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A system for generating electrical power includes one or more turbine systems, a linking system, a power receiving station, and a transmission line. The turbine systems includes a turbine, a turbine carrier that can hold the turbine in a flow of water, and a generator that produces electricity from

A system for generating electrical power includes one or more turbine systems, a linking system, a power receiving station, and a transmission line. The turbine systems includes a turbine, a turbine carrier that can hold the turbine in a flow of water, and a generator that produces electricity from rotation of a runner of the turbine. The linking system couples the turbine carriers to a fixed location. The transmission line transmits power from the generator to the power receiving station.

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1. A system for generating electrical power, comprising: a turbine system, comprising: a turbine comprising one or more runners;a turbine carrier configured to hold the turbine in a flow of water; anda generator configured to produce electricity from rotation of at least one of the runners, wherein

1. A system for generating electrical power, comprising: a turbine system, comprising: a turbine comprising one or more runners;a turbine carrier configured to hold the turbine in a flow of water; anda generator configured to produce electricity from rotation of at least one of the runners, wherein at least one of the runners is configured to rotate in response to the flow;a tether system comprising one or more tethers, wherein the tether system is configured to: couple the turbine carrier to a fixed location, andadjust a distance from the fixed location to the turbine carrier in a direction, wherein the direction is orthogonal to the flow and parallel to a surface of the flow,wherein to adjust the distance from the fixed location to the turbine carrier the tether system is configured to adjust a length of at least one of the one or more tethers at least partially based on one or more characteristics of the flow;a power receiving station on the ground; anda transmission line configured to transmit power from the generator to the power receiving station. 2. The system of claim 1, wherein the tether system is configured to couple the turbine system to an underwater location. 3. The system of claim 1, wherein the tether system is configured to suspend at least one of the one or more turbine systems from a location that is fixed relative to ground, wherein the fixed location is above the surface of the water. 4. The system of claim 1, wherein the tether system is configurable to control the position or orientation of at least one of the runners relative to the flow. 5. A system for generating electrical power, comprising: one or more turbine systems, wherein each of at least one of the one or more turbine systems comprises: a turbine comprising one or more runners; anda turbine carrier configured to hold the turbine in a flow of water;a generator configured to produce electricity from rotation of at least one of the runners, wherein at least one of the runners is configured to rotate in response to the flow;a linking system configured to couple the turbine carrier of at least one of the one or more turbine systems to a fixed location;wherein the linking system is further configured to adjustably position the turbine carrier in the flow relative to the fixed location, wherein to adjustably position the turbine carrier in the flow relative to the fixed location the linking system is configured to adjust a distance from the fixed location to the turbine carrier in a direction orthogonal to the flow and parallel to a surface of the flow at least partially based on one or more characteristics of the flow; andan electrical energy storage device. 6. The system of claim 5, wherein the flow is a natural flow. 7. The system of claim 6, wherein the linking system comprises one or more tethers configured to couple at least one of the one or more turbine systems to a fixed location. 8. The system of claim 5, wherein the linking system is configured to couple at least one of the one or more turbine systems to an underwater location. 9. The system of claim 5, wherein the linking system is configured to couple at least one of the one or more turbine systems to a ground location above the surface of the water. 10. The system of claim 5, wherein the linking system comprises a first positioning mechanism coupled to at least one of the one or more turbine systems and a second positioning mechanism, wherein the first positioning mechanism couples to the at least one turbine system from a location above the surface of the water and wherein the second positioning mechanism couples to the at least one turbine system from a location below the surface of the water. 11. The system of claim 5, wherein the linking system comprises two or more linking members, wherein each of at least one of the linking members is configured to couple at least one of the one or more turbine systems to two different locations that are fixed relative to ground. 12. The system of claim 5, wherein the one or more turbine systems comprises two or more turbine systems, wherein each of at least one of the turbine systems is coupled to a location fixed relative to the edge of the flow via the linking system by a different linking member than at least one other of the turbine systems. 13. The system of claim 12, wherein each linking member is configured to independently interact with a portion of the linking system to independently adjustably position a different one of the two or more turbine systems at a different position in the flow relative to the edge of the flow. 14. The system of claim 5, wherein the turbine carrier for at least one of the one or more turbine systems is configured to float on the water. 15. The system of claim 5, wherein the turbine carrier for at least one of the one or more turbine systems is configured to be submerged under the surface of the water. 16. The system of claim 5, wherein the location of the turbine of at least one of the one or more turbine systems depends on the water level. 17. The system of claim 5, wherein the location or orientation of the turbine of at least one of the one or more turbine systems depends on the direction or rate of flow of the water. 18. The system of claim 5, further comprising a controller coupled to at least one of the one or more turbine systems, wherein the controller is configured to control a position or orientation of at least one of the runners relative to the flow. 19. The system of claim 5, further comprising one or more sensors coupled to a controller, wherein at least one of the sensors is configured to sense at least one characteristic of the flow, wherein the controller is configured to control at least one of the one or more turbine systems in response to information from at least one of the one or more flow sensors. 20. The system of claim 5, further comprising a controller coupled to at least one of the turbine systems, wherein the controller is configured to control an orientation of at least one of the runners relative to the flow. 21. The system of claim 5, further comprising a controller coupled to at least one of the one or more turbine systems, wherein the controller is configured to control a wiring configuration of at least two of the turbine systems. 22. The system of claim 5, further comprising a controller coupled to at least one of the one or more turbine systems, wherein the controller is configured to control a number of active turbine systems in the system. 23. The system of claim 5, wherein the linking system is configurable to control a position or orientation of at least one of the runners relative to the flow. 24. The system of claim 5, further comprising a screening system upstream from at least one of the one or more turbine systems, wherein the screening device is configured to inhibit objects in the flow from contacting components of the turbine system. 25. The system of claim 5, further comprising a data center coupled to the power receiving station, wherein the data center is configured to receive power from the power receiving station. 26. A method of generating power, comprising: placing a turbine system in a flow of water, wherein the turbine system comprises: a turbine comprising one or more runners;a turbine carrier configured to hold the turbine in a flow of water; anda generator configured to produce electricity from rotation of at least one of the runners;linking the turbine system to a fixed location;generating electricity from a flow of the water through or across at least a portion of a runner of the turbine system;adjustably controlling a position of the turbine carrier in the flow of water based at least in part on adjusting a distance from the fixed location to the turbine carrier in a direction orthogonal to the flow and parallel to a surface of the flow;adjustably controlling an orientation of the turbine relative to the turbine carrier in response to a determined one or more characteristics of the flow; andtransferring electrical power from the turbine system to a location on the ground. 27. The method of claim 26, wherein linking the turbine system to a fixed location relative to ground comprises tethering the turbine system to the fixed location relative to the ground. 28. The method of claim 26, further comprising controlling a position or orientation of at least one runner of the turbine system. 29. The method of claim 26, wherein generating electricity from flow of the water through or across at least a portion of a runner of the turbine system comprises controlling a position or orientation of at least one runner of the turbine system based on one or more characteristics of the flow.