Diesel-Killing Locomotive Of The Future Runs On Solar Power
The creators of the solar-powered locomotive of the future were aiming to set a Guinness record for speed last weekend, and that is more than just your ordinary attention-getting stunt. Demonstrating the functionality of PV panels on rail cars could help set the stage for solar power to knock diesel fuel out of the railroad business. No word yet on the official results, but solar is beginning to wiggle its way into a field dominated by fossil fuel.
The Solar Train Of The Future Hits The Tracks, With Only Solar Power
When people say “solar train,” they usually mean a battery-powered train charged by solar panels parked in a solar farm, such as the UK’s Riding Sunbeams project. In other words, the solar power is there, but it is not actually along for the ride.
Placing solar panels on the roof of the train itself is a whole ‘nother kettle of fish. A cute retro solar train began ferrying passengers on a six-kilometer round trip route in Byron, Australia back in 2017, but that’s the main extent of the activity so far, at least in terms of powering entire trains with sunlight.
It’s possible that the Byron train could go faster and farther with more solar panels, but integrating rooftop panels into the train’s 1940s-era styling was a key consideration that limits its ability to soak up energy from the sun.
The team behind the record-aspiring Solar Train are under no such constraints. Aesthetics have been tossed aside in favor of function, and solar panels are just about all there is to the Solar Train in its current 42-foot long iteration. Aside from a small space for the driver and a couple of passengers, all of the rail car’s flat surface is taken up by solar panels.
The goal for 2022 is to engineer an 80-foot version that can reach a top speed of 65 miles per hour on raw solar power alone.
As for that whether or not the Solar Train made the record books last weekend, check back with the The Press-Democrat of Sonoma County, California. They covered a test run of the Solar Train last Friday and their story is loaded with interesting details about the self-funded labor-of-love project, so maybe they’ll do a followup after the official results roll in.
Who Hearts Solar Power For The Locomotive Of The Future?
The Solar Train began as a DIY project in 2016, and now some heavy hitters in the US railway business are eyeballing the action.
Solar Train’s website lists Northwestern Pacific and Sierra Railroad as supporters, along with American Systems Controls & Integration, Inc., Cal Poly, and something called robotcity.io.
Northwestern Pacific has undergone something of a transformation from its roots in the great age of the steam locomotion, back in 1869. The whole industry shifted into diesel by the 1930s, and in 2006 NWP embarked on a major renovation and expansion project in its California territory. The company began its modern era of service in 2011, right about the time when President Obama’s plans for climate action began to kick into gear.
The Obama Clean Power Plan got hung up in court, but meanwhile NWP kept expanding its network into Marin and Sonoma counties. While still relying on diesel, NWP touts the advantages of railways for freight transportation over diesel trucks.
“Railroads are a very efficient mode of transportation; steel wheels on steel rail give very little rolling resistance, therefor reducing overall fuel consumption, pollution, and greenhouse gasses. NWP takes this one step further by using low emission Tier 3 locomotives for goods movements along the hwy 101 corridor. Each railcar that NWP hauls can handle up to 220,000 pounds of payload, that’s more than 8 trucks off the busy highways and roads per railcar for each round trip!” NWP enthuses.
Interesting! They left out that bit about the labor advantage of railways over trucks. If and when the trucking industry shifts into battery electric and fuel cell technology, each truck is still going to need at least one driver, and the the truck driver shortage shows little sign of easing. Meanwhile, it’s a piece of cake for one engineer to manage a 100-car freight train, though rail safety regulators may have something to say about that.
Sierra Railroad & The Electric Train Of The Future
As of this writing NWP has not built much of a public profile in the clean power area, though positive press related to the Solar Train could convince the company to throw some clams into the innovation pot. NWP’s Sonoma County rail network has been hosting the train’s trial runs, and the activity will continue at least into 2022, when the Solar Train team will try for the 65 mph goal.
Sierra Railroad has staked out a somewhat more ambitious position. Last year the company nailed down a $4 million grant to build a “green” switcher locomotive powered by zero emission hydrogen fuel cells. That’s actually not very green at all, considering that the primary source of the global hydrogen supply is natural gas. This year, the California utility SoCalGas also hopped on board the project, which doesn’t exactly inspire confidence in a green makeover.
On the bright side, interest in the green hydrogen field is blowing up like a rocket to Mars. SoCalGas is among those dipping a toe in the power-to-gas field, which refers to systems that apply clean kilowatts from solar power, wind power, and other renewables to water, in order to release renewable hydrogen gas.
Here in the US, signs of a green makeover for the hydrogen economy are already brewing, and the activity is especially strong in sunny California and the sunny southwest, which could mean good things for solar developers.
In a couple of especially interesting developments in the western US, Texas is eyeballing a green hydrogen hub that leverages its considerable solar and wind assets, and Utah is helping to propel the natural gas-to-green-hydrogen turbine trend along with the hydrogen-as-storage model.
Onward & Upward For The Solar Powered Railway Of The Future
Meanwhile, solar power is already beginning to establish workhorse status in the railroad industry. One interesting example comes from the firm Herzog, which is pitching a solar-powered system for remotely unloading ballast cars, which are freight cars that can be unloaded by opening a vent at the bottom.
“During ballast distribution, our remotely operated hydraulically-powered doors provide easy opening and closing. The doors eliminate the need for manual manipulation/operation, and only a single operator is required for ballast distribution, increasing efficiency and safety for your employees,” Herzog explains.
The company Trina Solar also takes note that India has been deploying solar panels on trains to power fans and other equipment. While not replacing diesel entirely, the addition of solar power can make a significant difference.
“In India, the addition of solar PV panels to just one train is estimated to save 5,547 gallons of diesel every year, a savings equivalent to nearly $20,000. These panels do not yet propel the locomotive but merely power its fans, lights and comfort systems, underscoring the enormous opportunity to further curb operating expenses by switching to renewables,” says Trina.
Electrified railways have already made diesel fuel obsolete for many commuter lines, but there are still plenty of other opportunities for solar power to wiggle its way into the railways of the world.
Follow me on Twitter: @TinaMCasey.
Photo (screenshot): Solar power for a self-propelled rail car, courtesy of Solar Train.
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The Honda Ruckus has earned cult status thanks to its minimalist styling, exposed frame, and seemingly endless customizability. The scooter, also known in international markets as the Honda Zoomer, has spent years being seen as a blank canvas for scooter tuners, urban commuters, and anyone who just wanted something simple, small, and kind of weird to zip around town. A few years ago, Honda finally answered the call for an updated version by announcing and producing the “Zoomer e:”, which was an electric version of the Honda Ruckus. So where is it?
When Honda launched the all-electric version of the Ruckus, the Zoomer e:, back in 2023, many fans hoped it was only a matter of time before we saw it quietly glide onto U.S. streets.
But two years later, there’s still no sign of a stateside release, and no indication that Honda plans to change that anytime soon.
The Zoomer e: was first introduced in China in early 2023 alongside two other retro-inspired electrics: the Cub e: and Dax e:.
The Zoomer e: keeps the stripped-down, industrial look of the classic gas-powered Ruckus, but swaps the 49cc engine for a 400W rear hub motor and a 48V 24Ah battery (around 1.15 kWh).
It was originally given a top speed of a mere 25 km/h (15.5 mph) to keep it street legal as an electric bicycle in its first market of China, where it also came with functional but stubby pedals so riders could pretend it was actually pedalable.
The first version of the electric scooter claimed a range of up to 80–90 km (50–56 miles) from its removable lithium-ion battery, depending on conditions.
We’ve since seen the performance bumped up to 40 km/h (25 mph) top speeds when the scooter was introduced into the Philippines market, where the local L1B classification allowed for higher speeds. It’s fairly obvious that the performance can be software-tweaked by Honda depending on the market, though likely to a limit. To achieve speeds much higher than 25 mph, a motor and controller swap may be required, though neither would be complicated.
In other words, the electric Ruckus’ debut revealed an ultra-lightweight, street-legal runabout designed for countries with expansive low-speed e-bike laws. But in the U.S., these types of quasi-e-bikes that are actually scooters are few and far between. The same performance can be had from a $1,000 electric bicycle, and in fact, Class 3 e-bikes in the US can go nearly twice as fast as the original electric Ruckus.
So Honda obviously hasn’t been in a rush to bring its low-spec version of the bike to the US market, where it would be a slower and heavier competitor to the wide range of cheap imported electric bicycles. However, its iconic design and cultural legacy have kept enthusiasm up for riders who have managed to privately import their own models. One Redditor appears to have imported two Honda Zoomer e: models in parts to assemble in the US, while someone else posted a YouTube video of his completely assembled Honda Dax e: model that was launched along the Zoomer e:.
Despite clear consumer interest and a growing market for low-speed electric vehicles, as well as Honda’s own proven interest in growing its electric scooter market, the company hasn’t made any moves to release the Zoomer e: in the US. That’s not surprising since America still lacks a robust electric scooter culture (or even a gasoline scooter culture, for that matter), and anything motorcycle-shaped that doesn’t hit 30+ mph tends to get passed over by mainstream buyers.
But perhaps that could change one day. Technically, bringing the Zoomer e: to the US wouldn’t be a monumental task for Honda. The U.S. is a self-certify country, meaning Honda could design a version that meets federal vehicle safety standards, beef up the motor and controller for higher speeds, and sell it as either a Class 2/3 e-bike, or perhaps more appropriately, as a low-speed motorcycle with a top speed in the 35-45 mph range (55-70 km/h).
With the rise of micromobility, electrification, and growing frustration with car-centric cities, now might actually be the perfect time for a reborn electric Ruckus to hit US roads. But until Honda decides to take that step, American riders will have to keep dreaming – or start importing.
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BMW Motorrad’s futuristic electric scooter just got its first real refresh since beginning production in 2021. The BMW CE 04, already one of the most capable and stylish electric maxi-scooters on the market, now gets a set of upgraded trim options, new aesthetic touches, and a more robust list of features that aim to make this urban commuter even more appealing to riders looking for serious electric performance on two wheels.
The BMW CE 04 has always stood out for its sci-fi styling and high-performance drivetrain. It’s built on a mid-mounted liquid-cooled motor that puts out 31 kW (42 hp) and 62 Nm of torque. That’s enough to rocket the scooter from 0 to 50 km/h (31 mph) in just 2.6 seconds – quite fast for anything with a step-through frame.
The top speed is electronically limited to 120 km/h (75 mph), making it perfectly capable for city riding and fast enough to hold its own on highway stretches. Range is rated at 130 km (81 miles) on the WMTC cycle, thanks to the 8.9 kWh battery pack tucked low in the frame.
But while the core performance hasn’t changed, BMW’s 2025 update focuses on refining the package and giving riders more options to tailor the scooter to their taste. The new CE 04 is available in three trims: Basic, Avantgarde, and Exclusive.
The Basic trim keeps things clean and classic with a Lightwhite paint scheme and a clear windshield. It’s subtle, sleek, and very much in line with the CE 04’s clean-lined aesthetic. The Avantgarde model adds a splash of color with a Gravity Blue main body and bright São Paulo Yellow accents, along with a dark windshield and a laser-engraved rim. The top-shelf Exclusive trim is where things get fancy, with a premium Spacesilver metallic paint job, upgraded wind protection, heated grips, a luxury embroidered seat, and its own unique engraved rim treatment.
There are also a few new tech upgrades baked into the options list. Riders can now spec a 6.9 kW quick charger that reduces the 0–80% charge time to just 45 minutes (down from nearly 4 hours with the standard 2.3 kW onboard charger). Tire pressure monitoring, a center stand, and BMW’s “Headlight Pro” adaptive lighting system are also available as add-ons, along with an emergency eCall system and Dynamic Traction Control.
BMW has kept the core riding components in place: a steel-tube chassis, 15-inch wheels, Bosch ABS (with optional ABS Pro), and the impressive 10.25” TFT display with integrated navigation and smartphone connectivity. The under-seat storage still swallows a full-face helmet, and the long, low frame design means the scooter looks like something out of Blade Runner but rides like a luxury commuter.
With these updates, BMW seems to be further cementing the CE 04’s role at the high end of the electric scooter market. It’s not cheap, starting around €12,000 in Europe and around US $12,500 in the US, with prices going up from there depending on configuration. However, the maxi-scooter delivers real motorcycle-grade performance in a package that’s easier to live with for daily riders.
Electrek’s Take
I believe that the CE 04’s biggest strength has always been that it’s not trying to be a toy or a gimmick. It’s a real vehicle. Sure, it’s futuristic and funky looking, but it delivers on its promises. And in a market that’s still surprisingly sparse when it comes to premium electric scooters, BMW has had the lane mostly to itself. That may not last forever, though. LiveWire, Harley-Davidson’s electric spin-off brand, has teased plans for a maxi-scooter-style urban electric vehicle in the coming years, but as of now, it remains something of an undefined future plan.
Meanwhile, BMW is delivering not just a concept bike but a mature, well-equipped, and ready-to-ride electric scooter that keeps improving. For riders who want something faster and more capable than a Class 3 e-bike but aren’t ready to jump to a full-size electric motorcycle, the CE 04 hits a sweet spot. It delivers the performance and capability of a commuter e-motorcycle, yet with the approachability of a scooter. And with these new trims and upgrades, it’s doing it with even more style.
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