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A hydroelectric dam is fluid powered, about 93% efficient, maybe your machines need upgrading, but probably not in the current era of cheap fuel.
Pumped storage allows peak demands to be met at much lower cost and also allows the elimination of obsolete plants as well as avoiding construction of new ones altogether.
Hydraulic motors approach manual transmission efficiency when they operate at below 1000 rpm, which coincidentally are right at wheel speed at 70 mph.
The ups trucks where the pump-motor drives the differential at prop shaft speed drop to 75% efficiency at highway speeds.
The next gen will drive the wheels directly, with 325 pounds feet of torque, per wheel, in a Mercedes Sprinter sized vehicle, with one motor per wheel.
Want to complain about the weight of the suspension? Mount the motors inboard with half shafts connecting them to the wheel-hub and dump the mass of your conventional friction (god help us all) brakes.
Or you can continue driving your direct global warming device.
Jesus, even electric cars still have friction brakes.
regards
mech
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