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
We recover batteries from electric vehicles and build them into our own storage systems, designed and manufactured in Europe. Controlling the whole chain, down to the BMS we develop ourselves, is what lets us cut CO₂ emissions without letting the cost of storage run away.
Two formats come out of it: the Battery-Shelter, stationary, to make the most of what a site generates; and the GAB, mobile, which replaces a fuel generator where the grid does not reach.
Two formats. One and the same 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 a recovered battery to a delivered kWh, we control every step.
01
Our batteries come out of written-off electric vehicles. They have finished driving, not working.
02
Every pack is examined before it is integrated, so its performance matches what its new job asks of it.
03
The battery management system is developed in house. That is what lets us control the chain end to end, and add 10 to 15 years of service before recycling.
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
