•Direction of the cap 3, towards the wind, is accomplished with flaps 44, and with non-equal distances between front and rear end of the cap 3 in favour to rear end, from longitudinal axes of the chimney 2. The inner space of the cap 3 must be spacious for accommodation of all Helium balloons 48 under the atmospheric pressure or small pressure of around 0.1 till to 0.5 MPa, while the cabin 46, must have enough space for the Helium bottles 53, under very big pressure of up to 500 Mpa, and room for the compressor 50, which is driven by the electric motor 51, powered by electric batteries 52. The cap 3, which has all above mentioned properties, is similar to an air ship which uses Helium to inflate the balloons 48 from high pressure bottles 53, and compressor 50, is used to compress Helium from the balloons 48 back to the high pressure bottles 53, and hence altering the caps altitude as needed. If the cap 3, is separated from the chimney 2, by releasing from the electromagnetic bearing 54, it can be moved around freely through the space as an air ship which has rudder with electromotor fans 55, for propulsion, powered by the batteries 52, and land anywhere, on its own wheels 56. The suction pipe 49, that passes through the cabin 46, and is its consisting part, has identical diameter as higher telescopic extension 34, and connects the chimney 2 outlet with air gap 40. The way that cap 3 operate is that the air stream from the chimney 2, through the suction pipe 49, figure: FIG 5, which is in the cabin 46, right to the air gap 40, between the layer 38 and/or 39 and thermo accumulating layer 41, which are separated with spacers 47, only to be released in the atmosphere through the cap 3, or via tiny holes 45 on outer layer 38, as shown on figure: FIG 10. The air from the air gap 40, can also exit out through additional openings 43, placed on leeward side, to help the air transition from the air gap 40, of the cap 3, figure: FIG 3. The air gets out of the air gap 40, sucked by low pressure around cap 3, which is present due to wind rapids flow over and around the cap 3, as an aerodynamic obstacle, but also because of the outer layer 38 with tiny holes 45, which is creating additional pressure drop on its surface. So in a fact, that low pressure area, marked on the pictures with ----------, formed by the wind flow around the cap 3, has role of a vacuum pump, vacuum is then transferred to the outlet of the chimneys narrow part 24, or to its extensions 33 and 34. In that way cap 3, makes additional suction to the place of connection with the chimney, and hence has amplifying effect to the chimneys power.