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.

A water current catcher system for hydroelectricity generation includes a first L-shaped weir, a second L-shaped weir, a channel opening, an underwater gate assembly, and at least one elevation adjustable hydroelectric generator unit. The first and second L-shaped weir are connected to a subsurface environment and linearly positioned to each other. The channel opening is delineated between the first L-shaped weir and the second L-shaped weir. The underwater gate assembly is integrated into the first L-shaped weir, the second L-shaped weir, and the subsurface environment thus positioning about the channel opening. The elevation adjustable hydroelectric generator unit that includes a first jack-up barge, a second jack-up barge, a waterwheel, and a generator is connected to the subsurface environment and adjacently positioned about the channel opening. The elevation adjustable hydroelectric generator unit is operatively coupled with the underwater gate assembly to convert the kinetic energy of flowing water into hydroelectricity.

Energy is harvesting from fluids with different densities, such as water (34) and air (38) with a rotor (12) that is selectively above and below a water surface (30). The rotor (12) has cavities (31,32) inside tubes (18) with apertures (24) in walls (22) of the tubes (18). In a submerged mode, with the rotor (12) in the water (34), air is trapped in tubes (18) on one side of the rotor (12), which has apertures (24) facing down and air is released from the tubes (18) on the opposite side of the rotor (12), which has apertures (24) facing up. The opposite happens in an elevated mode.

A wind power installation with a rotor which has two or more rotor blades and which is rotatably bearing-supported for rotation around a rotor rotation axis. The rotor is connected to a generator for generating electrical power. The rotor and the generator form a part of a turbine which is received by a turbine carrier. The turbine carrier is rotatably arranged at a supporting structure. The turbine is movably mounted in the turbine carrier via a bearing device so that the spatial position of the turbine in the turbine carrier can be modified. A pivoting range of the turbine corresponding to a pivoting range of the rotor rotation axis includes a first angle range and a second angle range relative to a reference plane, and the entire pivoting range is at least 120.

A continuous fluid flow power generator includes an electrical generator with submersible turbine blades in communication with a flow of fluid in a body of water to generate electricity. The generator may include a water tower and a hydro turbine generator to generate electricity through kinetic actions; a float and piston assembly activated by wave action to deliver water to the water tower; kick turbines to create water flow to the water tower through submersible pumps; and a rechargeable battery in communication with the electrical generator and the hydro turbine generator. The generator may also include solar assemblies and windmills to provide supplemental electricity generation for charging the rechargeable battery. The generator may be connectable to a battery bank aboard a vessel or to an electrical grid.

A tidal current generator relates to a tidal current generator that can efficiently generate power by separating an on-water power generation unit and an in-water power collection unit, that allows for easy management of facilities on the water because the facilities in the water can be easily pulled up on the water even if they break, that can maximally use the flow of tides using a connection rope and a groove formed on a rotary propeller, and that can maximize efficiency by controlling the number of power connections between a rotary unit and an on-water power generator in accordance with the states of the flow of tides to prevent waste or deficit of power transmission.

The present invention related to the ocean wave energy exploiting and storing device for electricity generation. The device consists of one hollow pillar (1), the pillar has a base to install the platform (3) and a slot for the hydraulic cylinder (2). The weight-loaded type accumulator (4) is installed within the pillar; two work platform (3) and (13) installed separately which work independently on each other. The first platform (3) covers the head of the pillar above the sea level and can move up and down. The level arm (6) is equipped with the hydraulic cylinder (9 via a swivel joint (10). There is a buoy (12) installed on the other end of the level arm. The second platform (13) is placed on the head of the pressing axle (5) above the first one (3).

The invention relates to a tower section and to a method for raising said section with a complete new or existing wind turbine on the upper part thereof, the assembly being raised to heights greater than 120 meters by means of a raising system that operates at ground level and gradually inserts modular frame structures through the lower part. The modules have heights between 10 and 14 meters and are formed by a trellis of at least three vertical columns and with diagonal elements which react to the twisting moments and shear forces generated by the action of the wind. A transition part with a base sufficient for raising in wind conditions greater than 15 meters/second is disposed on top of the modules. The raising method has several steps, for example: producing and installing a foundation; assembling the transition part on a connection element of a footing; mounting the wind turbine complete with the tubular tower, nacelle and rotor thereof; installing a lifting system and joining structures on a connection element of the footing; lifting a module N; assembling the different modules; and lastly assembling the final module and removing the automatic raising system.

A continuous fluid flow power generator includes an electrical generator with submersible turbine blades in communication with a flow of fluid in a body of water to generate electricity. The generator may include a water tower and a hydro turbine generator to generate electricity through kinetic actions; a float and piston assembly activated by wave action to deliver water to the water tower; kick turbines to create water flow to the water tower through submersible pumps; and a rechargeable battery in communication with the electrical generator and the hydro turbine generator. The generator may also include solar assemblies and windmills to provide supplemental electricity generation for charging the rechargeable battery. The generator may be connectable to a battery bank aboard a vessel or to an electrical grid.

A tower assembly having an adjustable height includes at least one base tower section having a cylindrical base wall defining an overall length extending from a first end to a second end. The cylindrical base wall defines an outer diameter that is uniform along the entire length. The tower assembly also includes an upper tower section arranged atop the base tower section. The upper tower section includes a first tower portion integral with a second tower portion. The first tower portion includes a first tower wall portion defining a first length extending from a first end to a second end and includes a tapering cross-section from the first end to the second end. The second tower portion includes a second tower wall portion defining a second length extending from a first end to a second end and defines a uniform cylindrical cross-section from the first end to the second end.