Benedictine Women in U.S. win award for greenest new building in Wisconsin Monastery features geothermal heating , photovoltaic lights , specially designed windows . Building is projected to save 99.75 percent on energy costs alone . Hoffman says the geothermal wells work so efficiently that on some days , the monastery actually sells energy to the utility , instead of buying it . Paul Hoffman LLC designed and built monastery at a cost of 246 .
Benedictine Women in U.S. win award for greenest new building in Wisconsin Monastery features geothermal heating , photovoltaic lights , specially designed windows . Building is projected to save 99.75 percent on energy costs alone . Paul Hoffman LLC designed and built monastery at a cost of 246 .