The all-electric building gets its electricity from rooftop solar panels, but its heat and cooling are powered by geothermal pipes, which are dug deep into the ground, to take advantage of relatively mild year-round temperatures of about 50 to 60 degrees Fahrenheit. The building, which does not have batteries to store energy, produces excess power during the day, when the sun is out, and pulls electricity from the grid at other times. Excess energy from the panels is used by the adjacent park.
