What’s one way to ensure the sun always shines on your photovoltaic array? Act like a planet, or at least look like one. This extreme home’s round design allows the solar equipment to rotate with the sun, alleviating the need to combat solar gain. Named the Gemini Haus and designed by Roland Mösl, the residence combines innovative solar technology and an eye-catching aesthetic.

The innovative residential solar application was devised by Roland Mösl who detailed the concept in the 1992 book Aufstieg zum Solarzeitalter (Advance to the solar age). The idea received attention in 1993 when Mösl won a prize at the prestigious World Exhibition of Innovation, Research and New Technologies at Brussels Expo.

The concept of Mösl’s turning solar home took form in the cylindrical Gemini Haus prototype in 2001 as part of the Styria County Energy Exhibition in Weiz, Austria. Equipped with 150 square meters of turning photovoltaic panels that follow the sun, extreme thermal insulation, efficient design and a heat recovery system, the Gemini Haus is a one-of-a-kind solar experience that creates an energy surplus.

The unique, streamlined design and energy efficient systems are complemented by integrated furniture that creates a clean, modern interior. During the energy exhibition, the living space served as lecture hall and backdrop for guided tours that showcased the home’s innovative energy strategy.

In the Gemini Haus, minimalist design meets luxury living. Included in the concept are elements like a whirlpool bath and central vacuum that makes living around the sun even more of an adventure.

Roland Mösl is the founder of Planetary Engineering Group Earth (PEGE), in Salzburg, Austria, where he dedicates his time to inventing, discovering and advocating innovative ideas that help society “advance to the solar age.”


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  1. j February 19, 2008 at 9:55 pm

    Sorry, but Bernard Shaw (the playwright) beat all of you to it, with his writing hut built in the 1900’s.

  2. THOMAS GATHMAN September 16, 2007 at 1:58 am


  3. It’s a b5media &#... August 16, 2007 at 10:00 am

    […] 6. I dig green building, have a Master’s Certificate in Sustainable Design from Boston Architectural College and write about it at Inhabitat. […]

  4. lving August 12, 2007 at 12:00 am

    Wonderful! I

  5. Michaelangelo August 3, 2007 at 5:32 pm

    Interesting idea carried through -I designed a rotating bubble house with interior gardens that completely rotated when I was at school at 17 – that was in 1961. My question would be – is the energy/materials required to construct the mobile solar array structure less than simply having more solar cells on different parts of the building?

  6. velorna August 2, 2007 at 9:52 pm

    sounds cool, looks cool… must be cool

  7. Jeanne August 2, 2007 at 2:00 pm

    Looks like living inside a battery.

  8. Pierre August 2, 2007 at 9:14 am

    There is something really strange …. Why do they choose to locate the house below the shadow of a tree?

    On the three pictures the house is in the shadow….

  9. Extreme Solar Power Gem... August 1, 2007 at 7:15 pm

    […] a heat recovery system. It’s so efficient in fact, it inevitably creates an energy surplus. Inhabitat goes as far to claim that the home design is a combination of minimalism and luxury living. Some […]

  10. HEN August 1, 2007 at 4:03 am

    well…… maybe it is really innovative, but not so good looking

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