Benton PUD offers rebates to builders of homes which meet Energy Star Northwest Home standards. Qualified homes are independently verified to be at least 30% more energy efficient than homes built to the 1993 national Model Energy Code or 15% more efficient than the state energy code, whichever standard is higher. Typically these standards may be met through building envelope upgrades, high performance windows, air infiltration controls, efficient HVAC and duct systems, and upgraded water heating.