When it comes to smart mobility, the transition to electric trucks is a critical step toward achieving climate targets. However, this transition requires robust EV charging infrastructure and grid enhancements to support the growing demand. In this article, we explore the challenges and solutions for accelerating the electric truck transition.
In April 2024, the EU introduced new regulations requiring manufacturers to cut emissions from large trucks by 45% by 2030, rising to 90% by 2040. This has already led to a surge in electric truck registrations, with a more than 200% increase in 2023 compared to 2022, reaching 5,279 new registrations. However, while manufacturing electric trucks is progressing, the development of charging infrastructure remains behind the targets necessary to support these fleets effectively.
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The recent boom in electric passenger vehicles has paved the way for growing demand for electric trucks, driven by their sustainability, efficiency, and performance benefits. Electric trucks locally produce zero emissions, making them a key solution for reducing environmental impact. Their popularity is further supported by the European Council’s decision to reduce emissions from truck traffic by 90% by 2040.
Cost-efficiency is another factor driving adoption. While predictions about cost parity with internal combustion engine (ICE) trucks vary, studies suggest that declining battery costs and lower operating expenses will significantly reduce the total cost of ownership (TCO) before 2030. Additionally, EU regulations mandating 45-minute breaks for truck drivers every 4.5 hours align well with the capabilities of 1MW chargers, which can fully charge an electric truck within this timeframe. Meaning fleet operators don’t have to sacrifice efficiencies, given the right charging infrastructure.
Other advantages include reduced maintenance requirements, lower noise levels, and less vibration, making electric trucks more comfortable to drive and less disruptive to local environments. With demand for electric trucks set to grow, ensuring adequate EV charging infrastructure is crucial to support this transition.
| European Union | |
| 2022 | 1580 |
| 2023 | 5279 |
A key challenge in the electric truck transition is the reliance on the grid to deliver sufficient power. Studies indicate that by 2035, each highway service station in Germany will need to offer at least 30 MW of charging capacity to meet the needs of electric trucks and passenger EVs. Medium-voltage connections, which max out at approximately 25 MW, are insufficient for future mobility requirements. High-voltage connections, capable of delivering over 100 MW, are essential to support growing fleets of electric trucks.
However, grid upgrades are slow. As Martin Konermann, managing director of EnBW’s electricity-net operator NetzeBW, highlights, change needs to happen fast to build enough grid connections to support the projected increase in electric trucks on the road:
Taking into account eight years of planning and approval and two years construction time, a high-voltage power connection with the associated charging park takes approximately 10 years to implement. Now is the time to build the necessary charging infrastructure along highways.
Battery storage systems offer a temporary solution to grid strain. Integrated into charging stations, these systems act as decentralized buffers, storing excess energy during low-demand periods and releasing it during peak times. With lithium-ion battery costs having dropped by over 90% since 2010, this is a cost-effective way to manage increasing loads while grid upgrades are underway.
While the e-mobility sector grows, demanding more and more from the grid in the process, Germany’s power grid is also on a mission to accommodate the energy transition. To reduce emissions, the German government has set a target for at least 80% of the country’s power to be sourced from renewables by 2050. To achieve this, and to make the electric truck sector truly sustainable, renewable energy must be constantly integrated into the grid to replace conventional non-renewable energy sources. Supporting this transition requires both the transmission grid (high-voltage, long-distance electricity transport) and the distribution grid (medium to low-voltage, local distribution) to adapt to the variability of renewable energy. EnBW has built a Converter in Phillipsburg for that purpose: EnBW Converter Phillipsburg
In the transmission grid, the balance between electricity generation and consumption must be maintained by equalizing fluctuations through redispatch and balancing energy within each control area. Renewable energy’s variability also threatens system stability, requiring careful coordination among Germany’s four control areas and with neighboring countries via interconnectors. Additionally, integrating renewable energy into the grid requires substantial grid expansion measures, such as high-voltage direct current (HVDC) transmission, to facilitate the efficient transport of electricity within Germany and to support cross-border electricity exchange across Europe. Another example from EnBW: The TransnetBW Booster in Kupferzell
Meanwhile, the distribution grid must connect, supply, and control both consumers and decentralized feeders within a grid area while integrating decentralized renewable electricity generation plants. This integration will require grid reinforcement to accommodate new consumers, as sectors like e-mobility and electric heating technologies become more widespread. Finally, enhancing grid transparency by digitalizing consumption and generation systems through the use of smart meters and smart grids can facilitate more efficient grid management and accelerate renewable energy integration.
Battery storage solutions can also be placed throughout transmissions and distribution networks to support the integration of renewable energies into the grid. Battery storage supports renewable energy sources by storing excess energy produced by solar and wind energy. When these energy sources produce excess energy, instead of being wasted, it can be stored, then released at times of high demand or a grid failure. This is a highly effective solution to the problem of unreliable renewable energy threatening grid instability.
The battery storage market is growing rapidly, driven by trends like the rise of electric trucks and personal EVs, the renewable energy transition, and falling battery prices. BloombergNEF predicts that the energy storage market will grow 15-fold between 2021 and 2030 to reach a global total of 411 gigawatts of storage compared to the 27GWh of storage that was available at the end of 2021.
Exciting technological developments hold the promise of further efficiencies being unlocked in battery storage. Sodium-ion batteries are being touted as the next big thing in energy storage. Currently valued at USD 12.41 billion, the sodium-ion battery market is anticipated to grow by 11.7% from 2024 to 2030. Although at a much earlier stage of development than lithium-ion batteries, sodium-ion batteries use far more abundant materials to create, giving them the potential to be cheaper in the long-term, are safer and are more resistant to extreme temperatures. Sodium-ion batteries can act as a price hedge against too high lithium prices and therefore derisk the further growth of the battery market.
However, while some areas are thriving, much of the battery ecosystem needs additional funding. Battery management software is key to making batteries more predictable, efficient and safe, and should not be overlooked. Solutions to increase battery sustainability are also key. While electric trucks produce no tailpipe emissions and can be run on renewable energy through the grid, recycling the batteries that power these trucks is important and will grow strongly in the coming years.
Clearly, the opportunities available in the battery industry are many. With legislation increasing pressure to accelerate the energy transition and new technologies unlocking greater benefits in batteries - now is a good time to invest.
EnBW focuses on hardware infrastructure investments, while ENV specializes in digital solutions to enable these rollouts.
In the e-truck charging sector, depot fleet charging is a growing area of interest. Two key use cases stand out:
- Optimising depot fleet charging connected to energy management systems of the depot
- Optimizing depot fleet charging for fleet management and cost efficiency, including route optimization
If you have a solution in EV charging infrastructure, battery management software, or another e-mobility innovation that requires funding, we’d love to hear from you.