Portuguese trains to save power using Norwegian Technology

Several countries now use Norwegian tech which brings impressive savings for both climate and society, with Portugal next to join.

If the whole of Europe were to take on the Norwegian technology, a collective saving of power comparable to the consumption of 35 million households could be made.

In Norway, transport is the cause of 1/3rd of climate emissions and of this railway is just 0.3% which demonstrates that trains use the least energy per passenger for all modes of transport. Despite this fact, Bane NOR is still working to create an even more climate-friendly and sustainable railway and an important part of this is Erex, which is a power-saving system which can cut around 30% of the power used by trains.

Dyre Martin Gulbrandsen, Head of Energy Trading at Bane NOR, said:

“Thanks to this system, trains now consume only 75 per cent of the energy they previously used. This leads to lower energy bills for train operators and saves the environment from unnecessary power consumption. A real win-win situation,”

The innovative system has been developed and is operated in Oslo by Bane NOR who is also a leader in demonstrating environmentally friendly approaches to their European neighbours.

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Dyre Martin Gulbrandsen goes on to explain:

“We consider collaboration and the sharing of knowledge to be crucial and we are happy to share the technology with any country wishing to partner with us. We have therefore focused on a major joint effort in which we learn from one another and share costs. We are excited that Portugal will now be joining the effort,”

Nine countries have now joined up and are using the technology, these are Belgium, Denmark, Finland, Luxembourg, the Netherlands, Spain, Switzerland, Sweden and Norway. Portugal is now coming on board and has become a test partner and are heading towards a full partnership. As part of the test phase, Portugal will learn the system whilst gaining experience from the other members.

Climate benefits from the system are made by measuring and monitoring the energy usage of trains and this can be carried out with data collected by Erex. Train operators can analyse where and when they generate and use the most power and this details how train drivers should drive in order to minimise consumption.

Dyre Martin Gulbrandsen explains further:

“Modern trains work in the same way as an electric car. The train generates power when braking and consumes more power when it needs energy to accelerate,”

Energy savings can be made during braking and by train drivers altering their driving style to use less power.

Dyre Martin Gulbrandsen also says :

“We find that certain train drivers make consumption savings of up to 30 per cent. This energy is fed back to the electricity grid via the catenary line and can be sold on to other trains or consumers like you and me. In the past, much of this energy was lost because of heating and braking,”

“This is crucial for the climate and for the railway becoming even more competitive,”

About Erex:

Erex is an IT system that uses advanced energy-metering systems on trains.
Was created by Bane NOR’s predecessor, the Norwegian National Rail Administration, in 2003. The system is currently developed and operated by Bane NOR.
Enables rail operators to understand their energy consumption so that they can reduce both consumption and costs.
The information from Erex is used, as source, for training train drivers so that they can develop an efficient and energy-friendly driving style from the very beginning.
The system leads to a cut of up to 25-30 per cent in train energy consumption.
In Europe, there are 7,000 trains using this technology.
Erex is owned by a collaboration between railway organisations in nine European countries: Switzerland, Spain, Belgium, the Netherlands, Luxembourg, Denmark, Finland, Sweden and Norway. This partnership is called Eress.
The EU requires all trains to have the chance to utilise this kind of savings technology. The Norwegian system, Erex, is the only one which has been fully developed according to EU regulation