GreenSavers is a top-tier Trade Ally Contractor with Energy Trust of Oregon and multi-year winner of the ENERGY STAR Contractor of the Year Award. The energy audit takes 2-3 hours and includes our full set of diagnostic tests. What you get is a complete breakdown of costs, cash incentives, and available tax credits. Check out our sample Home Performance Report. The $400 charge counts as a credit towards any project totaling $2,500 or more.