Our purpose is to drive the transformation to a more sustainable world with a tangible and inspiring experience for tomorrow’s creative minds. The task is to design build and drive a manned electrified rail vehicle. The most energy efficient vehicle wins.

Rules 2021


The competition is open to teams from colleges and universities. Registration is made to project- and competition leader Lars Gustavsson via letter or e-mail no later than January 15, 2021. The number of participants for 2021 is set at a maximum of 15 teams, which means that the first 15 registered teams are guaranteed to be able to participate. In addition to these 15 teams, the competition management has the right to give a "wild card" to 2 more teams.

Participation fee

The participation fee is 2,000 Swedish kronor per team. The fee is invoiced at the same time as a confirmation of the registration is sent to the team. Payment must be made within 30 days for the registration to remain valid. We pay back the registration fee to schools that have withdrawn their registration no later than January 31, 2021. In connection with the registration, you must state an invoice address and an invoice reference.

Prizes from the organiser

First prize is SEK 10,000 and is awarded to the team that uses the least energy. In addition, each team that breaks the current competition record from previous years receives a bonus of SEK 2,000. The current competition record is 0.63 Wh/passenger km (Eximus III, Dalarna University 2018 and Eximus IV, Dalarna University 2019).

Prizes from partners

HHK (Hudiksvalls Hydraulikkluster) Innovation Award rewards curiosity and creativity and is awarded to the most interesting, fun and daring concept in Delsbo Electric. "For us, it is a way of saying thank you for inspiring students, the industry and society to create smarter and more sustainable transportation solutions," says cluster leader Paul Bogatir. The jury consists of technology and innovation experts within HHK. The winners are invited to visit HHK for some fun and inspiring days where they get to experience the best Hudiksvall has to offer in terms of food, entertainment and technology. The purpose is to create contacts and meetings that further stimulate the exchange of innovation and knowledge between universities, students and the industry.

Best project Delsbo Electric 2021 is an award that rewards the team that is judged to have completed its entire project in the best way. It includes such things as project management, revaluation in response to arisen situations, results in simulation and construction, documentation and more. The people who are part of the group that conducts the "Bonus assessment" with the students decide which team wins the prize. 

Team leaders

When registering, each team must state a team name, and appoint one contact person who is a teacher and one contact person who is a student. They are responsible for all communication between the team and the competition management.

Crew and vehicle use

The same school may enter several teams, but the team may not share the same vehicles or crew.

The competition

New records

The competition day for 2021 is the 28th of August. Due to the pandemic we've moved the competition from the last weekend in May. The challenge is to drive a distance of about 3.36 km with as little energy consumption as possible, expressed in Wh/passenger km. To arrive at the final result, the total energy consumption is divided by the number of passengers. The crew is accompanied by an inspector on a bicycle trolley.

In order for a new record to be approved, the average wind can not have been more than 2.0 m/s at the time of the run. However, teams that use less energy than the current competition record (see section "Prizes from the organiser") receive the promised bonus regardless of wind conditions. Teams that are judged by the competition management to have the ability to break world records are offered to run again. The record run is made in both directions of travel on the race track, so that any influence of the wind is eliminated. Results from the record attempts do not affect the competition result, but are counted as new records if they beat the current one.

The track

The track consists of a railway track with normal track gauge, nominally 1435 mm. There are track gauge variations. Road crossings, curves, uphill and downhill slopes and a railroad switch appear along the route. The entire distance must be travelled in one stretch without derailment or without any of the occupants touching the ground.

Delsbo Electric is so much more than winning. We know that there are many ingenious thoughts, solutions and lessons in the teams’ work that may not be showcased in the competition results. We would like to learn about them, highlight them and hopefully also give valuable feedback back to our competitors. Therefore, we hold a mandatory question and answer session and interview with the competing teams. What the students tell us about their work will be presented during the competition day at Delsbo Electric, and in our digital channels.

Bonus assessments will take place one team at a time according to a set schedule. The group that asks the questions consists of people from Delsbo Electric and from our partners. The representatives from HHK who participate then use the information as a basis for decisions to nominate this year's winner of the HHK Innovation Award.


All teams must be prepared to present their team and vehicle to a jury and to the public. All teams must be prepared to answer questions about how the project has been carried out and about how the team arrived at their solutions. 

Bonus assessment of vehicles and student work

Track profile

You will find a detailed track profile in the linked Excel documents below. The measurements were made by Stig-Göran Mårtensson, PhD, associate professor, and senior lecturer at the Land Surveying Programme at Gävle University on May 5, 2017.

Explanation data_Banprofil_Delsbo Electric_190409 >>

Delsbo Electric banprofil_170503-1 >>

Delsbo Electric banprofil_170503-2 >>

Delsbo Electric banprofil_170503-3 >>

Free space

According to the standard for the design of the rails, a small free space is guaranteed only on the inside of the rails for steering (see regulation BVF 586.20). However, traffic with bicycle trolleys on the route has created a gap of a few millimetres also on the outside of the rail head.

Regulation BVF 586.20, Free space along the track. Figure 2. Vehicle profile F [mm]


The vehicle must be fitted with a brake and be designed not to derail. Drivers and passengers must be able to get in and out of the vehicle without outside assistance. All occupants must travel seated with a backrest. By sitting is meant that most of the weight is distributed onto the buttocks. The backrest must have a slope between 60 and 90 degrees and a minimum height of at least 35 cm.

Delsbo Electric

Approved slope for the backrest is within the green range.

Safety must be such that no personal injuries are expected to occur in the event of heavy braking, breakdown or derailment. The vehicle must have a floor or net floor that prevents passengers from putting down a foot or arm and getting stuck on the ground or railway sleepers. The vehicle must be equipped with protection so that fingers cannot get into spinning wheels and spokes, for example during braking.

The vehicle must be operated exclusively with electrical energy from a voltage source with a voltage of 6-48V and a maximum instantaneous power consumption of 20 A. Feedback of braking energy is allowed, which means that only net energy consumption is counted. The brake energy must be fed back through the junction box to the battery.

After the registration fee has been posted, the team will receive a mount for our measuring unit. The mount contains wiring and fuse so that it is easy to mount the measuring unit in the vehicle. The measuring unit is of dimensions 24 cm x 17 cm x 11 cm, and must be mounted on the vehicle between the battery and the drive system. All energy consumed by the drive system of the vehicle must pass through the measuring unit. During the competition, we use our own calibrated measuring unit. As such, the mount must be positioned so that the measuring unit is easy to insert into and remove from the vehicle.

It may prove advantageous to have your own measuring unit during development and test driving of the vehicle, and any schools interested are welcome to buy their own from us.

Delsbo Electric
Delsbo Electric

Driver / passengers

Each vehicle must be manned by 1 - 6 people. The requirement for the passengers' total minimum weight varies with the number of passengers. If 6 people are riding, they must weigh a total of at least 300 kg, including clothes. If 5 people are riding, they must weigh a total of at least 250 kg, including clothes. For 4 people, 200 kg applies, for 3 people, 150 kg applies, for 2 people, 100 kg applies, and for one passenger, 50 kg applies. Weighing in takes place in the morning on the day of the competition. Passengers must be sober and not under the influence of drugs.

Up until 2019 we have assisted the team with light passengers in the form of children from town who enjoy the adventure of riding along. Due to Covid-19, we will replace the children with weights during the competition on October 17, 2020. We will later make a decision on whether to allow children as passengers again or whether we will continue to use weights. 

Competition race

The vehicle starts from a standstill and must maintain an average speed of between 10 -15 km/h during the race. The crew must not touch the ground or the tracks while driving. The vehicle must stop and stand completely still within 20 metres from the finish line.

Safety check of the vehicles on Thursday, May 27 is mandatory

All teams are expected to arrive at Delsbo station with their vehicles no later than 12:00 on Thursday, May 27. The vehicles are checked and approved. Competition management will disqualify vehicles that do not meet the set requirements. If the assessment shows that the vehicle does not meet the requirements, you have the opportunity for an additional inspection after you have rectified the deficiencies. Feel free to contact us before, and feel free to ask questions if you are unsure of your design solutions. You may not test drive the race track before your vehicle has been safety checked.

Test driving the race track before start is mandatory

Before start, each team must have tested the entire competition route from start to finish without stopping or without having to touch the ground. You have access to the track after a security check on Thursday, May 28, and up until one and a half hours before the first start on Saturday, May 30. You can borrow weights from us if you do not have six people for the test run.


The competition route crosses a busy road. We will review what applies in terms of road guards and safety prior to you driving on the track.

All teams live at Delsbo camping and eat breakfast, lunch and dinner at Delsbo station

Naturally, you choose where you live and where you eat, but we think it is important to meet and have fun together. We have booked cabins and caravan spots at Delsbo camping, which is located a five minute walk from Delsbo station. You have the opportunity to eat all your meals at Delsbo station café and at a discounted price. Book your accommodation and meals through us. More details about costs and times are to come.

The gala dinner takes place in the evening after the competition

We meet up around 18:00. During the dinner, we sum up Delsbo Electric 2021 and hand out trophies, the HHK Innovation Award and Best project Delsbo Electric 2021. When dinner is finished, we will party in the warehouse for as long as we want :) The dinner and subsequent party are adapted to current recommendations for Covid-19.

It is forbidden to ride on the competition route between two months before the competition and two days before the competition. 

It offers advantages to be familiar with and to adapt the driving to the profile of the track. To give all teams the same conditions, regardless of where the school is located, it will not be allowed in 2021 to drive the 3.36 km stretch of the Dellenbanan with racing vehicles between March 29 and May 26. The rest of the Dellenbanan with tracks and railroad switches is open for test driving all year round. Detailed data for simulation of driving on the competition route can be found under the section Track profile >>

However, you are more than welcome to use the bicycle trolley on the competition route whenever you want. Contact us if you want to cycle!

Test drive of railroad switch in Delsbo

You are welcome to test drive the railroad switch in the eastern end of Delsbo railway yard (outside the competition route) whenever you want during the year. Let us know in advance.


To avoid derailment, a stable and well-thought-out steering toward the rails is required. Note that 3-wheel vehicles with steering only towards the inside of the rail do not normally travel stably, but can rotate out of track as the track width varies slightly along the distance. Bicycle trolleys are 3-wheeled and normally have a narrow and low guide flange that also guides on the outside of one rail. Since the track is located on a real railway, there are derailment protection, vegetation, gravel, electrical connections with associated bolts to the rails, rail nails and road crossings, etc. that can act as an obstacle for an incorrectly designed vehicle.
To avoid derailment, we strongly recommend that the vehicle be tested on a railway track well in advance of the race. The test can, for example, be done on a disused industrial track with a railroad switch and a road crossing.

Delsbo Electric

Railroad switch

There will be a switch that must be passed along the track. The vehicle must travel straight ahead through the switch along the right unbroken rail. That means that the vehicle’s wheels must be designed in a way that it will not thwart on the left rail.


The pictures show the standard model’s switch that must be passed during competition.

Values from the measuring unit will be forwarded via a LoRaWan antenna, and therefore we need to mount a unit with good radio contact on the vehicle. The antenna unit is about 15 x 10 cm and weighs about 200 grams. In order for us to be able to attach the unit, you need to prepare a hole pattern on a rigid surface according to the picture. It also shows the free space needed around the antenna. More precise information about how to ideally integrate the antenna into the vehicle's design can be gained in dialogue with the competition management.

Delsbo Electric

Our purpose is to drive the transformation to a more sustainable world - through a tangible and inspiring experience for tomorrow’s creative minds.

The task is to design build and drive a manned electrified rail vehicle. The most energy efficient vehicle wins.

Contact Information

Project and Competition Manager

Lars Gustavsson


+46 (0)70 - 229 55 44

Technical Manager

Civ.ing. Gustav Bohlin
+46 (0)70 - 293 60 07

Delsbo Electric

c/o Dellenbanans Vänner
Stationsgatan 9
824 71 Delsbo

SE - 824 71 Delsbo


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Our purpose is to drive the transformation to a more sustainable world with a tangible and inspiring experience for tomorrow’s creative minds.

The task is to design build and drive a manned electrified rail vehicle. The most energy efficient vehicle wins.