A method assembles a wind turbine in a non-vertical orientation. The turbine has a nested wind tower with a plurality of tower sections, including a first inner tower section radially inward of an outer tower section. Each of the tower sections has a wall with an inner surface and an outer surface. The first inner tower section has a connection interface at or near its bottom end, and the outer tower section has a counterpart connection interface at or near its top end. The tower has a friction reduction member configured to reduce friction between the first inner tower section and the outer tower section as the first inner tower section is extracted in a non-vertical orientation. The first inner tower section is extracted in a telescoping manner until the connection interface contacts the counterpart connection interface. The method also secures the connection interface and the counterpart connection interface together.

A solid mast raiser system is disclosed herein. The solid mast raiser system may include a slot configured to house a mast. Further, the slot may be further configured to be inserted in to a predrilled bore in the ground. Further, a length of the slot may be matched to a depth of the predrilled bore in the ground. Further, the solid mast raiser system may include a stanchion configured to be attached to the slot. Further, the stanchion may be concentrically aligned with the slot. Further, the stanchion may rest upon a cable. Further, the solid mast raiser system may include a launcher coupled to the stanchion through a cable. Further, the launcher may be configured to raise and retract the stanchion. Further, the launcher may be configured to be affixed to the ground. Further, the launcher may comprise a first hole concentrically aligned with the slot.

A turbine system that harnesses energy from natural atmospheric wind and water currents for power generation and storage in a power storage mode, and in a reverse switched operation, sources current to the turbine system from storage power to function in a propulsion mode to propel an associated structure (e.g., boat, aircraft).

A wave energy converter is provided. The wave energy converter includes a paravane rotationally and pivotably coupled to a support structure, and operatively coupled to an energy collection device. A method of harvesting water wave energy is provided. The method includes positioning the paravane within water to be impacted by water waves, and transferring water wave energy from the paravane to the energy collection device.

A support tower, particularly for a wind turbine. The support tower has at least a first elongated component which is internally hollow and at least a second elongated component which is slidably coupled to the at least a first elongated component and movable relative to the at least a first elongated component at least between a retracted position. The second elongated component is at least partially inserted in the at least a first elongated component, and an extracted position, where the at least a second elongated component is substantially extracted from the at least a first elongated component. A moving device for moving the second elongated component from the retracted position to the extracted position, and vice versa, and a blocking device configured to allow the at least a second elongated component to be blocked in the extracted position, are also provided.

A method of building an offshore windmill includes, using a 3D-heave-compensated crane, placing on a windmill pedestal a lifting jack having a receiving region, and fixing the lifting jack to the windmill pedestal such that the lifting jack can be later removed, and such that a windmill column can be placed within the receiving region directly on the windmill pedestal. The windmill generator is installed using the 3D-heave-compensated crane. The windmill column is partially erected on the windmill pedestal using the 3D-heave-compensated crane and the lifting jack. Before the windmill is fully erected, windmill blades are placed on the windmill generator using the 3D-heave-compensated crane, and the erection of the windmill column on the windmill pedestal is completed using at least the lifting jack. Using the 3D-heave-compensated crane, the lifting jack is removed from the windmill pedestal.

A solid mast raiser system is disclosed herein. The solid mast raiser system may include a slot configured to house a mast. Further, the slot may be further configured to be inserted in to a predrilled bore in the ground. Further, a length of the slot may be matched to a depth of the predrilled bore in the ground. Further, the solid mast raiser system may include a stanchion configured to be attached to the slot. Further, the stanchion may be concentrically aligned with the slot. Further, the stanchion may rest upon a cable. Further, the solid mast raiser system may include a launcher coupled to the stanchion through a cable. Further, the launcher may be configured to raise and retract the stanchion. Further, the launcher may be configured to be affixed to the ground. Further, the launcher may comprise a first hole concentrically aligned with the slot.

Assembly process of a telescopic tower (100) including at least one prefabricated concrete section, comprising the following steps: providing sections (2,4,6,8,10) in an initial position wherein superimposed sections are disposed coaxially within a base section (10); providing assembly means (14,16,18); providing operator support means (20) on the external surface of said base section (10) essentially vertically in correspondence with the upper edge of said base section (10); lifting the innermost superimposed section (2,4,6,8) radially from those that are in the initial position forming a joint between the lower end portion of said superimposed section (2,4,6,8) which is being lifted and the upper end portion of the radially external and immediately adjacent section (4,6,8,10); providing in said joint anchoring devices for immobilizing at least provisionally the corresponding sections (2,4,6,8,10) between one another.

Methods and apparatus for a modular hydrokinetic turbine. An apparatus includes modular vertically floating units tethered to shore with a generator residing above a waterway and a plurality of vertically oriented blades submerged in the waterway to convert a latent kinetic energy of a moving waterway into electricity.

The invention relates to a system for converting the of swell and/or of wave energy, including a network of water compression columns (1), each having: a lower end (110) to be dipped into a volume of water, the lower end (110) having an opening (111) for collecting water in the column (1), so as to form a chamber including a gas in an upper portion (120) of the column (1), a first non-return valve (4) in fluid communication from said column (1) to an overpressure chamber (2) shared by the columns, and a second non-return valve (5) in fluid communication from a low-pressure chamber (3) shared by the columns to said column (1), wherein the overpressure (2) and low-pressure (3) chambers are fluidly connected via a turbine (6) and the columns (1) of the network are arranged contiguously, and the network extends in at least two non-parallel directions.