Abstract: This invention consists mainly of a long sloped tunnel, a deep hydroelectric/geothermal power plant and hot rocks transforming water into steam. Advanced tunnelling machines are able to reach lengths and depths never possible before with the old drilling method. The drop height of the water for the hydroelectric power plan is for instance over 10 km and the gained water pressure over 1000 bar feeding special high pressure water turbines or big hydraulic water motors driving again generators. After passing the water turbines the water is pressed with a rest pressure of about 250 bar into hot rocks generating high pressure overheated steam for steam turbines in a range of gig watts. Then the steam rises up in the sloped tunnel as in a chimney, cools down, condensate to water and starts the entire process again.

Abstract: This invention consists mainly of a long sloped tunnel, a deep hydroelectric/geothermal power plant and hot rocks transforming water into steam. Advanced tunnelling machines are able to reach lengths and depths never possible before with the old drilling method. The drop height of the water for the hydroelectric power plan is for instance over 10 km and the gained water pressure over 1000 bar feeding special high pressure water turbines or big hydraulic water motors driving again generators. After passing the water turbines the water is pressed with a rest pressure of about 250 bar into hot rocks generating high pressure overheated steam for steam turbines in a range of gig watts. Then the steam rises up in the sloped tunnel as in a chimney, cools down, condensate to water and starts the entire process again. That's all. This circulation for generating electrical energy deep under ground is sustainable, even during an ice age with a minimum of human intervention.

Abstract: This rotary linear generator comprises of one rigid part making a linear reciprocating movement superimposed by a rotational movement around the center axis—in short: a “rotating stroke motion”. Linear generators will be improved by adding a rotational motion to the reciprocating motion. This can be achieved by mechanical bearings, slanted magnetic bearings or by adding a conventional electric motor or by a combination of them. The benefits are twofold; as driving engines may now utilised simple environmental friendly two stroke engines with rotating pistons, secondly conventional rotating generators may also be used for generating electrical energy. Even at a desired low sliding speed of the pistons the desired high speed between the two interacting magnetic fields can be high depending on the diameter of the rotating part of the generator. Several versions of this idea are shown.