Supplying electrical power to multiple loads from more than one power source

1. A method of supplying electrical power to a plurality of sub-loads, the method comprising:

obtaining a power demand, for a particular time period, of each sub-load of a plurality of sub-loads in which each of the sub-loads is supplied primary power of a primary power source, the primary power supplied to each of the sub-loads being individually metered by a third party;

obtaining an amount of available secondary power of a secondary power source that is available for the particular time period;

connecting, during the particular time period, the secondary power source instead of the primary power source to a first subset of sub-loads of the plurality of sub-loads based on an aggregate power demand of the first subset of sub-loads being less than or equal to the amount of available secondary power;

connecting, during the particular time period, the primary power source instead of the secondary power source to a particular sub-load of the plurality of sub-loads, the particular sub-load not being included in the first subset of sub-loads based on a sum of a particular demand of the particular sub-load and the aggregate power demand of the first subset of sub-loads exceeding the amount of available secondary power;

comparing the first subset of sub-loads with a second subset of sub-loads of the plurality of sub-loads based on secondary power distribution factors;

selecting the second subset of sub-loads based on the comparing;

connecting, during a second time period, the secondary power source instead of the primary power source to the second subset of sub-loads based on the selecting of the second subset of sub-loads and an aggregate power demand of the second subset of sub-loads being less than or equal to the amount of available secondary power; and

connecting, during the second time period, the primary power source instead of the secondary power source to the first subset of sub-loads based on the selecting of the second subset of sub-loads.

2. The method of claim 1 , wherein the primary power includes alternating-current electrical power having one or more first electrical properties, and wherein the secondary power source supplies secondary power including alternating-current electrical power having one or more second electrical properties, and wherein connecting the secondary power source instead of the primary power source to the first subset of sub-loads includes:

disconnecting the first subset of sub-loads from the primary power source;

after disconnecting the first subset of sub-loads from the primary power source, connecting the first subset of sub-loads to the secondary power source; and

synchronizing the secondary power with the primary power such that one or more of the one or more second electrical properties match one or more of the one or more first electrical properties prior to connecting the secondary power source to the first subset of sub-loads.

3. The method of claim 1 , wherein obtaining the power demand, for the particular time period, of each sub-load of the plurality of sub-loads includes predicting the power demand of one or more sub-load of the plurality of sub-loads with respect to the particular time period.

4. The method of claim 3 , wherein predicting the power demand is based on one or more of: historical data of the power demand, a weather forecast, a current season, a current day of the week, a current day of the year, and an event occurring during the particular time period.

5. The method of claim 1 , wherein obtaining the amount of available secondary power that is available for the particular time period includes predicting the amount of available secondary power with respect to the particular time period.

6. The method of claim 5 , wherein predicting the amount of available secondary power is based on one or more of: historical data of the amount of available secondary power, a weather forecast, a current season, and a conversion efficiency.

7. The method of claim 1 , further comprising obtaining a cost of primary power for the particular time period for each of the sub-loads, and wherein connecting, during the particular time period, the secondary power source instead of the primary power source to the first subset of sub-loads of the plurality of sub-loads is based on the cost of primary power for the particular time period for one or more of the sub-loads.

8. The method of claim 7 , wherein obtaining the cost of primary power for the particular time period comprises predicting the cost of primary power for the particular time period.

9. The method of claim 8 , wherein predicting the cost of primary power is based on one or more of: historical data of the cost of primary power, a weather forecast, a current season, a current day of the week, a current day of the year, and an event occurring during the particular time period.

10. The method of claim 1 , wherein the secondary power distribution factors includes one or more of: a first cost of primary power to a first sub-load of the first subset of sub-loads, a second cost of primary power to a second sub-load of the second subset of sub-loads, a first duration of time that the first sub-load has been connected to the secondary power source instead of the primary power source, a second duration of time that the second sub-load has been connected to the secondary power source instead of the primary power source, a first level of service of the first sub-load, and a second level of service of the second sub-load.

11. A system for supplying electrical power to a plurality of sub-loads, the system comprising:

one or more switching units; and

a selection unit communicatively coupled to the one or more switching units, the selection unit configured to perform operations comprising:

obtaining a power demand, for a particular time period, of each sub-load of a plurality of sub-loads in which each of the sub-loads is supplied primary power of a primary power source, the primary power supplied to each of the sub-loads being individually metered by a third party;

obtaining an amount of available secondary power of a secondary power source that is available for the particular time period;

directing the one or more switching units to connect, during the particular time period, the secondary power source instead of the primary power source to a first subset of sub-loads of the plurality of sub-loads based on an aggregate power demand of the first subset of sub-loads being less than or equal to the amount of available secondary power;

directing the one or more switching units to connect, during the particular time period, the primary power source instead of the secondary power source to a particular sub-load of the plurality of sub-loads, the particular sub-load not being included in the first subset of sub-loads based on a sum of a particular demand of the particular sub-load and the aggregate power demand of the first subset of sub-loads exceeding the amount of available secondary power;

comparing the first subset of sub-loads with a second subset of sub-loads of the plurality of sub-loads based on secondary power distribution factors;

selecting the second subset of sub-loads based on the comparing;

connecting, during a second time period, the secondary power source instead of the primary power source to the second subset of sub-loads based on the selecting of the second subset of sub-loads and an aggregate power demand of the second subset of sub-loads being less than or equal to the amount of available secondary power; and

connecting, during the second time period, the primary power source instead of the secondary power source to the first subset of sub-loads based on the selecting of the second subset of sub-loads.

12. The system of claim 11 , wherein obtaining the power demand, for the particular time period, of each sub-load of the plurality of sub-loads includes predicting the power demand of each sub-load of the plurality of sub-loads with respect to the particular time period.

13. The system of claim 11 , wherein obtaining the amount of available secondary power that is available for the particular time period includes predicting the amount of available secondary power with respect to the particular time period.

14. The system of claim 11 , wherein the operations further comprise obtaining a cost of primary power for the particular time period for each of the sub-loads, wherein connecting, during the particular time period, the secondary power source instead of the primary power source to the first subset of sub-loads of the plurality of sub-loads is based on the cost of primary power for the particular time period for one or more of the sub-loads.

15. One or more computer-readable storage media including computer-executable instructions configured to cause a system to perform operations, the operations comprising:

obtaining a power demand, for a particular time period, of each sub-load of a plurality of sub-loads in which each of the sub-loads is supplied primary power of a primary power source, the primary power supplied to each of the sub-loads being individually metered by a third party;

obtaining an amount of available secondary power of a secondary power source that is available for the particular time period;

directing connection, during the particular time period, of the secondary power source instead of the primary power source to a first subset of sub-loads of the plurality of sub-loads based on an aggregate power demand of the first subset of sub-loads being less than or equal to the amount of available secondary power;

directing connection, during the particular time period, of the primary power source instead of the secondary power source to a particular sub-load of the plurality of sub-loads, the particular sub-load not being included in the first subset of sub-loads based on a sum of a particular demand of the particular sub-load and the aggregate power demand of the first subset of sub-loads exceeding the amount of available secondary power;

comparing the first subset of sub-loads with a second subset of sub-loads of the plurality of sub-loads based on secondary power distribution factors;

selecting the second subset of sub-loads based on the comparing;

connecting, during a second time period, the secondary power source instead of the primary power source to the second subset of sub-loads based on the selecting of the second subset of sub-loads and an aggregate power demand of the second subset of sub-loads being less than or equal to the amount of available secondary power; and

connecting, during the second time period, the primary power source instead of the secondary power source to the first subset of sub-loads based on the selecting of the second subset of sub-loads.

16. The one or more computer-readable storage media of claim 15 , wherein obtaining the amount of available secondary power that is available for the particular time period includes predicting the amount of available secondary power with respect to the particular time period.

17. The one or more computer-readable storage media of claim 15 , wherein the operations further comprise obtaining a cost of primary power for the particular time period for each of the sub-loads, wherein connecting, during the particular time period, the secondary power source instead of the primary power source to the first subset of sub-loads of the plurality of sub-loads is based on the cost of primary power for the particular time period for one or more of the sub-loads.