MethodologyΒΆ Background Purpose, Goal, Audience Historical Context Asset vs. Operational What is an asset rating? What is an operational rating? Scoring Methodology How Are Homes Scored? Scale Compensating for differences in home size and location? The Home Energy Score Scale: Bin Definitions Site to Source Conversion Factors Accounting for Residential Solar Installations Cost Savings: What utility rates are assumed? Carbon Savings: Carbon Conversion Factors Recommendations Models Heating and Cooling Water Heater Model Infiltration Model Weather Model Defaults User Inputs API Access Use Access Programming Testing Certification