According to this article, that is the sign infront of Mike Strizki, a 50-year old director of residential and commerical systems for Advanced Solar Products, house. This is how the house was described:

Mike Strizki's house, the house of the future, the revolutionary house that might very well change our lives forever, is an unremarkable two-story, 3,000-square-foot, white colonial-style kit home in front of which, one rainy day last November, were parked no fewer than seven trucks and cars, a pair of Jet Skis, a speedboat on a trailer, several golf carts, a small tractor, a couple of vans and an old Dump truck rusting in the middle of the woods, like a major reworking of a Robert Frost poem. There was nothing odd or futuristic or exotically "eco" about the house - no solar panels to be seen, no giant arrays of thermopane windows passively drinking up light and heat; yet here, I'd been told, in the Sourland Mountains in New Jersey, an hour from Manhattan, was a house that had the potential - maybe within 5 to 10 years - to help turn millions of homes into fully self-sustaining power plants, each one capable of producing hydrogen to fuel cars as well.

I cant find a picture but from the description alone, it sounds very much in line with what I had in mind.