 Assuming a level of efficiency of realistic 4%, calculations show that the amount of energy generated with one cubic meter water at a temperature of in a place with an air temperature of equals the amount of energy generated by letting this cubic meter water run through a hydroelectric plant of 4000 feet (1,200 m) height.Barjot Polar Power Plants could be located on islands in the polar region or designed as swimming barges or platforms attached to the ice cap.The weather station Myggbuka at Greenlands east coast for example, which is only 2,100 km away from Glasgow, detects monthly mean temperatures below during 6 winter months in the year.