OCELY is a Paris-based engineering consultancy focused on energy transition projects across renewables, heat networks, and rail infrastructure. The tech stack—PSCAD, PVSyst, Revit, BIM, Schneider Electric, Siemens, and building-automation protocols (BACnet, Modbus, KNX)—reflects a firm built around design-phase simulation and operational control rather than software development. Hiring velocity is accelerating with 32 engineering roles open (mostly mid and senior level), suggesting scaled project delivery and a growing client backlog in solar, heat infrastructure, and rail electrification.
OCELY operates as a two-pole consulting practice: Operations (design, build, and operate energy infrastructure) and Strategy (decarbonization studies for client operations). The active project list reveals focus areas in photovoltaic systems, district heat networks, battery energy-storage solutions, and railway electrical infrastructure. The firm works with industrial and infrastructure clients on complex, multi-phase energy projects. Pain points flagged across their engagements—deadline pressure, construction-process optimization, project coordination, and compliance on safety-critical systems—are consistent with mid-market capital projects in energy and transport sectors.
OCELY uses PSCAD and PVSyst for electrical simulation, AutoCAD/Revit/BIM for design, Schneider Electric and Siemens platforms for controls, and building-automation protocols including BACnet, Modbus, KNX, and LonWorks.
Current projects span photovoltaic design and grid connection, district heat-network infrastructure, solar plant studies, battery energy-storage solutions, railway station electrification, and industrial site modernization.
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