Symbio is capable of meeting the needs of manufacturers looking for a quick way to equip their electric vehicles with hydrogen solutions.

the challenges

Faced with increasingly strict regulations with regards to disturbances (pollution, noise, etc.) and increasingly limited access to town and city centres, a number of professionals need vehicles which are simultaneously :


– Zero emissions – to comply with future regulations straight away.
– Not restrictive in terms of use (sufficient autonomy, can be “filled” in just a few minutes) Manufacturers want a specialist offer that will enable them to maintain a handle on costs.

Aside from the product itself – the different versions of the battery – Symbio offers manufacturers a range of engineering services, with the aim being to optimise and accelerate their influence on the electromobility market.


This strategy is suitable for use with a wide range of vehicles (light utility vehicles, heavy-goods vehicles, buses, coaches, taxis, shuttles, passenger vehicles, trains, boats, construction vehicles, public works or mining vehicles, handling or lifting vehicles, etc.).



LEVER 1 : Improving our range of products

The hydrogen solutions developed by Symbio provide electric vehicles with significant competitive advantages:

– At least twice the autonomy of battery only vehicles, identical in all seasons. With Symbio’s solutions, the heat produced by the hydrogen battery is used to heat the interior of the vehicle – electrical energy available via the battery is therefore not reduced through heating/air conditioning, meaning autonomy is retained.

– Rapid hydrogen recharge – roughly 3 to 5 minutes at the station for light utility vehicles and 10 to 15 minutes for trucks and buses.

– Access to a wide range of backups and equipment (calorimeter box with cold unit, etc.) without this having any impact on autonomy thanks to the quantity of energy stored in the battery.

– Connection to a range of digital services, all of which are quick to use and of significant economic benefit. The mysymbiofleet.com web portal and the MySymbioFleet application enable fleet managers to access almost real-time information on the data produced by each vehicle (available autonomy on board, level gauges for hydrogen and the battery, distance travelled each day, visits to hydrogen recharge stations and recharge times on the electrical network (for plug-in vehicles)). This allows them to optimise management.

LEVER 2 : reduced implementation costs

Symbio’s technological platforms are compatible for use with various applications: the choice of power (from 5kW to 400kW), the hybridisation method and the quantity of hydrogen to store will be made based on each product – depending on the specificities of the market, how it will be used, expected benefits and the intrinsic structure of the product itself.

Different hybridisation methods are available :


The hydrogen fuel cell provides the whole power and energy.


The hydrogen fuel cell provides the average power that is necessary for a cycle of usage, the quantity depends on the kind of this usage..


The hydrogen fuel cell provides power to get a satisfying range. The kind of usage defines the fuel cell’s power.

Examples :

The Kangoo ZE H2 is a battery-operated vehicle equipped with a Symbio 5kW hydrogen range extender. When used in urban and suburban environments, this solution is economically viable for clients - the operational advantages of the product will not put a strain on operating costs. Any additional expenses incurred will be quickly offset by operational gains with regards to autonomy and flexibility of use. For manufacturers, adding a range extender makes vehicles more attractive to new clients, particularly those not satisfied with the capacity of battery only vehicles. (back to the product page).

The Maxity Fuell Cell is a battery-operated vehicle equipped with a Symbio hydrogen range extender. Developed for Renault Trucks, and used most notably by La Poste (the French Postal Service) in hilly areas outside the urban perimeter as well as in dense urban areas, this delivery truck comes with a 20-kW battery. This means it is able to double its autonomy levels while providing excellent value for money.

The Green GT H2 is a prototype racing vehicle for Le Mans, 300 kW Full Power, which does not have a battery. Energy is supplied entirely using hydrogen. It should also be noted that Symbio boasts expertise in putting together funding dossiers for R&D projects, at both a French and a European level.

LEVER 3 : reduced market launch timeframes

Symbio’s H2 Ready method means we are able to integrate our systems quickly and efficiently into vehicles. Based on the “Design for Manufacturability” principle, H2 Ready consists of :

– Approving a functional prototype of the target hydrogen electric vehicle with the manufacturer.

– Supporting the manufacturer with the turnkey industrialisation of vehicle conversion – the manufacturer will have the option of acting as the contracting authority for this conversion process or delegating it to Symbio.

– Rendering production secure through a base of suppliers, methods and various types of assemblies and tests, as well as an efficient industrial and logistical framework.

– Ensuring that the product is compliant with all standards and regulations required for hydrogen, including EC79, throughout the integration process. Several generations of products equipped by the company have obtained RCE (European Community receptions) accreditation. This applies to the Renault Kangoo ZE H2, for example, in both its 350b and 700b variations.

– Providing manufacturer after-sales employees with the necessary training in relation to maintenance and upkeep for the hydrogen system.

– Supplying manufacturers with an on-board telematic system and a technical helpline to enable workshop technicians to formulate remote diagnostics on the hydrogen unit .

LEVER 4 : optimised after-sales follow-up and commercial deployment

In Symbio’s role as a major player in Europe’s “Hydrogen transport” ecosystem, we support our manufacturer clients with commercial deployment and marketing for converted vehicles.

This allows the company to :
– assist the manufacturer with marketing decisions regarding the product with the hydrogen option (help with drafting arguments for different media – brochures, website, etc.).

– Train and assist the manufacturer’s sales staff.

– Support the manufacturer’s support staff with regards to maintenance and repairs for vehicles in use.

– Provide support and advice to professional fleets seeking to introduce their own hydrogen recharge infrastructure, working closely with filling station manufacturers and energy suppliers.

GREEN GT testimony

Building a zero-emission racing car… That is the challenge Jean-François Weber, founder of Green GT (a company specialized in prototypes of high-energy level electric and hydrogen propulsion systems), dared to take up. “Since competition requires we try to achieve excellence in lightweight, power and range, it represents the best support to demonstrate we are able to get rid of fossil fuels in the automotive industry” he explains. Battery-only models are not relevant for such an achievement. “They are not adapted for high power, when we both need long range and performance, in racing or freight transport for instance, explains Jean-François Weber. As or the hydrogen fuel cell, it is perfect!”. Meeting up with Symbio was a key moment in terms of putting his ideas into practise. “Over and above their expertise with regards to battery cores and electronic stack management, their engineers supported us throughout the entire project, from design through to using the vehicle and including co-creation of a system that is perfectly tailored to competition” reminds Jean-François Weber. Their perfect understanding of our issues was a key factor in the success of the project”.


This collaboration led to further technological innovations, including the air circuit that was redesigned in such a way so as to render the battery more compact. The final result, the Green GT H2, is the first high-power electric hydrogen prototype that could make a whole lap of the 24 heures du Mans racetrack in 2016. It has already covered more the 12,000 kilometres without any problem on the hydrogen system. More than an achievement, this is one step further into the future.