electric utility grids to monitor, control, and optimize the performance of the generation or transmission system.
Also, it can be used in small scale systems like microgrids..
Energy management is the proactive and systematic monitoring, control and optimization of an organization's energy consumption to conserve use and decrease energy costs.
Energy management includes minor actions such as monitoring monthly energy bills and upgrading to energy-saving lightbulbs..
With a SCADA you can see real-time data but it does not have analysis tools.
An EMS contains a suite of tools to help you analyse your energy data, and track energy use over time across multiple factories, floors etc.
With an EMS you can apply tariffs to convert energy to costs or CO2 emissions for advanced reporting..
