In a decade of working in sustainability, I’ve found that I usually face an uphill battle keeping the sustainable and energy-efficient features in building designs. Unless energy efficiency targets are mandated by law, the argument for sustainable features often comes down to doing the right thing for the planet and achieving a marketing advantage—both of which may be harder to justify for a commercial enterprise. But more recently, a strong business case has emerged for energy efficient features in these properties. Under the right conditions, a Net Zero or Net Positive (in which a building produces as much ‘Zero’ or more ‘Positive’ renewable energy than it consumes) commercial development can benefit the owner’s bottom line. In fact, targeting for NZE/NPE (Net Zero Energy/Net Positive Energy) in commercial real estate can be a very smart business move.