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Sonnenschiff: Solar City Produces 4X the Energy it Consumes
Posted By
Andrew Michler
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Architecture,Environment,Solar |
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The project started out as a vision for an entire community — the medium-density project balances size, accessibility, green space, and solar exposure. In all, 52 homes make up a neighborhood anchored to Sonnenschiff, a mixed-use residential and commercial building that emphasizes livability with a minimal footprint. Advanced technologies like phase-change materials and vacuum insulation significantly boost the thermal performance of the building’s wall system.
The homes are designed to the Passivhaus standard and have great access to passive solar heating and daylight. Each home features a very simple shed roof with deep overhangs that allows winter sun in while shading the building from the summer sun. The penthouses on top of the Sonnenschiff have access to rooftop gardens that make full use of the site’s solar resources. The rooftops feature rainwater recycling systems that irrigate the gardens and while supplying the toilets with greywater. The buildings also make use of wood chip boilers for heat in the winter, further decreasing their environmental footprint.
The project’s simple envelope design is brightened by a colorful and dynamic façade. Gardens and paths cross through the development as well, linking the inhabitants. Offices and stores expand the livability of the community while contributing a sense of communal purpose.
+ Sonnenschiff
+ Rolf Disch Solar Architecture
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Although net-zero projects have been creating a lot of buzz lately in the field of green building, the Sonnenschiff solar city in Freiburg, Germany is very much net positive. The self-sustaining city accomplishes this feat through smart solar design and lots and lots of photovoltaic panels pointed in the right direction. It seems like a simple strategy — but designers often incorporate solar installations as an afterthought, or worse, as a label. Designed by Rolf Disch, the Sonnenschiff (Solar Ship)…
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The homes are designed to the Passivhaus standard and have great access to passive solar heating and daylight. Each home features a very simple shed roof with deep overhangs that allows winter sun in while shading the building from the summer sun.
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The project started out as a vision for an entire community — the medium-density project balances size, accessibility, green space, and solar exposure. In all, 52 homes make up a neighborhood anchored to Sonnenschiff, a mixed-use residential and that a
[4]
The penthouses on top of the Sonnenschiff have access to rooftop gardens that make full use of all available solar resources. The rooftops feature a rainwater recycling system that irrigates the gardens and supplies the toilets with greywater.
[5]
The project also makes use of a woodchip boiler for heat in the winter, further decreasing its environmental footprint. Advanced technologies like phase-change materials and vacuum insulation significantly boost the thermal performance of the buildings’ wall systems.
[6]
The project’s simple envelope design is brightened by a colorful and dynamic façade. Gardens and paths cross through the development as well, linking the inhabitants. Offices and stores expand the livability of the community while contributing a sense
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photo by Lauren Keith
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The project’s interior spaces have a lot of natural light (note the lights are not on in this office).
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Triple-pane windows allow for a lot of glazing without the heat loss penalty.
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Smart orientation was a key strategy used to maximize energy efficiency. The buildings are separated so as to provide sufficient light to the lower floors in the winter months.
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The home’s feature a simple passive heating and cooling strategy.
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