* Chu strongly promoted engineering solutions, explaining in April 2009, "We haven't taken full advantage of the technologies that exist today. They haven't been integrated into making smarter buildings that can be 60, 80 percent more energy-efficient than existing buildings."<ref>Zakaria (2009)</ref> | * Chu strongly promoted engineering solutions, explaining in April 2009, "We haven't taken full advantage of the technologies that exist today. They haven't been integrated into making smarter buildings that can be 60, 80 percent more energy-efficient than existing buildings."<ref>Zakaria (2009)</ref> |