1. Aggreko plc
2. Atlas Copco AB
3. Briggs & Stratton Corporation
4. Camda New Energy Equipment Co. Ltd.
5. Caterpillar Inc.
6. Champion Power Equipment Inc.
7. Coopercorp Generators
8. Cummins Inc.
9. DuroMax Power Equipment
10. Eaton Corporation plc
11. FIRMAN Power Equipment
12. Generac Holdings Inc.
13. Generac Power System
14. General Electric
15. GENMAC S.r.l.