V2G, EMS, BESS, OCPP 2.1 and IEC 15118-20 — engineering reliable energy systems for sustainable mobility.
Industry insights & technical analysis
Vehicle-to-Grid Technology
Exploring bidirectional energy flow and mobile energy storage systems
Read ArticleAI-Driven Energy Management
Machine learning applications in residential energy optimization
Read ArticleEnergy systems, EV charging &
grid technologies
I build and validate EV charging infrastructure and grid-integrated energy systems — from OCPP/IEC 15118 communications to EMS/BESS integration and smart load control.
Linky module ERL --
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Charging Station --
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Tic linky --
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Micro grid with V2G --
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Charging station with V2G function --
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About me
Control Command Engineer and Team Leader focused on EV charging (V2G/V2H), EMS/BESS integration and energy analytics. I prototype and test charging stations to OCPP 2.1 and IEC 15118‑20, integrate control systems across AC/DC infrastructure, and deliver grid‑compliant solutions (e.g., RfG 2.0). Founder of Muranai.com, helping companies reduce energy costs and plan DER‑ready grids.
Nassim Guelma
Creating
impactful projects
I wonder if I've been changed in the night? Let me think. Was I the same when I got up this morning? I almost think I can remember feeling a little different.
Complete EV Management Solutions
End-to-end EV charging management: OCPP 2.1, CSMS integration, fleet, billing and reporting.
AI‑Powered Energy Efficiency
AI insights to reduce energy costs and optimize consumption across assets and sites.
Grid Planning & DER‑Ready Analytics
Scenario modeling for EMS/BESS sizing, grid impact assessment and DER readiness.
Demand Flexibility & Smart Load Shaping
Peak shaving, V2G/V2H strategies, dynamic tariffs and load shifting control.
Latest publications
Updated Mar 2025
Prompt Engineering Mastery Guide
Read on MuranaiComprehensive strategies and frameworks (CoT, ToT, ReAct) to unlock LLM potential in real workflows.
Updated Jan 2020
The secret of changing
Read on FnacPersonal development insights by Nassim Guelma.
Engineering
journey
My education
2019
Master's Degree in Power Electronics
ENSEEIHT Engineering School, ToulouseSpecialized in design and optimization of energy converters. Project: Energy management system for microgrids.
Work experience
May 2025 – Present
Technical Team Leader (Via Segula)
at Renault Group — France (CDI)
Prototype and test V2G charging stations to OCPP 2.1 and IEC 15118‑20; integrate and validate AC/DC control systems with EMS; ensure PCS and communications comply with grid standards (RfG 2.0).
Jan 2024 – Present
Founder
at Muranai.com
B2B platform delivering AI‑powered energy intelligence: EV management, energy efficiency, DER‑ready grid planning and demand flexibility.
Oct 2020 – Present
Expert Council Member
at GLG
Provide expertise on smart grids and power electronics; advise on energy‑efficient technologies and sustainable transitions.
Mar 2023 – May 2025
Control Command Engineer (Via Segula)
at Stellantis
Developed peak shaving and smart charging; executed V2G benchmarks and system performance reviews; integrated BESS with EMS; architected MQTT communications across EMS, BESS, CSMS and VPP.
Oct 2019 – Jan 2023
Electrotechnical Engineer
at SNCF — France (CDI)
Coordinated HV/LV power and telecom modernization; enforced safety protocols; led validation and testing to meet grid interface requirements.
Apr 2019 – Sep 2019
Smart Grid Engineer Intern
at Leroy‑Somer
Modeled and simulated renewable/BESS integration; analyzed AC/DC conversion interfaces; developed EMS strategies to improve stability.
Jan 2019 – Mar 2019
Smart Grid Engineer Intern
at SNCF
Configured and qualified control systems; sized PV and DC/DC–DC/AC converters; defined execution diagrams.
Certifications & training
—
Selected programs
Industrial Project Management (Affix‑Formation, Paris); Electrical Authorization for Electric & Hybrid Vehicles (Affix‑Formation, Paris); Supervised Machine Learning: Regression & Classification (Stanford Online); Entrepreneurship & Client Development via Digital Marketing (Livementor); Volunteer First Aid Certificate; Learning Microsoft Project (PMI); Manage the Company of the Future (London Business School).
Languages
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French — Bilingual; English — Professional; Arabic — Native
Volunteering & leadership
2014 – 2018
Manager — Charity Organization (Education)
Organized fundraising events and coordinated educational programs.
2012 – 2019
Professional Football Referee (Regional)
Managed 100+ regional matches; quick decision‑making and conflict management.
2012 – 2017
Student Union Member
Organized educational and social events for students.
My favourite tools
AutoCAD
Python
Pytorch
CANalyzer
MATLAB
HTML5
E-Plan
Notion
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Just say hello!
Want to know more about me, tell me about your project or just to say hello? Drop me a line and I'll get back as soon as possible.
Done!
Thanks for your message. I'll get back as soon as possible.Location
Paris, Île-de-France, France
