Our Services Operations & Maintenance Operations support and maintenance are the main areas of international expansion for Energy Global Services. Electrical & Instrumentation We specialize in the maintenance of industrial facilities (electrical systems and instrumentation). This is our core business. Mechanics & Rotating Machinery We also specialize in mechanical maintenance for stationary and rotating machinery, as well as structural and construction projects. PLC-DCS/ICSS Control System Our project support teams generally have expertise in two areas: PLC and DCS/ICSS.