A global analysis of solar car performance

Do you want to test your team's newly built solar car against other cars globally? Do you want access to an abundance of raw solar car data to analyse, compare and interpret?

The 2021 Bridgestone World Solar Challenge Telemetry Challenge has been designed to allow for driving, testing and comparison of solar cars in the absence of a physical Bridgestone World Solar Challenge.

The telemetry challenge will also allow teams and the wider community to engage with submitted solar car data, practicing and experimenting with analysis methods and presentation. This challenge provides a rare opportunity for solar car enthusiasts to receive access to exclusive solar car data.

The success of the Telemetry Challenge and its method for data collection will be considered for potential future Bridgestone World Solar Challenge applications.

The Challenge

Registered teams are invited to submit data collected via the driving of their solar cars within specific sessions, which will be viewed and accessed by registered Analysts. Analysts will be invited to assess, display, and comment on the data and its subsets for the sake of global knowledge sharing and scientific investigation.

The data submission period will be open for two months, and practice analysis will take place over a period of one month ahead of a live simultaneous playback of all submitted data for comparison and concurrent analysis over a period of two days.


Registrations for Teams and Analysts open:
9am Friday, 4th June 2021 ACST

Team data submission available:
9am Wednesday, 1st September 2021 ACST

Analyst access to data portal available:
9am Friday, 1st October 2021 ACST

Live data playback and analysis period:
26-28th October 2021 ACDT

How to Get Involved

Solar Car Teams

Participating teams will benefit from the opportunity to compare solar car output data against one another in a friendly data collection experiment. There will be no winner - only the opportunity to display the hard work your team has committed to building your solar car and test its efficiencies.

Entry Criteria

Teams may enter a solar car into the Telemetry Challenge that meets one of the following criteria:

  1. Solar cars designed for the 2021 Bridgestone World Solar Challenge
  2. Solar cars that have participated in past Bridgestone World Solar Challenges
  3. Solar cars that have participated in a past recognised solar car challenge (to be assessed on an individual basis)

This criteria not only recognises the work completed to build solar cars in 2021, but also recognises and welcomes the participation of teams who did not register for the 2021 Bridgestone World Solar Challenge or who have never participated in the Bridgestone World Solar Challenge.

Teams must provide a photograph of their solar car and details including:

  • event participation history
  • class (Challenger or Cruiser)
  • number of seats (Cruiser)
  • dimensions
  • number of wheels and wheel layout
  • solar collector type, area and nominal power
  • energy storage type and capacity.

These details will be published on the Bridgestone World Solar Challenge website.

Registrations will be accepted via the Bridgestone World Solar Challenge website from Friday 4th June 2021.

The Challenge

Each team is responsible for locating a suitable track on which to drive. Teams are permitted to submit data collected through participation in other recognised solar car challenges.

Teams must drive their cars across two days and submit data collected whilst driving and charging at 60 second intervals to the Telemetry Challenge database between 1st September 2021 and 25th October 2021. Access to the database for data submission will only be available to registered teams.

Teams must submit data collected over two days:

Day 1: Drive for at least 5 hours and at most 9 hours (car may then be recharged using only the car’s solar collector)
Day 2: Drive for at least 5 hours and at most 9 hours

There will be no restrictions to how many times you may stop for driver changes.

Required Data

Teams must collect the following data at 60 second intervals:

  • team identifier
  • timestamp
  • longitude and latitude (decimal degrees)
  • altitude (metres)
  • cumulative distance travelled (metres)
  • cumulative energy from solar collector (joules)
  • cumulative energy from battery (joules)
  • cumulative energy from external sources (joules, measured at the input to the charger).

The submission of following data is optional (as is any other information you deem interesting to the community):

  • battery voltage (volts)
  • battery current (amperes)

Required data formats and structure will be supplied upon registration.


The Telemetry Challenge provides a rare and unique opportunity for members of the public to access solar car performance data. Solar car enthusiasts will have the opportunity to analyse solar car data output, compare performance, make commentary on data subsets and discuss with like-minded individuals through an exclusive forum.

Entry Criteria

Any individual or team may register as an Analyst.

Analysts must provide a brief description of their team/self. These details will be published on the Bridgestone World Solar Challenge website.

Registrations will be accepted via the Bridgestone World Solar Challenge website from Friday 4th June 2021.

The Challenge

Registered Analysts will gain access to the database from Friday 1st October. Analysts may then use test data to generate reports until Monday 26th October. This period will allow for experimentation and practice ahead of the live data playback.

A live data playback will take place between the 26-28 October 2021 during which all solar cars' submitted data will be played concurrently. Analysts are invited to assess, compare and comment on the data output in real time, comparing the data across cars as it plays simultaneously.

A summary of registered Analyst's commentary will be provided to the general public across the three days by Bridgestone World Solar Challenge Scientific Faculty members.


The general public will be invited to read summaries of the data analysis taking place within the live playback between 26-28 October 2021 via blog articles on the Bridgestone World Solar Challenge website written by members of our Scientific Faculty.