Partial list of international companies with whom BEMCO has worked in the past and present:
- ABB-Switzerland
- Agra-Moneco-Canada
- Alstom-France
- APINA- Spain
- AREVA- France
- Bechtel-USA
- Bellelli-Italy
- Black & Veatch-U.S.A.
- CADAGUA- Spain
- CBI- USA
- DURO Felgueraca- Spain
- EFACEC- Portugal
- Enron-U.S.A
- Enropie- France
- Ewbank Preece-UK
- Foster wheeler-Italy
- General Electric-USA
- Hitachi-Japan
- Hitachi Zosen- Japan
- Hyundai-Korea
- IBC - Spain
- Impregilo - Italy
- International Power- UK
- Ishikawajima- Harima Heavy Industries Co.- Japan
- Kennedy & Donkins-UK
- Korea Heavy Industrial Co. (Doosan)-Korea
- Korea Power Engineering Company(KOPEC)-Korea
- Lurgi-Germany
- Merz & McLelland-UK
- Mitsubishi-Japan
- Mitsui-Japan
- MOT McDonald- USA
- Nuovo Pignone-Italy
- PB Power- UK
- Shaw Group Inc.- USA
- SK Engineering & Construction - Korea
- Siemens-Germany
- Spie- Batignolles- France
- Tecnicas Reunidas (TR) - Spain
- TermoMeccannica-Italy
- Toshiba-Japan
- Water Leau- Belgium
- Weir- UK
- YIT-Finland