美国联邦法规(10 CFR 430)明确指出：凡是进入美国市场的外接式电源供应器，都应达到*小能效等级level IV，且需在产品上明确标示出。不仅如此，也强制要求制造商、品牌商向DOE提交两份重要声明文件。是产品达到联邦法规在能效要求的符合性宣告(Compliance Statement)，第二是产品的证书报告(First Certification Report)，两份文件均须邮寄至美国能源部(DOE, Department of Energy)。
DOE认证法规包含10CFR429和10CFR430，其中10CFR429规定了样品选用规范和报告规范，10CFR430则规定了测试方法和符合性宣告规范。
DOE认证产品目录：
1.Battery Chargers
2.Boilers
3.Ceiling Fans
4.Central Air Conditioners and Heat Pumps
5.Clothes Dryers
6.Cloths Washers
7.Computer and Battery Backup Systems
8.External Power Supplies
9.Dehumidifiers
10.Direct heating Equipment
11.Dishwashers
12.Furnace Fans
13.Furnaces
14.Hearth Products
15.Kitchen Ranges and Ovens
16.Microwave Ovens
17.Miscellaneous Refrigeration
18.Pool Heaters
19.Portable Air Conditioners
20.Refrigerators and Freezers
21.Room Air Conditioners
22.Set-Top Boxes
24.Water Heaters
