Gravity line power generation system including an overhead trolley mechanism to harvest kinetic energy from a wheeled vehicle moving down a slope

1. A power generation system, comprising:

an exit road for diverting a wheeled vehicle from a main road for vehicular traffic to a tether station;

a power generation path, connecting to the exit road at the tether station, the power generation path comprising a road having a downward grade;

an overhead trolley mechanism, comprising

(i) a tether cable configured to be releasably interconnected to the wheeled vehicle while the vehicle moves downwardly, due to weight of the vehicle, along the power generation path from a first position to a second position, the downward movement of the vehicle generating kinetic energy, and

(ii) a tether member connected to a moveable downhill line, wherein the tether cable interconnects the vehicle and the tether member, wherein the tether member is configured to pull the downhill line, as the vehicle moves downwardly from the first position to the second position, and thereby operate a gearing mechanism operatively connected to an electric generator to thereby convert the kinetic energy of the vehicle to electric power;

a releasable connecting mechanism, for releasably interconnecting the tether cable to the vehicle from the first position to the second position, and allowing disconnection of the vehicle from the tether cable at the second position; and

an entrance road for returning the wheeled vehicle, after disconnection from the tether cable, back to the main road.

2. The power generation system of claim 1 , wherein the overhead trolley mechanism further comprises a return line configured to return the tether member from the second position to the first position.

3. The power generation system of claim 2 , wherein the overhead trolley mechanism further comprises a plurality of towers, each tower comprising a support arm configured to support the downhill line and the return line.

4. A method for generating electrical power, comprising:

a) diverting a wheeled vehicle, from a main road for vehicular traffic, along an exit road to a tether station;

b) connecting a tether cable to the wheeled vehicle at the tether station, wherein the tether cable is interconnected to a tether member moveably disposed, via a moveable downhill line, on an overhead trolley mechanism and the downhill line is interconnected to an electric generator via a gearing mechanism;

c) allowing the wheeled vehicle to move downwardly, due to weight of the vehicle, along a power generation path from a first position at a starting point of the power generation path to a second position at an ending point of the power generation path, wherein the power generation path comprises a road having a downward grade;

d) as a result of the downward motion of the vehicle, pulling the tether member to thereby pull the downhill line to operate the electric generator and thereby generate the electrical power; and

e) disconnecting the tether cable from the wheeled vehicle at the second position at the ending point of the power generation path; and

f) returning the wheeled vehicle back to the main road via an entrance road.

5. The method of claim 4 , wherein the vehicle is in an unpowered or low-powered mode as the vehicle is moving downwardly along the power generation path.

6. The method of claim 4 , wherein the overhead trolley mechanism further comprises a return line configured to return the tether member from the second position to the first position.

7. The method of claim 4 , wherein the overhead trolley mechanism further comprises a plurality of towers, each tower having a support arm configured to support both the downhill line and a return line, wherein the return line is configured to return the tether member from the second position to the first position.