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Solar Greenhouse without glass insulation. Interior view of solar greenhouse with Hassel and Chestnut seedlings.

Badgersett Solar Greenhouse Amherst, Minnesota -- 1992 This project was designed by Roald and the client to grow hybrid seedling Hazelnut and Chestnut trees. It's super-insulated and earth-bermed, has an in-bed thermal air exchange system, and an off-grid power system run on photovoltaic solar power and wind. In the winter, automatic exterior insulated shutters designed by Roald close at night. In the daytime, these shutters provide additional reflected light to the inside from the bright sunlight reflected off the snow. It has operated without a furnace or back-up heating since construction. 16' x 108' = 1728 sq. ft.

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Roald Gundersen Natural Buildings and Living Systems E2890 Lorenz Road, Stoddard, WI 54658 (608) 452-3894      roaldgundersen -at- roaldgundersen.com.... ..or click here to send a message.