An energy management system manages energy consumption of managed device(s) disposed to receive energy via a meter connected to an energy supply, the energy supply. A system controller has a computer processor that instructs the managed device(s) to employ an operational mode based on the priority,
An energy management system manages energy consumption of managed device(s) disposed to receive energy via a meter connected to an energy supply, the energy supply. A system controller has a computer processor that instructs the managed device(s) to employ an operational mode based on the priority, the energy need, the demand state, and whether the energy consumption rate of the managed device(s) exceeds energy available from at least one of the external energy source and internal energy source.
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1. An energy management system for at least one managed device disposed to receive energy via a meter connected to an energy supply including at least one of an secondary external energy source and an internal energy source, the internal energy source configured to provide primary power for the at l
1. An energy management system for at least one managed device disposed to receive energy via a meter connected to an energy supply including at least one of an secondary external energy source and an internal energy source, the internal energy source configured to provide primary power for the at least one managed device, the system comprising: a system controller comprising a computer processor configured for communication with the at least one managed device, the meter, and a computer readable storage medium containing computer executable instructions that when executed by the computer processor performs a method comprising: obtaining an energy consumption rate of the at least one managed device from the meter;determining whether the energy consumption rate exceeds energy available from the internal energy source configured to provide primary power for the at least one managed device;obtaining demand information from a demand information source, the demand information comprising information about a demand state of the external energy source;determining from the demand information whether the demand state of the external energy source is a peak demand state;determining a priority of the at least one managed device;determining an energy need of the at least one managed device; andinstructing the at least one managed device to employ an operational mode based on the priority, the energy need, the demand state and whether the energy consumption rate of the at least one managed device exceeds energy available from at least one of the external energy source and internal energy source. 2. The system of claim 1 wherein the demand information source is a remote demand server and obtaining demand information comprises receiving a demand state from the remote demand server. 3. The system of claim 1 wherein the demand information source is a user interface and obtaining demand information comprises receiving a demand state from the user interface. 4. The system of claim 1 wherein the demand information source is a computer readable storage medium and obtaining demand information comprises receiving the demand state from the computer readable storage medium. 5. The system of claim 1 wherein the system controller further performs determining the value of a demand limit, and determining an operational mode comprises maintaining a consumption rate of energy from the external energy source below the demand limit. 6. The system of claim 5 wherein the demand information source includes a demand limit allocated to a facility in which the at least one managed device resides based on time of day, actual energy consumption of the external energy source, and expected energy consumption of the external energy source. 7. The system of claim 6 wherein the system controller further performs sending local energy consumption information to the demand information source. 8. The system of claim 5 wherein determining the value of a demand limit comprises receiving the demand limit from a remote computer-based demand server. 9. The system of claim 1 wherein the system controller further performs receiving managed device information including at least one of a maximum energy consumption rate, available operational modes, and a minimum energy consumption rate, and determining an operational mode is further based on the managed device information. 10. The system of claim 9 wherein the managed device information is supplied by at least one managed device. 11. The system of claim 9 wherein the managed device information is supplied by a user. 12. A facility energy management system for at least one managed device, the system configured for managing energy consumption of a facility connected to an energy supply, the energy supply including at least one of an external energy source and an internal energy source, the internal energy source configured to provide primary power for the at least one managed device, the facility having at least one energy consuming device, and the system comprising: a system controller comprising a computer processor configured for communication with the at least one managed device, the external energy source, and the internal energy source and with a computer readable storage medium containing computer executable instructions that when executed by the computer processor performs a method comprising: obtaining external energy source information including demand state, demand limit, and cost;obtaining internal energy source information including at least one of a quantity of energy available and a supply rate available, the internal energy source configured to provide primary power for the at least one managed device;establishing a maximum energy consumption value for the facility based on the external and internal energy source information;instructing the at least one managed device to employ an operational mode based on the maximum energy consumption value, the demand state, and the demand limit. 13. The system of claim 12 wherein the method further comprises obtaining a priority and an energy need of the managed device and instructing the energy consuming device to enter an operational mode is also based on at least one of the priority and the energy need of the managed device. 14. The system of claim 12 wherein the managed device comprises an energy consuming device. 15. The system of claim 12 wherein the facility comprises a utility and the managed device comprises a facility including at least one energy consuming device. 16. The system of claim 12 wherein the method further comprises controlling distribution of energy from the internal energy source between charging local energy storage and redistributing energy to the at least one energy consuming device during peak demand period. 17. The system of claim 12 wherein the method further comprises controlling distribution of energy consumption between use of energy from the external energy source and use of energy from discharging energy storage. 18. The system of claim 12 wherein obtaining external energy source information comprises communicating with a computer-based demand server configured to provide the external energy source information. 19. The system of claim 12 wherein the at least one managed device is disposed to receive the energy from the external energy source via a meter connected to an external energy supply, and the method further comprises obtaining an energy consumption rate of the managed device from the meter, and instructing the at least one managed device to employ an operational mode is further based on the energy consumption rate obtained from the meter. 20. The system of claim 12 wherein the method further comprises determining a priority of each of the at least one managed devices, determining an energy need of the at least one managed device, and instructing the at least one managed device to employ an operational mode is further based on the priority and energy need of the at least one managed device. 21. A facility energy management system for a facility connected to and selectively drawing energy from an external energy supply, the system comprising: a computer readable storage medium including computer executable code in a format readable and executable by a computer processor;a system controller including a computer processor and connected to the computer readable storage medium, the system controller configured to load and execute the computer executable code to: receive a facility demand limit;determine a demand state that is one of at least a peak demand state and an off-peak demand state;allocate a facility energy demand of a facility based on a priority of an energy consuming device in the facility and on an energy need of the energy consuming device, the energy need being determined by a minimum energy requirement of the energy consuming device for proper operation;responsive to determining that a local energy storage unit is present and is depleted, initiate charging the local energy storage unit during an off-peak demand state;responsive to determining that a local energy storage unit is present and that an energy demand of the facility exceeds the demand limit, draw energy from the local energy storage unit;responsive to determining that a local energy generation device is present, initiate drawing energy from the local energy generation device when an energy demand of the facility exceeds the demand limit;responsive to a high priority of the energy consuming device, instruct the energy consuming device to employ a normal operational mode;responsive to a low priority of the energy consuming device, instruct the energy consuming device to employ a reduced operational mode;responsive to an energy need of the energy consuming device exceeding an amount of energy supplied in a reduced operational mode, override an instruction to employ the reduced operational mode; andresponsive to a customer command, override an instruction to employ the reduced operational mode. 22. The system of claim 21 wherein the demand state is determined and the demand limit is received by communicating with an external computer-based demand server.
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