EV drivetrain and power systems specialist Equipmake has unveiled a new product that strays quite a bit from its electric double-decker buses we’ve covered in the past. Today, the company unveiled the HPM-400 – an advanced high power, short duration electric motor designed for applications in space and the marine segment. This thing is small, but mighty. Check it out.
Equipmake is one of the industry leaders in ultra-high performance electric motors with over two decades of experience specifically developing electric powertrains. Its technology currently ranges from complete EV drive trains like those found in London Buses, to ultra-fast electric power systems.
In recent years, Equipmake has expanded well beyond buses (and Earth) by developing electrified technologies for the aerospace sector. It currently provides advanced electric motors to rockets developed by Gilmour Space Technologies in Australia.
In fact, Equipmake’s latest electric motor unveiled today was originally designed as a high-performance rocket fuel pump for Gilmour in its Eris rocket. Its design allows for multiple applications, however, including as an electric motor for the marine segment and pointed out by Equipmake today.
Left: HMP-400 electric motor, Right: the inverter / Credit: Equipmake
Equipmake’s new electric motor perfect for marine, space
The company officially unveiled the HPM-400 electric motor today, showcasing its max speed of 20,000 rpm, peak power of 400 kW, and maximum torque of 250 Nm – all packed into a mere 40 kg (88 lbs) of mass including its silicon carbide inverter (seen above).
The electric motor debuted during the Future Propulsion Conference in Solihull, UK and although it was originally specificied as a rocket fuel pump, its clever design has plenty more to offer in other sectors like marine and aerospace. Equipmake CEO Ian Foley elaborated:
Because of its original intention for use as a rocket fuel pump, the HPM-400 features several novel innovations over conventional motor/inverters, making it ideal for use in high-performance space, aerospace and marine applications.
Firstly, the complete package is ultra-lightweight and capable of withstanding incredible acceleration. Secondly, when an inverter must operate in a vacuum, it needs to be high voltage, because lots of power is required.
HPM-400 keeps air pressure inside and has been completely redesigned mechanically to withstand the pressure from within when it goes from atmosphere into a vacuum. That has resulted in a super compact cylindrical package – conventional inverters being square – with a carbon fiber shell to keep pressure in and weight down. It all adds up to an advanced high power, low weight motor/inverter that’s at home in space, air or water.
Where this new electric motor might fit in the marine industry or in aerospace technology is yet to be seen, but trust that representatives in those sectors have eyes on the HPM-400 in Solihull and are already brainstorming where its ultra-light, energy dense performance can best be utilized.
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Today was the official start of racing at the Electrek Formula Sun Grand Prix 2025! There was a tremendous energy (and heat) on the ground at NCM Motorsports Park as nearly a dozen teams took to the track. Currently, as of writing, Stanford is ranked #1 in the SOV (Single-Occupant Vehicle) class with 68 registered laps. However, the fastest lap so far belongs to UC Berkeley, which clocked a 4:45 on the 3.15-mile track. That’s an average speed of just under 40 mph on nothing but solar energy. Not bad!
In the MOV (Multi-Occupant Vehicle) class, Polytechnique Montréal is narrowly ahead of Appalachian State by just 4 laps. At last year’s formula sun race, Polytechnique Montréal took first place overall in this class, and the team hopes to repeat that success. It’s still too early for prediction though, and anything can happen between now and the final day of racing on Saturday.
Congrats to the teams that made it on track today. We look forward to seeing even more out there tomorrow. In the meantime, here are some shots from today via the event’s wonderful photographer Cora Kennedy.
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The numbers are in and they are all bad for Tesla fans – the company sold just 5,000 Cybertruck models in Q4 of 2025, and built some 30% more “other” vehicles than it delivered. It just gets worse and worse, on today’s tension-building episode of Quick Charge!
We’ve also got day 1 coverage of the 2025 Electrek Formula Sun Grand Prix, reports that the Tesla Optimus program is in chaos after its chief engineer jumps ship, and a look ahead at the fresh new Hyundai IONIQ 2 set to bow early next year, thanks to some battery specs from the Kia EV2.
New episodes of Quick Charge are recorded, usually, Monday through Thursday (and sometimes Sunday). We’ll be posting bonus audio content from time to time as well, so be sure to follow and subscribe so you don’t miss a minute of Electrek’s high-voltage daily news.
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Tesla has launched its new Oasis Supercharger, the long-promised EV charging station of the future, with a solar farm and off-grid batteries.
Early in the deployment of the Supercharger network, Tesla promised to add solar arrays and batteries to the Supercharger stations, and CEO Elon Musk even said that most stations would be able to operate off-grid.
While Tesla did add solar and batteries to a few stations, the vast majority of them don’t have their own power system or have only minimal solar canopies.
Back in 2016, I asked Musk about this, and he said that it would now happen as Tesla had the “pieces now in place” with Supercharger V3, Powerpack V2, and SolarCity:
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All of these pieces have been in place for years, and Tesla has now discontinued the Powerpack in favor of the Megapack. The Supercharger network is also transitioning to V4 stations.
Yet, solar and battery deployment haven’t accelerated much in the decade since Musk made that comment, but it is finally happening.
Tesla has now unveiled the project and turned on most of the Supercharger stalls:
The project consists of 168 chargers, with half of them currently operational, making it one of the largest Supercharger stations in the world. However, that’s not even the most notable aspect of it.
The station is equipped with 11 MW of ground-mounted solar panels and canopies, spanning 30 acres of land, and 10 Tesla Megapacks with a total energy storage capacity of 39 MWh.
It can be operated off-grid, which is the case right now, according to Tesla.
With off-grid operations, Tesla was about to bring 84 stalls online just in time for the Fourth of July travel weekend. The rest of the stalls and a lounge are going to open later this year.
Electrek’s Take
This is awesome. A bit late, but awesome. This is what charging stations should be like: fully powered by renewable energy.
Unfortunately, it will be much harder to open those stations in the future due to legislation that Trump and the Republican Party have just passed, which removes incentives for solar and energy storage, adds taxes on them, and removes incentives to build batteries – all things that have helped Tesla considerably over the last few years.
The US is likely going to have a few tough years for EV adoption and renewable energy deployment.
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