2G Shutdown in Rail: 2028 Deadline on the Horizon
The urgent need for Railway System Upgrades before the 2G Shutdown
Time is ticking for GSM/2G in Germany: Deutsche Telekom will completely switch off its 2G mobile network by the end of June 2028, and other carriers plan to retire GSM by 2030 at the latest. With all 3G networks already deactivated in 2021, 2G has been the last resort for many machine-to-machine applications – but not for much longer. For railway applications like onboard energy metering, this looming 2G sunset creates an urgent need to act: devices that today rely on GPRS/2G for data will lose connectivity once the network is turned off.
In particular, existing LEM TEMA4Tplus energy meter units – deployed on many trains – use the 2G network to transmit energy consumption data. If the shutdown proceeds as scheduled, these devices will no longer be able to send their measured values to ground servers (e.g. the DB Energy Server) – impacting energy billing and TSI compliance processes. The good news: LEM has already prepared a solution to keep your energy monitoring system future-proof and online.
Impact on Rail Systems (TEMA4Tplus and others)
For operators and fleet owners, the implication is clear: start planning now to upgrade and avoid your fleet going “dark” in terms of data. The TEMA4Tplus boxes have served well over the years, but their built-in 2G modem is reaching end-of-life because the network behind it will disappear. Without a timely replacement, your locomotives’ energy consumption data would stop being transmitted automatically after 2028 – forcing manual data collection or hurried installation of new comms hardware, which can be costly and disruptive. Moreover, current interoperability regulations (TSI) in the EU require that rolling stock is equipped with certified energy measurement systems that use up-to-date data transfer standards.
The solution: Retrofit your existing systems with TEMA4G – the direct successor to TEMA4Tplus. This ensures your energy meters maintain seamless connectivity into the 4G era. TEMA4G was purpose-built to make the transition as easy as possible for operators, and it is a like-for-like replacement in every important aspect.
TEMA4G – The Future-Proof Replacement for TEMA4Tplus
TEMA4G combines LEM’s proven EM4TII+ onboard energy meter with a modern 4G/LTE and GPS-enabled communication modem in one compact device.
For existing fleets, this means minimal retrofit effort, maximum benefit. Here are the key advantages of TEMA4G at a glance:
- Drop-in replacement: TEMA4G is mechanically and electrically 100% compatible with the previous TEMA4Tplus unit. It fits into the same mounting space, uses the same connectors, and seamlessly takes over the same function – true fit-form-function. Upgrading is typically a quick on-site swap, with no need to modify vehicle wiring or enclosures.
- 4G connectivity: With TEMA4G, energy metering now runs on the 4G network – making it future-proof. LTE provides widespread, fast data coverage. Even when GSM is shut down, your energy metering system can continue to send data via 4G. The result: higher data transmission speeds, better coverage, and long-term operational security for your metering devices.
- Meets current standards: TEMA4G is fully compliant with all relevant standards, and thus adheres to the latest TSI Loc&Pas (Locomotives and Passenger Rolling Stock) requirements for energy measurement. Integration into your existing infrastructure is seamless – the unit communicates effortlessly with the DB Energy Server for energy data collection and billing. In short, you’re investing in a solution that meets today’s and tomorrow’s regulatory demands.
In summary, TEMA4G provides a future-ready 4G energy metering solution that replaces your existing TEMA4Tplus installation one-to-one while also delivering technical upgrades. Your onboard energy measurement system remains interoperable, billing-accurate, and prepared for upcoming requirements in the rail sector.
Frequently Asked Questions about the TEMA4G Migration (FAQ)
Why should I replace my TEMA4Tplus now?
Because the 2G network shutdown (Telekom by 2028) will disable the communication of TEMA4Tplus devices. Upgrading early to TEMA4G ensures your energy meters can continuously transmit data and your vehicles stay in compliance with EU requirements. It also helps you avoid resource bottlenecks – the closer the shutdown gets, the more urgent (and expensive) last-minute solutions could become.
How difficult is the replacement process?
It’s very straightforward: TEMA4G is designed as a plug-and-play replacement. The unit shares the same dimensions and connections as TEMA4Tplus, meaning it can typically be installed and hooked up in just a few steps. Your existing current sensors and voltage sensors as well as antennas can be reused. Once installed, TEMA4G connects via 4G to the server – just finalize the configuration and the system is up and running. Downtime per vehicle is minimal.
Does TEMA4G meet all relevant standards (e.g. TSI Loc&Pas)?
Yes. TEMA4G builds on the EM4TII+ energy meter, which is certified to EN 50463:2017 and approved for use across Europe.
It thereby fulfils the requirements of the TSI Locomotives & Passenger Rolling Stock (Loc&Pas) for energy measurement – e.g. accurate measurement and recording of consumed/regenerated energy and standardized data transmission (Compiled Energy Billing Data as per EN 50463-4). You can deploy TEMA4G with confidence that it keeps you fully compliant.
How soon do I need to retrofit?
Our advice: begin planning as soon as possible. Even though 2028 sounds far off, experience shows that fleet-wide retrofits take time (procurement, installation, certification).
Don’t wait until potentially hundreds of meters need swapping all at once. An early move to TEMA4G gives you buffer and peace of mind.
What is the cost of upgrading and is there support available?
Investing in TEMA4G pays off by ensuring data communication and regulatory compliance. The exact cost depends on quantity and vehicle type – our sales team will be happy to provide a quote. LEM also supports your transition with technical info, installation guidelines, and after-sales service as needed to make the swap as smooth as possible.
Act Now – Plan Your Upgrade
Don’t wait until the shutdown is imminent – take proactive steps to keep your fleet ready for the future. With TEMA4G, you have the assurance of a compliant and efficient solution in place well before 2G becomes history.
Contact us today for more information, a consultation, or a personalized quote. Our team is ready to assist you with any questions about migrating from TEMA4Tplus to TEMA4G. You can also visit our website for technical data and product information on TEMA4G to get a detailed overview.