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Bertrand GriveletBG

Bertrand Grivelet

Photovoltaic Consultant – Management & Strategy

€700/day
Angers, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Bertrand

Independent consultant in photovoltaic project development, I support public and private stakeholders in structuring, optimizing, and managing renewable energy projects, from strategy to execution.

With over 5 years of experience in strategic consulting, renewable energy projects, and B2B solutions, I address economic and operational challenges with a pragmatic approach focused on profitability, performance, and rapid decision-making.

In parallel, I developed SUNSIZE, a techno-economic and energy pre-feasibility software for photovoltaic professionals, which I use daily to secure my clients' decisions and market as an annual license.
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Conversational

Can work on-site
Angers (up to 10km), Bordeaux (up to 10km), Toulouse (up to 30km), Paris (up to 10km)

Experience

  • ZAMANA
    Branch Manager Guadeloupe - Overseas Solar & EV Charging Projects Manager
    ENERGY AND UTILITIES
    July 2023 - September 2025 (2 years and 2 months)
    La Guadeloupe, France
    My main responsibilities:

    - Deployed and structured the Guadeloupe branch for an ultra-marine SME

    - Managed the development of solar projects across the entire value chain in the French West Indies (8 major projects, €2 million cumulative)

    - Led strategic performance missions: cost optimization and rationalization

    - Developed and delivered ancillary water/sanitation projects (annual revenue €500k)

    - Managed and coordinated study, construction, and administrative teams (7 to 10 employees)
    Photovoltaic Project Management Energy Team Management Solar Energy
  • SUNSIZE
    Creator of the B2B Solution Sunsize
    January 2023 - Today (3 years and 5 months)
    - Designed and developed a B2B photovoltaic pre-feasibility software solution for professionals

    - Integrated all technical configurations and business models on the market

    - Automated energy and economic sizing, with report generation, quotes, and key KPIs (≤ 15 min/project)

    - Customized the solution according to client specifications
  • Argon & Co
    Operational Excellence Consultant
    CONSULTING AND AUDITS
    May 2022 - Today (4 years and 1 month)
    Paris, France
    Carried out high-value-added consulting missions, including:

    - Managed cost reduction programs at SNCF Transilien (-10 to -20% depending on lines)

    - Automated logistics tasks in the repair center of a major luxury player (saving 2.5 hours/day for operational managers)

    - Structured the creation of a joint venture with an Indian partner for a multinational jewelry company
    Cost Reduction Automation Microsoft Excel Microsoft Powerpoint

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Education

  • Energy Engineer
    INSA Toulouse
    2021
  • Master in Innovation Management & Entrepreneurship
    emlyon business school
    2022

Skill set

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