About SunOyster Systems
SunOyster Systems GmbH (SOS) has its headquarter in Halstenbek near Hamburg and a subsidiary in Berlin, Germany. The company was founded in 2011 and concentrates on developing, producing and licensing the concentrating solar technology SunOyster. SunOyster Systems has applied for three international patents for the company’s main innovations.


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Powernews aus Norddeutschland - STARTKLAR

This is what the "SunOyster 16 pvplus" looks like!

The SunOyster 16 pvplus is a concentrating solar collector that produces both electricity and high grade heat from the one unit, combined with PV modules.
Its 16 square meters of parabolic mirror track the sun, and concentrate the sun’s energy on a receiver tube, achieving a total energy efficiency of up to 75%; in addition, it carries 12 standard photovoltaic (PV) modules to use the space most efficiently.



„SOcool“ plays in the Champions League of innovative SMEs


SunOyster Systems (SOS), manufacturer of the concentrating solar technology SunOyster for combined heat & power, succeeds under the EU SME instrument


SunOyster Systems GmbH (SOS), developer of the CPVT technology SunOyster for the simultaneous generation of power and heat, qualified with its project “SunOyster cooling – SOcool” under the renowned SME instrument of the European Union and will receive over a period of two years a substantial grant.


The SME instrument was introduced under the framework research program HORIZON 2020. It supports small and medium enterprises to bring their innovative products from at least Technology Readiness Level TRL 6 (prototype) to a complete and qualified product (TRL 8). During the first phase –which SOS completed in February 2017 – the instrument promotes a feasibility study with a grantof 50,000 Euro. The second phase for implementation of the business plan is with a 70 per centsubsidy and a grant amount of up to 2.5 million Euro so attractive that the success rate of Germancompanies is normally only 3 to 5%. The instrument is therefore also referred to as „ChampionsLeague“ of innovative SMEs. During the call of 6 April 2017 there were among totally hundreds ofapplications only two German companies successful – interestingly both of them in the segmentenergy transition. The application of SOS was accompanied by the Hamburg office of EurA AG.

After conclusion of the necessary grant agreement, SOS will work for a project period of two years on bringing combinations of the SunOyster with thermal chillers of different sizes and manufacturers to the market. The idea is to use especially the generated heat of up to 7.5 kW thermal power and at a maximum temperature of 170°C for generating cold. The heat has to be used locally, and in sunny and hot countries people need often more cold than heat. The co-generated SunOyster electricity of up to 5 kW can be used for other purposes – or for additional cooling with the help of conventional electric chillers (e.g. split air-conditioners).


Before this background, SOS wants to bring the following attractive product packages consisting of SunOysters, the optimal chillers and the other system components on the market:

Hotels have a permanent high demand for heat and cold. Here, we can use the „waste heat“ from the thermal chillers – which is normally rejected in cooling towers – for pre-heating thesanitary warm water or for heating the pool. In this „tri-generation“ the magic SunOyster generates together already with a single stage chiller out of 15 kW direct radiation of the sun a power output of 5 kW electric power, 5 kW cold and 12.5 kW usable heat. The altogether 22.5 kW of useful energy represent a total efficiency of 150 %!


Offices in hot countries typically need the cooling at times when the sun is shining which enhances the economic viability. Here – just as in the other two applications – SOS expects for its customers using an investment loan a payback time of only one to two years.


Task of SOcool Pool is the complete energy supply of villas with a pool with electricity, heat and cold. In some sunny markets such as the US and Australia most of the solar thermal systems installed serve already today as pool heaters. The SunOyster and the tri-generation in solar cooling can lift this to a totally new level. Looking at the same roof surface, the SunOyster can produce a multiple of the useful energy of a Tesla’s solar shindles.


Founder Carsten Corino declares: “We are very happy that our four years of development efforts on the SunOyster are acknowledged. As our solar co-generation makes the heat a cheap by-product of electricity, we want to reach a breakthrough for the thermal version of solar cooling.”


More Information and photos:


Link to the EU SME program:


SunOyster succeeds under the EU SME instrument
Press Declaration SunOyster Systems EU S[...]
PDF-Dokument [1.9 MB]
Erfolgreich im Forschungsrahmenprogramm HORIZON 2020
„SOcool“ spielt in der Champions League des Mittelstands, KMU-Instrument der EU
Pressemitteilung SME-Förderung 170523.p[...]
PDF-Dokument [916.0 KB]


August 5th, 2016

“SunOyster Crystal” helps solar technology reach 30% electric efficiency


The new SunOyster lens paves way for receiver with 75% total energy efficiency in co-generation of power and heat


Hamburg, 5 August 2016. SunOyster Systems GmbH (SOS), the Hamburg-based manufacturer of the concentrating solar technology SunOyster for the co-generation of power and heat, reaches a technical milestone in their R&D project of developing its concentrator cell receiver. “We are very happy that thanks to this new lens – the “SunOyster Crystal” – we are getting much closer to our target of supplying in sunny areas the cheapest form of solar energy wherever heat or cold is needed” says General Manager Dr. Carsten Corino.
The receiver is the heart of the SunOyster. After the parabolic mirrors have concentrated the direct sun light 30 to 40 times onto the receiver, the receiver concentrates it a second time and transforms it into electricity and heat. In order to reach this target, a glass lens in the receiver is concentrating the sun light 16 times onto the highly efficient concentrator cells. The secondary concentration is needed to make full use of the precious concentrator cells which were originally developed for space applications. These multi-junction cells consist of three serially connected layers of semiconductor material, and each of them is converting a different part of the solar spectrum into electricity. At the same time, heat is generated and collected by a fluid circulating through the receiver. The development of the SunOyster receiver, for which patents are pending in Europe, US, India and China, is supported by the German Foundation of the Environment.

The new SunOyster Crystal allows not only an electric efficiency of 30%. A very important property of the lens is also its high tolerance regarding positioning and tracking errors.


“Although we are able to track in the millimeter range, it is of course much easier over the life-time of 20 years to reach the receiver position with a tolerance of roughly a centimeter, and also cheaper” explains SOS’ head of workshop Stephan Ulrich.


The new lens reaches a geometrical concentration of 530x. Taking into consideration the optical efficiency of approx. 75%, the optical concentration is a good 400x. The design of the lens was supported by Dr. Ralf Leutz, founder of Leutz Optics and Illumination. The prototype of the lens with a shape of a mountain crystal was cut and polished in the Bavarian Forest – where natural mountain crystals (also named “German diamond” by mineralogists) are found. Bigger numbers of the lens will be pressed from molten glass to reach low unit costs. One SunOyster receiver will contain more than 60 SunOyster Crystals and a corresponding number of cell assemblies. The two receivers of one SunOyster shall have a power output of almost 5 kW electrical plus 7.5 kW thermal.

SOS is presently selecting worldwide demonstration projects for the pre-series of its solar CHP technology, e.g. in the fields of process heat, solar cooling or swimming pools. The company has orders for a dozen machines in particular from Chile, Egypt and India, and further machines are under negotiation. SunOyster Systems is moreover organizing a Series B financing round.


More informations and pictures:


Sun Oyster Crystal
The new SunOyster lens paves way for receiver with 75% total energy efficiency in co-generation of power and heat
Press Declaration SunOyster reaches 30% [...]
PDF-Dokument [414.1 KB]

SunOyster Systems GmbH

Poststraße 46
25469 Halstenbek



Phone +49 4101 80 87 67

GM Dr. Carsten Corino

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