Energy Positive House to Supply Power to Grid in Sweden  

Posted by Big Gav in ,

Green Building of the week from Inhabitat is this energy-positive house in Sweden - Energy Positive House to Supply Power to Grid in Sweden.

Karin Adalberth, a doctor of building physics, partnered with local green utility company E. ON when she designed the plans for Villa Akarp, which is being built outside the Swedish city of Malmo. Together, the two worked out a plan where the residence would purchase energy from the utility during Sweden’s dark winter months and sell electricity back to the grid during sunny summer months. If calculations are correct, the house will sell back about 4,000 kilowatt-hours of electricity annually while only purchasing 2,600 kilowatt-hours, creating a positive net energy ratio.

To achieve such lofty green goals, designers plan to implement a ton of energy efficient technologies into Villa Akarp. For one, wool fiber insulation 5.5 decimeters thick will line the home’s walls–compared to a home with insulation one decimeter thick, the extra lining would save the average family about 75 percent in energy costs. Foam insulation will line the building’s foundation, and triple-glazed windows will prevent air from escaping while also letting in lots of natural light. In terms of heat and hot water, the home will use a combination of Passiv Haus heating concepts (using energy already being generated by appliances and other household items to warm the interior), a solar thermal system, and traditional radiators. During the sunny months, 32 square meters of solar panels will produce power.

1 comments

I wonder about some of the design aspects of the house shown.

Garage is on the south. That's the best place for heat gain windows. Seems that the greenhouse should be on the south side rather than on the west.

Also placing the garage there is going to lead to snow buildup which will block the solar panels. Better to have an area for snow to slide away.

A better placement for the garage might be on the north where it could provide extra buffering.

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