Facility energy management system
First Claim
1. A method of managing energy supplied to a facility comprising:
- a. monitoring a marginal cost of electricity from an electricity vendor;
b. determining a facility current electrical load and a facility current heating load;
c. when the marginal cost of electricity is greater than a marginal cost of a fuel or the current electrical load is greater than a peak billed demand threshold, obtaining the fuel to supply energy to meet the heating load; and
d. when the marginal cost of electricity is less than the marginal cost of the fuel and the current electrical load is less than the peak billed demand threshold, obtaining electricity from the electricity vendor up to the peak billed demand threshold to supply energy to the meet at least part of the current heating load, and obtaining the fuel to supply energy to meet any current heating load not met by energy from the electricity.
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Accused Products
Abstract
A method of managing energy supplied to a facility comprises monitoring a marginal cost of electricity from an electricity vendor; and determining a facility current electrical load and a facility current heating load. The method also comprises obtaining fuel to supply energy to meet the heating load when the marginal cost of electricity is greater than a marginal cost of a fuel or the current electrical load is greater than a peak billed demand threshold. When the marginal cost of electricity is less than the marginal cost of the fuel and the current electrical load is less than the peak billed demand threshold, electricity is obtained from the electricity vendor up to the peak billed demand threshold to supply energy to the meet at least part of the current heating load, and fuel is obtained to supply energy to meet any current heating load not met by energy from the electricity.
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Citations
21 Claims
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1. A method of managing energy supplied to a facility comprising:
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a. monitoring a marginal cost of electricity from an electricity vendor;
b. determining a facility current electrical load and a facility current heating load;
c. when the marginal cost of electricity is greater than a marginal cost of a fuel or the current electrical load is greater than a peak billed demand threshold, obtaining the fuel to supply energy to meet the heating load; and
d. when the marginal cost of electricity is less than the marginal cost of the fuel and the current electrical load is less than the peak billed demand threshold, obtaining electricity from the electricity vendor up to the peak billed demand threshold to supply energy to the meet at least part of the current heating load, and obtaining the fuel to supply energy to meet any current heating load not met by energy from the electricity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of managing energy supply to a facility comprising:
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a. determining a facility current heating load;
b. obtaining electricity from an electricity vendor to supply energy to meet the heating load;
c. monitoring energy prices from a power pool; and
d. when the energy price of the power pool exceeds the collective cost of obtaining electricity from the electricity vendor and obtaining fuel from a fuel source;
stopping supply of electricity from the electricity vendor to supply energy to meet the heating load, obtaining fuel from the fuel source to supply energy to meet the heating load, and obtaining electricity from the electricity vendor and selling the obtained electricity to the power pool. - View Dependent Claims (14)
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15. An energy supply management system for a facility comprising:
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a. electrical and heat load sensors for determining a current electrical load and a current heating load of a facility;
b. a controller communicative with the sensors and with an electricity vendor'"'"'s electricity cost and a fuel source fuel cost, the controller programmed to obtain fuel from a fuel source to supply energy to meet the heating load when the marginal electricity cost is greater than a marginal cost of the fuel or the current electrical load is greater than a peak billed demand threshold, and obtain electricity from the electricity vendor up to the peak billed demand threshold to supply energy to meet at least part of the heating load and to obtain fuel from the fuel source to supply energy to meet any of the heating load not met by energy from the electricity when the marginal electricity cost is less than the marginal cost of the fuel and the current electrical load is less than the peak billed demand threshold. - View Dependent Claims (17, 18, 19, 20, 21)
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16. An energy supply management system for a facility comprising:
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a. a sensor for determining a current heating load of a facility;
b. a controller communicative with the sensor and with an electricity vendor electricity cost, a fuel source fuel cost and a power pool price, the controller programmed to obtain electricity from the electricity vendor to supply energy to meet the current heating load;
when the energy price of the power pool exceeds the collective cost of obtaining electricity from the electricity vendor and fuel from the fuel source, stop supply of electricity from the electricity vendor to supply energy to meet the heating load, obtain fuel from the fuel source to supply energy to meet the heating load, and obtain electricity from the electricity vendor and sell the obtained electricity to the power pool.
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Specification