System and method of storing and capitalizing off-peak electricity
Aspects of the invention relate to system and method of storing off-peak electricity. The system includes an energy storage device electrically coupled to an electricity grid of at least one electricity provider, where the energy storage device has a storing capacity and is chargeable or dischargeable, upon demand, and a controller configured to control operation of the energy storage device such that the energy storage device is charged with the off-peak electricity at an off-peak time each day when a demand for electricity is low from the electricity grid, and is discharged at a peak time each day when the demand for electricity is high, to provide an amount of the stored electricity, to the at least one electricity provider.
1. A system of storing off-peak electricity associated with a property, comprising:
an energy storage device electrically coupled to an electricity grid of at least one electricity provider, wherein the energy storage device is chargeable or dischargeable, upon demand; and
a controller configured to control operation of the energy storage device such that the energy storage device is charged at an off-peak time each day when a demand for electricity is low, with an amount of off-peak electricity, W off , from the electricity grid, and is discharged at a peak time each day when the demand for electricity is high, to provide an amount of electricity, W, to the at least one electricity provider,
wherein the amount of the electricity provided to the at least one electricity provider is
W =(1−η)× W off −W c ,
wherein η is a loss rate of the electricity stored in the energy storage device, and W c is an amount of consumed electricity of which the property consumes per day; and
wherein the off-peak electricity is capitalized for the property owner each day at an amount of
P =( R×W )−( R off ×W off )−(μ× W off ),
wherein R is a rate of which the property owner sells the stored electricity to the at least one electricity provider at the peak time, and R off is a rate of which the property owner buys the electricity from the at least one electricity provider at the off-peak time, and μ is a managing cost for maintaining the energy storage device, and wherein R is at least two times greater than R off .
2. The system of claim 1 , further comprising an electricity meter electrically coupled to the energy storage device and the controller for monitoring the amount of off-peak electricity W off , and the amount of electricity W.
3. The system of claim 1 , wherein the energy storage device comprises one or more re-changeable batteries, one or more super-capacitors, or a combination of them.
4. The system of claim 1 , wherein the controller comprises one or more central processing units (CPUs).
5. A network for storing off-peak electricity associated with a plurality of properties, {B k }, k=1, 2, . . . N, N being the number of the plurality of properties, comprising:
a plurality of energy storage devices, wherein each energy storage device is chargeable or dischargeable, upon demand, and is associated with a respective property B k ; and
a control unit coupled to the plurality of energy storage devices and an electricity grid of at least one electricity provider, wherein the control unit comprises a plurality of controllers, each controller coupled to a respective energy storage device associated with the respective property B k , and configured to control operation of the energy storage device such that the energy storage device is charged at an off-peak time each day when a demand for electricity is low, with an amount of off-peak electricity, (W off ) k , from the electricity grid, and is discharged at a peak time each day when the demand for electricity is high, to provide an amount of electricity, W k , to the at least one electricity provider,
wherein for the respective property B k , the amount of the electricity provided to the at least one electricity provider each day is
W k =(1−η k )×( W off ) k −( W c ) k ,
wherein η k is a loss rate of the electricity stored in the energy storage device associated with the respective property B k , and (W c ) k is an amount of consumed electricity of which the respective property B k consumes per day;
wherein the off-peak electricity is capitalized for the respective property B k each day at an amount of
P k =R k ×W k −( R off ) k ×( W off ) k −μ k ×( W off ) k ,
wherein R k is a rate of selling the stored electricity in the energy storage device associated with the respective property B k to the at least one electricity provider at the peak time, (R off ) k is a rate of buying the electricity from the at least one electricity provider at the off-peak time for the respective property B k , and μ k is a managing cost for maintaining the energy storage device associated with the respective property B k ; and
wherein for the plurality of properties {B k }, a total amount of the electricity provided to the at least one electricity provider each day is
W
total
=
∑
k
=
1
N
W
k
,
and wherein the off-peak electricity is capitalized for the plurality of properties {B k } each day at an amount of
P
total
=
∑
k
=
1
N
P
k
.
6. The network of claim 5 , further comprising a plurality of electricity meters, each electricity meter electrically coupled to a respective energy storage device associated with the respective property B k and the controlling unit for monitoring the amount of off-peak electricity (W off ) k , and the amount of electricity, W k for the respective energy storage device associated with the respective property B k .
7. The network of claim 5 , wherein each energy storage device comprises one or more re-changeable batteries, one or more super-capacitors, or a combination of them.
8. The network of claim 5 , wherein each controller comprises one or more central processing units (CPUs).
9. A method of managing an energy storage network associated with a plurality of properties, {B k }, k=1, 2, . . . N, N being the number of the plurality of properties, and profits made from the energy storage network, comprising:
providing the energy storage network comprising:
a plurality of energy storage devices, wherein each energy storage device is chargeable or dischargeable, upon demand, and is associated with a respective property B k ; and
a control unit coupled to the plurality of energy storage devices and an electricity grid of at least one electricity provider, wherein the control unit comprises a plurality of controllers, each controller coupled to a respective energy storage device associated with the respective property B k ;
controlling, by the plurality of controllers, operations of the plurality of energy storage device such that the respective energy storage device associated with the respective property B k is charged at an off-peak time each day when a demand for electricity is low, with an amount of off-peak electricity, (W off ) k , from the electricity grid, and is discharged at a peak time each day when the demand for electricity is high, to provide an amount of electricity W k , to the at least one electricity provider; and
investing partial or complete portion of the profits made from the energy storage network into real estates, stocks, mutual funds, and a combination thereof, wherein the profits made from the energy storage network each day is at an amount of
P
total
=
∑
k
=
1
N
P
k
,
wherein P k is a profit made from an energy storage device associated with the property B k each day:
P k =R k ×W k −( R off ) k ×( W off ) k −μ k ×( W off ) k ,
wherein W k =(1−η k )×(W off ) k −(W c ) k , η k is a loss rate of the electricity stored in the energy storage device associated with the property B k , (W c ) k is an amount of consumed electricity of which the property B k consumes per day, R k is a rate of selling the stored electricity in the energy storage device associated with the property B k to the at least one electricity provider at the peak time, (R off ) k is a rate of buying the electricity from the at least one electricity provider at the off-peak time for the property B k , and μ is a managing cost for maintaining the energy storage device associated with the property B k .
10. The method of claim 9 , further comprising:
raising fund to facilitate installations and maintenance of the energy storage network through private equity or venture capital instruments, or through initial public offering (IPO) instruments.
11. The method of claim 9 , further comprising:
monitoring the amount of off-peak electricity (W off ) k , the amount of consumed electricity (W c ) k , and the amount of sold electricity W k for the property B k per day.
12. The method of claim 9 , wherein each energy storage device comprises one or more re-changeable batteries, one or more super-capacitors, or a combination of them.