Guess Who Lives Here

"The passive-solar house is positioned to absorb winter sunlight, warming the interior walkways and walls of the residence. Geothermal heat pumps circulate water through pipes buried 300 feet (100 m) deep in the ground. A 40,000 US gallon (151 m³) underground cistern collects rainwater gathered from roof urns; wastewater from sinks, toilets, and showers cascades into underground purifying tanks and is also funneled into the cistern. The water from the cistern is then used to irrigate the landscaping around the four-bedroom home."

I'll give you a hint. It isn't Al Gore.