What refrigerator is the most energy efficient?

energystar.gov says: Brand Model Configuration Defrost Type Compact Ice Volume Adjusted Volume kWh/year Federal Standard (kWh/year) Percent Better Active Active Date Sun Frost RF-12 Top Freezer Partial No No 10.12 11.41 171 349 51% Yes 1/2/2003 Sun Frost R-19 Refrigerator Only - Single Door Automatic No No 16.14 16.14 204 434 53% Yes 1/2/2003