WaveReaper Ocean Wave Power

Waves work in a constant circular movement up and down,  back and forth and we can now with a WaveReaper, a simple mechanical device take advantage of this in a affordable way.

The WaveReaper Technology, invented 2006, released for public use 2008, by Stefan Nyström


As I said, the waves move up and down, but most generators, rotate around an axle, and the wave size varies a lot, and creates problems, when you want to utilize the energy content of them. The current technologies regarding wave energy today, is very costly, which brings that it just can’t compete with other ways of making energy.

Another factor, water, and generators, yes almost any technology, is having problems, when it comes to the oceans salt water without using more expensive design and material.



Also water-depth, and the special environment, which can crave divers, and other expensive equipment, has made wave energy very costly. Maintenance of underwater electrical and mechanical gear is a nightmare, which have been shown in other projects with wave energy, as bankruptcy ensues after the staggering machining, transportation, deployment and servicing cost erases all chances for profit, and digs holes in the balance sheet.

WaveReaper Circuminvent.com


WaveReaper Circuminvent.com

That is the main components, in what up to day, is the cheapest wave energy technology in the world. It can even be built in wood or by choice bicycle parts! Latest conclusion, is to make almost all of the parts for the WaveReaper in concrete, Base , pulleys, and flywheel.  See video. This is very good, in countries which have limited access to expensive metals, and heavy machining tools.

Wavereaper Circuminvent.com

WaveReaper plastic barrels in the waves.

A set of plastic barrels is used as boys, cost is low, and PVC isn’t affected by salty ocean water. The barrels are placed near shore or longer out in deeper water, depending on amount of energy needed in particular wave plant.

Wavereaper Circuminvent.com

Counterweights mounted on a sleigh in a pipe.

Each barrel has a lifting force of approx 200 Kg. A wire is connected to the barrel, which goes to a brass block on the bottom, which is weighted down, with a big stone, and connected to another wire. The location of choice is the main parameter for the size of the barrels, smaller waves, smaller barrels, and vice verse. Wave heights can be caught in  range from 2 foot and up.


The number of barrels, can be larger, but i think, for practical reasons, a number of 100 on each plant, would be good, and reasonable, this amount, can in the shore line version, give up to 500 kW of energy, or even more if special locations, and in a plant that covers 100 meter of shoreline, that makes it, 3 MW per kilometer shoreline.

Wavereaper Circuminvent.com

The barrels is on 2 meters distance from each other, and connected to the on mainland placed WaveReaper generator, via the “power transmitting wire” it is also is connected with a thinner wire, between them, so, if the power wire should break, the barrels, don’t get to drift away, in the sea. This will also even out the possibility that the barrels, would smash into each other, when the sea is rougher.

Wavereaper Circuminvent.com

Prototype on a trailer.


Wavereaper Circuminvent.com

Power out put of waves kW per meter of WaveReaper, approx 30% energy after conversion.

Trey Ratcliff - Hawaii - Pilot - Fishing in Oahu-X2

Example, number of barrels in each row 10, and rows 10, the plant would be 20 x 20 meters of area, 400m2, and will have 100 connected wires, which transfer the mechanical energy, to the generator. This type of plants, give 100 to 300 kW every hour, which generates profits, of 6500 to 20 000 dollars of revenue monthly, building cost of the plant is estimated to 20 000 dollars only. This give that the WaveReaper earns itself, in a few months, instead of years.

Wavereaper Circuminvent.com

WaveReaper on a small boat.



Kw/h per meter distance in sea.

We can here see energy content in waves, The numbers means kW per hour, and meters of wave. South America, 97 kW per meter of wave, for example, that means, a WaveReaper device, which is 100 meters broad, would generate 9.7 MW, cost would be around 1200 000 Dollar, for that device. However, the revenue would be over 400 000 dollars monthly with current energy price.

Wavereaper Circuminvent.com

Offshore WaveReaper Floating device

Wavereaper Circuminvent.com

Wavereaper Circuminvent.com

This is a simple schematic, showing buoys, wire and one-way bearing, connected together. In case of storm and rough waves, it is a problem, for all wave energy constructions, however, the WaveReaper,  has a built in safety feature in its construction, that would avoid damage on the equipment, its due to the max lifting force of the barrels, since the will sink under the surface, if the force is to great. this will make the WaveReaper possible to work in any weather, however it should be constructed, to take advantage, of the medium wave, that is present at all time, for best cost benefit of the plant.

Wavereaper Circuminvent.com


Also plastic can be used as Pvc band, which today is commonly used for packaging goods on pallets, this type of PVC band has high strength, and is also light, and cost-effective, of course the UV light from the sun is affecting it in the long run, but the part that is in the water, should be somewhat guarded from the UV rays.

WaveReaper Circuminvent.com

Flywheels is also mounted on the axle, to collect, even out/store the momentum which is produced by the lifting barrel, this will even out and, smooth the turning’s of the axle, to the generator, which is driven by a pulley, who will give it correct rpm. A simple water brake which can never wear down, is recently released, watch the provided YouTube video for further explanation.

Wavereaper pipes Circuminvent.com



First WaveReaper prototype.

WaveReaper 15cm wave height test Stockholm Sweden.


WaveReaper Circuminvent.com


WaveReaper Circuminvent.com

Benefits of the One-way bearing.

The barrels will of course jump up and down in random patterns; this will add to an even movement of the generator axle, and its flywheel, as soon as a wave has energy to contribute, it will transmit its force to the wire, and to the axle. The flywheel is storing the momentum gained from the waves temporarily.

WaveReaper Circuminvent.com

Because of its design, the WaveReaper, is always self adjusting regarding wave height, and tidal shifts, and higher or lower water levels due to shifting weather patterns, no adjustment needed, the WaveReaper is always balancing itself out, to optimal level in the ocean.

No computer monitoring is needed and that also brings costs down, and no complicated technology, which would need delicate conditions, or a lot of service. This technology, offered globally for free,  Anyone can now build his very own, generator.

Wavereaper Circuminvent.com

Current development is to make the WaveReaper in concrete, for minimal cost, its seems possible to make a 3kw device for under 700 Us $ This project has sadly been sleeping for some years, but plans is to make it going very soon.

WaveReaper Circuminvent.com


Prototype in Chile

Translate »