Jason Momoa's electrified collection

Electrogenic

Hollywood loves a restomod. But Jason Momoa may be taking the concept further than almost anyone else.

The actor, producer, motorcycle obsessive, and self-described off-grid enthusiast has spent the past few years quietly building a collection of electrified vintage machines that sit somewhere between a preservation project, an engineering experiment, and an environmental statement. His latest creations—revealed in the second season of On the Roam—include rare post-war Land Rovers, century-old Harley-Davidsons, and even an off-grid expedition trailer capable of powering wilderness adventures for weeks.

Behind the projects is Oxford-based EV engineering firm Electrogenic, whose partnership with Momoa began with perhaps its most ambitious build to date: converting his 1929 Rolls-Royce Phantom II to electric power. This time, the brief became even stranger.

Among the newest builds is a 1949 Land Rover Series I—one of the earliest surviving examples of a vehicle that would eventually become one of the world’s most recognizable off-road brands. Rather than replacing its character with modern tech, engineers focused on retaining it: the original four-wheel-drive systems remain intact, the original levers still operate, and the vehicle can still tackle rough terrain much as it did nearly eight decades ago. The difference is that it now does so silently.

“It’s a whole different experience,” Momoa says of driving the converted vehicles. “Me and my daughter going through the forest quietly — it’s beautiful.”

A second build pushes things further. The company also electrified Momoa’s 1961 Land Rover Dormobile camper — one of roughly 150 examples ever produced—transforming the rare overlanding icon into a zero-emissions expedition vehicle.

Modern induction cooking replaces gas appliances. Batteries are hidden within the vehicle structure. Fast charging has been added. The result is something unusual even by EV standards: an electric camper designed specifically for extended off-grid use. But the motorcycles may be the strangest part of the project.

Electrogenic has converted three of Momoa’s vintage Harley-Davidsons, dating from the 1920s—motorcycles built in an era when front brakes were optional, kick-start injuries were common, and rider comfort was largely theoretical. Two of those motorcycles now operate as hybrids.

Rather than removing the original engines, engineers discreetly added electric motors to the rear wheels, creating machines capable of running on gasoline, electric power, or both simultaneously. The concept sounds improbable. Riding them sounds even more surreal.

“If I want to hear the sound, I can,” Momoa says. “And if not, I can just flip it over to electric.”

Hybrid motorcycles address more than just emissions. They also solve usability.

Electric motors eliminate difficult kick-start procedures, dramatically increase low-speed torque, and add modern braking capability. Riders can move silently through trails and towns, then switch back to combustion power when range or nostalgia demands it.

The challenge, according to Electrogenic CEO Steve Drummond, was not merely fitting electric components into vintage machinery. It was making technologies separated by nearly a century work together seamlessly.

“The technical challenge with the Land Rovers was introducing electric power while retaining the original four-wheel-drive transmission,” Drummond says. “For the Harleys, the challenge was even greater.”

That challenge reflects a broader trend emerging across the automotive world.

Classic-car electrification has evolved rapidly from a controversial niche to a growing industry segment, driven by tightening emissions rules, changing consumer tastes, and advances in battery technology. Companies now offer conversions for everything from sports cars to vintage trucks, but most remain relatively straightforward EV swaps. Momoa’s projects occupy stranger territory.

These vehicles aren’t merely electrified classics. They are attempts to preserve mechanical identity while altering the experience of ownership itself. The philosophy extends even beyond the vehicles.

Alongside the Land Rovers and motorcycles sits another unusual build: an expedition trailer equipped with 93kWh of battery storage, capable of powering appliances, refrigeration, and audio equipment, and even charging electric vehicles during extended wilderness trips.

For someone who describes himself as living “kind of off the grid,” the appeal is obvious.

“I’m always excited about what’s happening with technology and how we move through this world,” Momoa says. “I want to be able to stay outdoors and try to do something in a more sustainable way.”

For decades, vintage vehicles represented a tradeoff: preserve history or embrace modern technology.

Momoa’s garage suggests a third option may be emerging.