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About me

Dr. Thomas Sonntag-Rösing

I have been managing the engineering firm C4SP for consulting and support in plant and mechanical engineering since 2023.

 

With over 25 years of international experience in energy plant construction, I support companies in making their business models, their structure and processes and also their projects future-proof.
Whether it is offer strategy, project planning or business development – I support you with technical expertise, entrepreneurial understanding and an eye for the essentials.

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Professional Consulting & Support

With technical expertise and strategic entrepreneurial vision, I have made it my mission to support companies in plant and mechanical engineering.

​I advise established companies as well as start-ups on business development, sales and bid management and project planning, project management, and the optimization of their corporate structures and processes.

I also enjoy being a speaker or coach in seminars and workshops on topics related to bid management, the specifics of conversion and modernization projects, as well as aspects of business organization and change management.

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My Philosophy

My work is based on three central principles:

  • Sustainable optimization of structures, processes, and operational business

  • Effective communication and strengthening team collaboration

  • Long-term strengthening of employees, organizations, and business models

 

​I am convinced that technical excellence and entrepreneurial success arise where people, structures, and processes interact effectively!

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Career Highlights

Management Responsibilities (Industry Experience Prior to Starting My Own Business)

  • Technical Director R&D Pyrolysis and Gasification Technologies

  • Planning, Construction, and Test Operation of a Biomass Reforming Pilot Plant

  • Project Manager Europe - PEM Fuel Cells and Backup Power Systems

  • Head of Proposal and Project Planning Teams for large-scale turnkey EPC Projects and Environmental Technologies

  • Division Head for Sales, Marketing & Communications, Project Planning, and Cost Estimation

  • Vice President Gas Turbines / Combined Cycle Power Plants Europe

  • Senior Vice President Sales & Proposals with additional focus on strategic business development and order intake planning in Europe

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Project Experience (Selection)

  • Large-scale projects in the field of thermal power plants (coal, gas, biomass) - EPC projects

  • Innovative technologies:

Pyrolysis and gasification technologies, hydrothermal carbonization, syngas production, fuel cells and carbon capture technology (CCS/CCU)

  • Future-oriented solutions / Energy Transition Projects:

Fuel Switch projects, electrolysis and hydrogen projects, (large-scale) heat pumps, battery storage (BESS) and solid-state heat storage systems, conversion and modernization projects

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Further Training, Management and Leadership Programs

To strategically expand my technical and operational experience, I have successfully participated in international

management and leadership programs:

  • Ready to Inspire, Hitachi Ltd., London, 2009

  • MHI Inter-Regional Talent Management Programme, Mitsubishi Heavy Industries, Sydney, 2019

  • Executive Leadership To Go, Mitsubishi Power Europe, Duisburg, 2020

 

These further training programs strengthened my ability to manage complex change processes – both in project management and corporate development.

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