Russ Finch

Utilizes the stable temperature of the earth to heat or cool buildings and melt snow.

A greenhouse design where the floor is dug four feet below ground surface and the roof is slanted toward the sun to maximize light and heat capture.

Nebraska

Canada

One of Finch's geothermal greenhouses located in Alliance, Nebraska, used by students to grow vegetables for school lunches.

A year-round geothermal-powered greenhouse using pit greenhouse (Walpini) design with underground geothermal heating. The greenhouse floor is dug four feet below ground, and geothermal heat from eight feet underground (52°F) is circulated via perforated plastic tubing to maintain growing conditions.

A commercialized pit greenhouse design powered by geothermal energy, capable of year-round operation. The design has been replicated in 17 locations across the United States and Canada.