ABOUT US
Independent Engineering.
Beyond the Standards.
Vertical Specialists in Surge Arresters,
Insulation Coordination & Lightning Performance
WHO WE ARE
Trusted by RTE (France), Powerlink (Australia), ENGIE Laborelec (Global), and PLN (Indonesia) — along with several power utilities, engineering firms and manufacturers across four continents. Since 2022, we have delivered independent expertise on surge arresters, insulation coordination and lightning performance for the power industry.
We are vertical specialists: narrow scope, deep expertise. Surge arrester technology, transients and insulation coordination studies, and lightning performance optimization on overhead lines — the full overvoltage-protection chain, under one roof.
Within lightning specifically, we are the only consultancy that owns the entire lightning-performance problem end-to-end — from raw lightning data, to simulation and system studies, to the application of optimized mitigation methods such as Line Surge Arresters, backed by our specialized tools Sigma SLP and I3CM LLS.
We combine technical precision with practical experience from international projects across diverse power systems and standards.
RTE
(France)
Powerlink
(Australia)
ENGIE Laborelec
(Global)
PLN
(Indonesia)
SOFTWARE SOLUTIONS
SIGMA SLP
(Lightning Studies)
Dedicated software solution for lightning performance studies on overhead lines.
I3CM LLS
(Lightning Data)
Dedicated software solution for lightning data analysis and risk assessment.
WHAT WE OFFER
Expert guidance on surge arrester selection, specification, and IEC/IEEE compliance.
Structured lightning performance improvement projects — from due diligence to implementation.
Transients & Insulation coordination studies tailored to your project (EMTP, PSCAD).
Dedicated software solutions: SIGMA SLP (lightning studies) and I3CM LLS (lightning data).
Proactive QA/QC on surge arreter projects (testing and manufacturing expertise).
CAPEX optimization through rigorous stress-strength analysis — right-sized specifications and application strategies, neither over- nor under-engineered.
Training and seminars on technology, standards, and best practices.
WHY CHOOSE US
Independent
free from manufacturer alignment and the bias of large engineering firms; our recommendations serve your project, not a product line or a billable-hours target.
Vertically specialized
deeper than generalist engineering firms in our scope, more agile than large consultancies built for full-system projects.
Client-centric
engineering decisions guided by your project’s requirements and outcomes
Dedicated tooling
where it matters - Sigma SLP and I3CM LLS combined with proven expertise deliver unmatched capabilities in lightning performance on overhead lines.
Flexible engagement
long-term cooperation or project-based work.
ABOUT FLORENT GIRAUDET
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+16 years of experience in the power system industry
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12 years experience in the surge arrester industry including composite insulators, monitoring system and special applications.
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2 years at Tridelta Meidensha GmbH (Germany) - Management position
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10 years at Siemens AG / Siemens Energy AG (Germany)
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Expertise in products development, testing, sales, marketing, and project management.
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Leading development and adoption of Line Surge Arresters application worldwide.
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Author of technical contributions for LSA application, guidance, design and testing.
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Active members of IEC, IEEE, and CIGRE working groups.
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English (Fluent), French (Native), German (Intermediate).
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Electrical & Industrial Engineering degree (graduated in France).
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Advanced Technician Certificate (BTS) in Electrical Engineering
CORE VALUES
“In my role as an independent consultant for the electricity supply industry, I hold steadfast to core principles that ensure trust and transparency with every engagement. My commitment to upholding stringent compliance guidelines ensures the sanctity and confidentiality of our collaborations. While I maintain a close association with Sadovic Consultant for dedicated solutions, I operate independently, free from affiliations to specific manufacturers. This ensures an unbiased approach, devoid of conflicts of interest, allowing me to serve the best interests of my clients at all times.”
OUR APPROACH
TECHNICAL CHALLENGE
Understand the problem, system conditions and operating environment.
RISK ASSESSMENT
Evaluate risks, failure modes and impact on assets and operations.
PERFORMANCE REQUIREMENTS
Define measurable performance objectives and acceptance criteria.
SOLUTION EVALUATION
Assess all credible options against technical and commercial criteria.
SOLUTION SELECTION & MEASURABLE OUTCOMES
Select the most appropriate solution and deliver measurable results.
Independent. Vendor Neutral. Focused on Outcomes.
Metarresters provides independent engineering advice, free from manufacturer alignment or commercial interests.
Our approach is based on technical evidence, rigorous analysis and your project objectives.
The best solution is not always the most familiar or the most widely used — it is the one that best meets your technical and operational requirements.
Key Principles
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Independent engineering expertise with no manufacturer affiliation.
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Evidence-based evaluation of all credible solutions.
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Recommendations driven by project requirements and long-term outcomes.
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Technical and commercial optimization for reliable and sustainable performance.
STANDARDS & INDUSTRY LEADERSHIP
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IEEE P1243 Working Group
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TC 37/WG 14 (Convenor)
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TC 37/PT 60099-11
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TC 37/MT 4
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TC 37/MT 10
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Working Group A3.39
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Working Group C4.57
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Joint Working Group B2/C4.76
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Active Contributor
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Session Chairman
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Conference Director
LET'S DISCUSS YOUR PROJECT
Whether you need support for lightning performance studies, surge arrester technology, insulation coordination, transient analysis, or specialized software, Metarresters is available to support your project with independent engineering expertise.
We welcome the opportunity to discuss your technical challenges and project requirements.