Bus manufacturers faced with a choice: retrofitting or buying new – and what remains of the funding
Bus manufacturers faced with a choice: retrofitting or buying new – and what remains of the funding
Over 3,500 electric buses have already been subsidized. Rising diesel prices remain, and the federal government's call for funding ended on July 21, 2026. Bus manufacturers and operators face a strategic decision and master bureaucracy, costs, and climate targets best with a clear plan.
The topic briefly and concisely
The BMDV funding call for e-buses and conversions ended on July 21, 2026; a follow-up call has not been announced.
The diesel-to-electric (DTE) conversion is a sustainable and economical alternative to purchasing new vehicles, protecting investments in existing vehicle structures.
The EU directive "Clean Vehicles Directive" (CVD) mandates increasing quotas for zero-emission buses and makes electrification essential for public operators.
For bus manufacturers and fleet operators, the situation is clear: the EU's Clean Vehicles Directive (CVD) will significantly tighten emission targets from 2026 onwards. At the same time, the uncertain development of diesel prices is impacting the total cost of ownership (TCO) of your fleet. The funding directive of the Federal Ministry for Digital and Transport (BMDV) recently offered up to a 70% subsidy on the additional costs of retrofitting to electric drive. The 2026 funding call for buses ended on July 21, 2026. This article serves as your pragmatic guide to setting the course for an economical and sustainable future – through the intelligent retrofitting of your existing fleet.
Your 4-step checklist for e-bus funding
The path to a funded e-bus fleet requires a structured approach, even though the most recent call for funding ended on July 21, 2026. Four strategic steps properly organize the funding question for your fleet.
Fleet analysis and TCO assessment: Record the status quo of your fleet with an average mileage of 87,000 km per year and analyze the Total Cost of Ownership (TCO) of your diesel vehicles.
Perform economic comparison: Compare the TCO of a conversion with the costs of purchasing new. A conversion can reduce investment costs by up to 50%.
Develop charging infrastructure concept: Plan the required charging infrastructure, which was funded at 40% in the bus program. Take into account charging capacities of up to 165 kW for high vehicle availability.
Document eligibility for funding: Compile all documents for a project outline and keep them up to date; we will clarify which programs are currently open on a case-by-case basis.
This structured approach is the basis for the next crucial step: the detailed planning of funding.
Funding pools in review: 70% for vehicles, 40% for infrastructure
The BMDV's "Directive on the Promotion of Alternative Drives for Buses in Passenger Transport" was recently the central instrument for fleet conversions. The 2026 funding call covered up to 70% of the additional investment costs for the procurement of or retrofitting to battery or fuel cell drives, and 55% for a higher level of electrification. Particularly the funding for the retrofitting of existing vehicles is a decisive advantage. It makes it possible to preserve the value of your existing vehicles. In addition, 40% of the costs for the necessary charging and maintenance infrastructure were eligible for funding. This funding was a direct response to the requirements of the Clean Vehicles Directive (CVD), which prescribes a quota of 65% for "clean" buses from 2026. The allocation of funds took place in a competitive process in which well-founded concepts submitted early on were preferred. Technological implementation is just as important as financing.
Technology in Focus: Why Remodeling Outweighs Buying New
The DTE conversion is more than just a cost-effective alternative; it is a clear commitment to the circular economy. Instead of scrapping a fully functional vehicle body, it is upgraded for a second, locally emission-free lifespan. After conversion, a HEERO low-floor rear bus achieves a practical range of up to 300 km with a 96 kWh net battery. The HEERO Tourer for 9 people even achieves up to 400 km. These values easily cover most urban and regional routes. Converting a proven base vehicle like the Mercedes-Benz Sprinter into a HEERO DTE Sprinter secures you a range of up to 425 km. The core of the vehicle is preserved, which minimizes driver training and simplifies the supply of spare parts. Another advantage is the rapid availability compared to delivery times of over 12 months for new electric bus models. However, this technological superiority must also be reflected in the operating costs.
TCO Analysis: How Retrofitting Lowers Your Operating Costs
The Total Cost of Ownership (TCO) is the decisive key figure for the profitability of your fleet. It includes all costs over the entire lifespan of a vehicle. While a new electric bus incurs high acquisition costs, a DTE conversion reduces these by up to 50%. The operating costs of a converted e-bus are significantly lower. Electricity costs are up to 70% lower compared to diesel, and maintenance costs fall by over 60% due to the elimination of oil changes and exhaust systems. With the funding from the Busaufruf 2026 and the operating cost advantages, a converted bus often amortized its investment after just four to six years. Studies show that e-buses are already cheaper than diesel buses today, including external costs. The right charging infrastructure is the key to fully exploiting these advantages.
Intelligently plan charging infrastructure: With up to 165 kW for full availability
An efficient charging infrastructure is the backbone of any e-bus fleet and was eligible for 40% funding in the 2026 bus call. The requirements vary depending on the vehicle type. HEERO relies on high-performance DC fast charging to minimize downtime. The HEERO mid-low-floor bus charges at up to 165 kW, meaning the 115 kWh net battery is 80% charged in around 45 minutes. Other models like the rear-low-floor bus or the Tourer charge at up to 135 kW. This high charging capacity enables flexible depot charging overnight or rapid intermediate charging during operational breaks. A careful analysis of your depot and route schedules is crucial for the correct dimensioning. Intelligent charging management distributes the available grid capacity optimally and prevents costly peak loads. This is how you ensure maximum availability of your fleet at minimal energy costs.
Next step: Start your free subsidy analysis
The 2026 funding call for buses ended on July 21, 2026, and a subsequent call has not been announced. Do not hesitate to set the course for a clean and economical future. Start your funding analysis: Answer three questions and receive your grant roadmap with an assessment of the funding situation.
To the free analysis
free of charge · non-binding · factual
Note: The content of this article represents general information and does not replace legal or funding advice.
More useful links
The Bundesamt für Logistik und Mobilität (BALM) offers comprehensive information on the Climate Protection and Mobility funding program, particularly for commercial vehicles.
The L-Bank Baden-Württemberg provides information on its funding programs for electric commercial vehicles.
The Förderdatenbank des BMWi provides details on the funding program of the Federal Ministry for Economic Affairs and Energy for electric commercial vehicles, applications, and infrastructure.
The Nationale Leitstelle Ladeinfrastruktur provides information on the subject of commercial vehicles and charging infrastructure.
The KfW-Bankengruppe provides an overview of funding opportunities in the field of sustainable mobility for companies.
DEKRA offers information on retrofitting trucks to electric drive.
A Merkblatt des BALM explains the funding for the retrofitting of commercial vehicles.
The PwC E-Bus-Radar offers an analysis of electromobility in public transport (ÖPNV).
Statista provides statistics on the number of electric buses in Germany by drive type.
