Complex sentence: An example of a successful "best practice" from the guide is "Building Codes for Energy Efficiency" to use building energy codes to set standards that establish a minimum level of energy efficiency standards for residential and commercial buildings.
Split into simpler sentences: An example of a successful "best practice" from the guide is "Building Codes for Energy Efficiency". This practice is to use building energy codes to set requirements that establish a minimum level of energy efficiency standards for residential and commercial buildings.