I asked questions of two Army generals as to the viability of military EVs in the field. They spoke of the challenges of recharging in the field, considering factors such as solar charging and the use of hybrid vehicles.
I was told that the technology was not there yet but the hope was that technology would have matured by 2030-35 when the fleet of vehicles may be transformed to EV status and technological problems be overcome.
Transcript
Chair: Senator Roberts?
Senator Roberts: My questions are to do with the Army’s electric vehicles. Since the publicly released information of electric vehicle conversion of the Australian designed and built Bushmaster, has the Australian Army progressed to test the operational feasibility of other Australian electric military vehicles in the field? I understand from Minister Conroy, who gave us a crossbencher briefing, that this is at concept stage at the moment, nothing more.
Lt Gen. Stuart: I’ll begin, and then I’ll hand to my colleague Major General Vagg for any further comments. The concept demonstrator that you referred to was part of our power and energy work, which involves some studies to understand how we can use alternative sources of fuel (1) to ensure an operational capability and (2) to reduce the logistic footprint that is created by bulk fuel. There are a couple of important points to note. Firstly, we were able to produce an electric Bushmaster, but that was to really test the parameters of power generation and how that work would translate into the design of the vehicle and to really test the
art of the possible.
Of course, the operating environment would probably require us to have a hybrid approach, similar to a hybrid passenger vehicle, with both solar panels and also the fuel that would be required. So it is on a path of development to determine how we can continue to operate vehicles and reduce the logistics footprint and, obviously, the output of those vehicles.
Senator Roberts: What progress has been made? What stage are you at right now?
Major Gen. Vagg: As the chief has alluded to, we produced the capability demonstrator with Thales. One of the limitations is power generation and storage and the distribution — which I think you’d appreciate —
Senator Roberts: Easy to understand that.
Major Gen. Vagg: for operational use. We’ve got a number of studies underway to look at power generation and electrification of various sizes of wheeled and tracked vehicles. Those studies are indicating that the technology won’t be in a mature state until about 2030. We have plans from 2035 onwards to look at how we’ll transition the broader Army fleet as we move across.
Senator Roberts: So the time frame is you’re hoping to put something into operation by 2030.
Major Gen. Vagg: That’s the time when the studies are indicating the technology will be mature enough so we can field it as an operational capability.
Senator Roberts: So at the moment there’s no real understanding based on anything concrete—it’s just studies at the moment. You haven’t got a plan or deadline or date.
Major Gen. Vagg: As I said, from about 2035 we’ve got plans to look at starting to convert Army’s fleets across to electric vehicles.
Senator Roberts: What are your findings on energy density? One of the advantages of hydrocarbon fuels like petrol and diesel and gas is that they have very high energy density—not as high as nuclear, but very high energy density. Sunlight is incredibly low.
Major Gen. Vagg: That’s a good observation. To inform some of that work, we’ve got trials with electric vehicles that are occurring this year. We have 40 electric vehicles—civilian—that are operating in the ACT. From 2024 we’ll look at a series of small, light commercial vehicles that will use hydrogen cells. We’ll use those capability demonstrators to inform further work and how we’ll look to operationalise that.
Senator Roberts: To what stage has the thinking gotten in terms of replacing the current diesel powered vehicles?
Major Gen. Vagg: Again, I go back to my first point. Looking at the levels of maturity for those technologies, we don’t expect that to mature to where we can deploy it as a legitimate operational capability until about 2030.
Senator Roberts: Is there any way in which our concrete operational plans assume electric vehicles, say, by 2035? Are we going to be reliant upon these things being developed?
Major Gen. Vagg: I don’t think we’d be reliant on them being developed, but that’s a goal where we’ll look to do that transition.
Senator Roberts: So it’s a goal, not a plan yet.
Lt Gen. Stuart: If I can describe the approach, there are a whole range of emerging technologies that we need to understand, and then we need to test their application to the set of tasks that we need to provide for the integrated force. In some cases, I expect, those will be successful; in other cases they may not be. What we want is to be informed and take advantage of the developments in technology as they’re developing. We work with both academia and industry to explore the art of the possible. We’re not making any presuppositions about exactly when, because we just don’t have the evidence or the data to support exactly where that technology may be. What we’re working on at the moment in the case of electrification is that we think, based on the advice we’ve received, that technology—noting your point about energy density and the requirement to operate vehicles in operational situations—is probably toward the end of this decade. That is our estimation based on the work we’ve done so far and the advice from experts that we’ve been working with.
Senator Roberts: Have you deployed the vehicle in the wet or in the north or in the desert or put it through any arduous tests, or is it still very much a concept?
Major Gen. Vagg: It’s still very much a concept.
Senator Roberts: What about battery charging? You mentioned that as one of your challenges. I think, from memory, on Friday afternoon the Minister for Defence Industry, Mr Conroy, said that you had some concepts for fast charging. Is that correct?
Lt Gen. Stuart: We’ll have to take that one on notice. As I say, as part of the power and energy work we’re doing, we’re looking at a whole range of things, which include both power generation and power storage—which includes battery technology.
Senator Roberts: What would power generation involve—what sort of concept?
Lt Gen. Stuart: Solar, hybrid engines—
Senator Roberts: Solar panels?
Lt Gen. Stuart: and those sorts of things.
Senator Roberts: Hybrid using hydrocarbon fuelled engines?
Lt Gen. Stuart: Yes.
Senator Roberts: You’re not far enough advanced, then, to discuss the recharging question for field operation?
Major Gen. Vagg: No. As I alluded to before, we’re still looking at how that technology matures. That’s one of the principal challenges that we need to overcome.
Senator Roberts: What’s your early gut feeling? Much of the science on this and the application of the science on these technologies is still hypothetical—wish.
Lt Gen. Stuart: I don’t think my gut feeling is particularly relevant. We’ll follow the science and what can be demonstrated and how that can be applied to the work that we are required to do. But we think it makes a
lot of sense to be understanding and to be working with experts on how we can apply new and emerging technologies to the business of Army in this instance.
Senator Roberts: I’m reassured now. Initially, I wondered if we were going to be dependent on something happening in the next few years, and I had visions of extension cords all across North Queensland and the Territory. That has put that to rest. Thank you very much.
