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Directory: Kender Solar Inc

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Image:Kender engine team 200.jpg

Kender Solar Inc. has developed a brand new solar technology, capable of producing 20 times more energy than a traditional solar panel. This performance is achieved by having the energy of the sun create a spinning motion of helium gas in a closed circuit. This spinning motion runs a turbine, which in turn generates power in a 100% clean and renewable process. This solar system achieves much higher performances, due to its ability to capture both the sun's light and thermal energy.


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Official Website

Presentation - 36-page PDF.

How it Works

Image:Kender engine process 200.jpg
Image:Kender engine master cylinder 200.jpg


The stored helium weighs 25 grams approximately. Helium can also be replaced by hydrogen (H2).

The full helium cycle runs in 0.22 seconds.

The main 50cc turbine runs at 3'000 rounds per min.

The system produces 39 kW of power (47 kW by the turbine, less 8 kW for the compressor). That is equivalent to 53 horse power, or enough energy to supply energy for 12 homes.

Its functioning is similar to a heat pump or a Sterling engine.

:"Helium (He) is stored in a small tank at 200 atmospheres and runs in a closed circuit. The helium is released out and spins the main turbine, such as in a classical compressed air engine, and generates electricity.

:Helium, subsequently, drops from 200 atm to 20 atm and its temperature drops from 20 C° (69 °F) to minus 240 C° (minus 400°F). This temperature drop is a consequence of the law of perfect gases (Pressure Volume = N r Temperature), where the temperature drop is proportional to its pressure drop.

:A compressor pushes the low pressure and low temperature helium into the solar panel. This compressor consumes energy for creating this continuous gas flow and maintaining the low pressure before it.

:In the heat exchanger, the helium moves from its very low temperature back up to 20 C° (69 °F) by heating due to the temperature of the air surrounding the solar panel.

:As the helium moves back up in temperature from -240 C° to 20 C°, its pressure builds back up to 200 atmospheres. This is again the application of the law of perfect gases (Pressure Volume = N r Temperature). The surrounding air, obviously, will drop in temperature, as it transfers its thermal energy to the helium.

:The helium has run a full circle in the closed circuit, back into its initial position at its original temperature and pressure. This full circle allows the main gas turbine to receive a continuous flow of helium and to spin as long as the compressor keeps the helium in motion.

:The main property of the Kender engine is that the energy produced by the main turbine is 5 to 6 times higher than the energy needed for the compressor to generate and maintain the gas flow. This difference in energy is provided by the air temperature differential heating the helium. In summary, the Kender Engine runs on cold air, by using efficiently its thermal energy."



(4.04 Minutes)

New Powerful Solar Technology based upon a Helium closed-circuit Description. (YouTube February 18, 2009)

- - - -


Kender can proudly announce an installed cost of US$ 0.70 per Watt and a production cost of US$ 0.07 per kWh.


Takes solar and goes 24/7.

The Kender engine requires no consumables or fuels of any kind to operate.

It emits no CO2 or any other emissions, only cold air.

It is not dependant on weather conditions.

It is operational from temperatures of minus 70°c (minus 100°F) to 100°C (210°F).

The Kender engine is very silent.


Residential & Office Buildings


Data Centers

Independent Energy Production

Independent Testing




Company: Kender Energy Inc.


Sean Kelly, CEO

A development phase company active in the field of solar energy. Its present prototypes of solar panels engine are being developed into a full-scale solar energy production system. The particularity of the Kender solar panel system and technology is to allow, via a closed circuit of gas (usually helium), to create a heat exchange with the sun and the air from the environment. The exchange generates the spinning of the helium gas in the closed circuit, propelling a turbine, which produces electricity in a 100% clean and renewable process. The system's main advantages are that it is efficient, cheap in production, and modular. The company is based near Geneva, Switzerland.

Stock Symbol


Inventor: Jean Cousin

The origin of the name "Kender" comes form its inventor, Mr. Jean Cousin. Mr. Jean Cousin is a french born engineer, whose origin and birthplace go back to Bretagne (Brittany), France. In Breton language, "cousin" translates into "kenderv", which gave its name to the engine. Such engine is the fruit of several years of work in the field of "autonomous engines", capturing energy from the temperature of surrounding elements (water, air, sodium and so forth). Mr. Jean Cousin registered a patent for this engine in March 2007.


In the News

Google News

Kender Energy Inc. Opens Door to New Generation of Solar Panels - The company has developed a new solar technology, where the thermal and light's energy of the sun are used together to spin helium in a closed circuit. (GlobeNewswire Feb. 26, 2009)


See Talk:Directory: Kender Solar Inc

Talk:Directory: Kender Solar Inc - Several NEC comments regarding this technology and its feasibility.


Kender Engine


Contact Form

Kender Solar (Switzerland):

Operational Headquarters

36 bvd Helvétique

CH-1207, Geneva


Tel: +41 22 700 76 48

Fax: +41 22 700 73 62

Kender Energy Ltd UK

c/o UKBF, Office 2, 16 New Street

Stourport-on-Severn, Worcestershire

DY13 8UW, United Kingdom:

E-Mail: [mailto:{address}? {address}]

See also


Directory:Solar - index of resources

There was an error working with the wiki: Code[1] | News:2009:Solar | News:2006-2008:Solar

PowerPedia:Solar Energy - Encyclopedic review of history and future

Directory:Solar Energy Research and Development


Directory:Solar Problems


Directory:Concentrated Solar Power

Directory:Solar Infrared Harvesting

Directory:Solar PhotoVoltaics

Directory:Home Generation:Solar PV

Directory:Photovoltaic Research and Development

Directory:Solar Thermal

Directory:Home Generation:Solar Heating

Directory:Thin Film Solar

Directory:Solar:Photosynthesis Imitation

Directory:Solar Paint

Directory:Dye Solar Cells

Directory:Solar Tower

Directory:Floating Solar Chimney

Directory:Space Based Solar Power

Directory:Solar Sails

Directory:Solar Windows


Directory:Plastic Solar Cells

Directory:Silicon - more efficient uses, alternatives, methods

Directory:Black Silicon

Directory:Synchronous Solar Heliostat

Directory:Solar:Installation and Consultation



Directory:Solar Applications



Directory:Solar Hydrogen

Directory:Walipini Underground Greenhouses

OS:Solar Ethanol - distiller design

Directory:Energy from Roadways

Directory:Solar Pavement - black-body absorption of the asphalt

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