Today, buildings account for 40 percent of global energy consumption. Transforming buildings from energy guzzlers into producers of renewable energy is a big step in the right direction. Constructing buildings with very high environmental qualities is definitively a justifiable and rational investment, both short term and long term.
By building a Powerhouse, you help commercialise energy producing buildings. Operative buildings that produce the same or a greater amount of energy than they consume will be an important contribution to reducing global energy consumption, and consequently also greenhouse gas emissions.