Support & FAQ

We are here to help, below is answers to the most common questions that we get asked at Prohelion


Prohelion is a commercial spin off of TeamArrow (, which is Australia’s most successful Solar Electric Racing car team.  TeamArrow was founded by people with a background in developing commercial businesses and has become an development hub for high efficiency energy solutions.

Prohelion allows us to develop those technologies commercially.

We are developing a fully integrated mobile electric power solution based on our experience in solar electric vehicle racing.

Solar car racing is the most extreme form of high energy efficiency motorsports.  Vehicles in this category of racing can exceed 100kpm on the power consumed by a toaster.  This is achieved through heavy optimisation of the solar, battery, control systems and motors used to drive these vehicles.

This is our background and our products reflect that.

Solar electric vehicles are one example of where our technology makes sense, but there are many others.

If you are developing a vehicle that moves (most do!) then the power / weight ratio of your power system is critically important.  This has been well understood in petrol driven cars for over 100 years.

Prohelion is attempting to build the highest power to weight ratio energy solutions.  To do that we use the best batteries, ultra light weight materials (like carbon fibre) and high efficiency solar cells.

If you are building drones or electric aircraft, electric boats or electric cars, in fact anything that moves and uses power, then the technology we are developing is probably suitable for you.

In Australia (where we are based), 80% ~ 90% of the power we use comes from coal or gas.  If you are charging an electric car from the grid, then you have simply converted your petrol power car, in to a coal powered car.

One of the things we know from our 20 history of solar car racing is that in many situations, with high efficiency solar arrays you can generate and run vehicles on the sun alone, that’s a unique insight that we bring to the table when looking at vehicle power systems.


Short answer power to weight ratio coupled with durability.

We couple the highest efficiency silicon solar cells from Sunpower with Gorilla Glass from Corning to create a super high efficiency panel that is both strong and ultra light.

The solar cells on the roof of your house are probably around 13% to 15% efficiency.  The Sunpower cells that we use are 24.5% efficient so we are capturing almost twice as much power from the same surface area.  They are then encapsulated on to Gorilla Glass which is a light weight, high strength glass commonly used in mobile phones.

Our solar arrays are custom built and can be made in a range of sizes.  They are also able to be bent in two dimensional curves at the point of installation.  Being flexible the cells are able to be used in a range of applications that would not normally suit solar panels.   For example cells can be integrated in to the roof of your vehicle on to the wing of your aircraft or drone.

We use a specialist micro Maximum Power Point Tracker (MPPT) product that allows us to track the panels in small groups and get the maximum amount of available power.  This solution is typically integrated in with our custom electronics solution for the overall vehicle.


It’s basically a battery, or more precisely a set of hundreds of light weight high powered Lithium Ion batteries connected to form the power pack.

However, you can’t just connect up Lithium Ion batteries to make a battery solution, they have a nasty habit of catching on fire when you do that!  Rather our power pack also contains a Battery Management Unit (BMU), Cell Management Unit (CMU) and associated software, control systems, cooling systems and safety systems to control and monitor the solution.

Connecting batteries does not make a powerpack, there is a lot involved in getting this right.  Our Power Packs are full integrated with a particular focus on safety.

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