e-troFit – electrifying

The demand for electric mobility in public transport is rising rapidly: many operators would like to switch their city buses to electric drives. However, replacing existing fleets completely with new electric vehicles is neither economical nor sustainable.

Retrofitting is the intelligent and sustainable alternative to buying a new one! With our award-winning e-troFit® concept, we offer an innovative and intelligent retrofit solution for diesel buses and trucks. Give your diesel vehicles an environmentally friendly "second life" as an electric vehicle.

Up to 50%
cheaper than new vehicle
Longer life span
for existing vehicles
range and battery capacity

The e-troFit concept

e-troFit® is an innovative retrofit kit for commercial vehicles: e-troFit gives existing diesel vehicles an environmentally friendly "Second Life" as an electric vehicle. This enables you to make a quick and cost-effective entry into electromobility and to continue using your existing vehicles in a sustainable and environmentally friendly manner.

e-troFit is individually adapted to the customer's requirements: Based on an analysis of the route profile, we determine the actual battery capacity requirement and use only as much battery as necessary. At the same time, we develop a suitable charging concept and design the vehicle so that it meets all the requirements of everyday life.

After this initial concept phase, the modification can take place within a few weeks.

  • Modular battery concept: We do not install more batteries than necessary.
  • Flexible charging concepts: Night charging or opportunity charging possible

Why choose retrofitting?


The conversion is up to 50% cheaper than buying a new electric bus. During operation, you also benefit from lower operating costs due to lower energy costs and reduced maintenance.

Longer life span

Are you looking for a quick start in electric mobility? However, it is neither economical nor sustainable to completely replace existing bus fleets - usually with a remaining service life of a few years. Retrofitting even extends the **life span of existing vehicles **.


Thanks to the modular battery concept, we adapt the range of the vehicle individually to suit the specific requirements: We install as much battery capacity as necessary to meet all requirements in daily operation.

Meet e-troFit!

Strong partnerships

We offer a professional conversion solution comparable to the performance and standards of new electric vehicle. This includes professional service!

e-troFit has established a preferred partnership with ZF Friedrichshafen AG: ZF not only supplies original components for the electric powertrain, but also provides the service network for the actual modification. The e-troFit upgrade takes place in a certified partner workshop close to the customer.

Our extensive development competence combined with ZF's manufacturing and service know-how: The partnership ensures a high-quality product comparable to a series vehicle.

Award-winning solution

e-troFit has been awarded several times - including the renowned German Mobility Prize, which is awarded by the initiative "Germany - Land of Ideas" and the Federal Ministry of Transport and Digital Infrastructure. The award honors projects that create innovative solutions for sustainable transport.

Andreas Scheuer, German Federal Minister of Transport and Digital Infrastructure and patron of the German Mobility Award said in his laudatio: "We need ideas that can make our mobility more efficient, cleaner and more digital". e-troFit, according to the Minister, is a solution "for improvements that take immediate effect".

January 23 - January 29, 2021
NWO - AJO-Tagung
  St. Maria Alm
January 27 - January 28, 2021
February 02 - February 03, 2021
12. VDV-Elektrobuskonferenz