Building with energy management system

An energy management system for managing a building having a network of energy storage assets and energy consuming assets, said network being connected to an alternating current electric supply grid having a normal frequency through the energy management system linked to a server, in which:

• a. the energy management system is configured to:
• measure over a period of time the energy consumption against time of the energy consuming assets and store the measurements taken;
• measure over a period of time the energy stored against time in the energy storing assets and store the measurements taken;
• use the measurements of energy consumption and energy stored to derive a forecasted base net energy need in individual time periods;
• and
• export the forecasted net energy need in the individual time periods to one or more third parties;
• and
• b. the energy consumed or stored in the network varies according to requests made by the one or more third parties, whereby the energy management system is configured to, for each individual time period, maintain the forecasted base energy need at or below a maximum level of power consumption for the respective individual time period set by the one or more third parties, and in which the impact of varying the energy demands upon the building is evaluated and such evaluation is used to accept or reject such a request by a third party.

An energy management system for managing a building having a network of energy storage assets and energy consuming assets, said network being connected to an alternating current electric supply grid having a normal frequency through the energy management system linked to a server, in which

• a. The energy management system is configured to:
• measure over a period of time the energy consumption against time of the energy consuming assets and store the measurements taken;
• measure over a period of time the energy stored against time in the energy storing assets and store the measurements taken;
• use the measurements of energy consumption and energy stored to derive a forecasted base net energy need in individual time periods;
• and
• export the forecasted base net energy need in the individual time periods to one or more third parties;
• and
• b. the energy consumed or stored in the network varies according to requests made by the one or more third parties, whereby the energy management system is configured to, for each individual time period, maintain the forecasted base energy need at or below a maximum level of power consumption for the respective individual time period set by the one or more third parties, and in which the impact of varying the energy demands upon the building is evaluated and such evaluation is used to accept or reject such a request by a third party;
• the overall benefit to the system of requests or offers made by multiple third parties is evaluated by the energy management system according to either predetermined or dynamic criteria;
• c. the said requests are implemented in order of preference;
• d. the energy storage assets are limited to receive a pre-set maximum of their storage capacity though normal demands, the remaining capacity being available to the electric supply grid to off-load excess power when frequency or voltage of the electric supply exceeds a pre-set maximum;
• energy is exported to a Distributed Network Operator within a limit determined by the Distributed Network Operator.