RecertifyReuseRepurpose
We turn second-life batteries into mobile and stationary energy solutions, to replace combustion engines, make the most of local generation and cut emissions.
Marny Energy
At Marny Energy we are convinced that electric-vehicle batteries can have more than one life. That is why we specialise in recovering them and building them into storage systems of our own. We control the whole chain, which is what lets us guarantee how our solutions perform while cutting their carbon impact.
Thanks to our own BMS, we offer two kinds of solution: the Battery-Shelter, to make the most of what a site generates, and the GAB, which replaces a fuel generator wherever the energy is not there.
Two formats. Only one technology.
Up to 360 kWh · 100 kVA
Power, wherever you need it.
A mobile power source, ready to deploy wherever the grid falls short. It powers your equipment directly on site and replaces any fuel-powered generator, with unmatched ease of use: 0 emissions, 0 noise, 0 vibration, 0 odour, 0 heat and 0 dust.
Up to 1,000 kWh
PRODUCE. STORE. USE YOUR ENERGY AT THE RIGHT TIME.
Store your energy when it is available and use it when you actually need it. Our stationary solution makes better use of your site's local production, with compact, modular storage built from second-life batteries to cut both costs and emissions. The system is compatible with the deployment of an electric-vehicle charging infrastructure (EVCI).
What we do
From sourcing to monitoring, we control every step of putting these batteries back to work.
01
Our batteries come from electric vehicles that left the fleet early. They still have their full potential in them before recycling.
02
We select every battery pack carefully, then put it through a complete test protocol to establish its state of health and its potential.
03
Every battery pack is fitted with our own BMS, then built into our solutions whole, without being dismantled.
04
We monitor every system to optimise how it runs and to extend the life of its batteries beyond 15 years.
Our experts
Behind Marny Energy is a team of enthusiasts blending technical expertise with operational precision, embodied by the duo formed by our founders:
President
EV-battery expert.
CEO
Management and business development.
Recognition
Partners
We share the same values, and we move forward together.
At Marny Energy, we know every energy need is different. Our solutions adapt to yours.
contact@marnyenergy.fr
© 2026 Marny Energy · Giving energy a second life
