PlusEnergy is a coined concept developed by Rolf Disch that indicates a structure s extreme energy efficiency so that it holds a positive energy balance, actually producing more energy than it uses. With the completion of his private residence, the Heliotrope, in 1994, Disch had created the first PlusEnergy house in the world. The sheer logic of a home that creates more energy than it consumes made perfect sense to Disch. His next goal for its development was the mass application of the concept to residential, commercial and retail space.