INTI: Where Solar Dreams Take Flight

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How it all began

Julian and James Field, a father and son team from the United Kingdom were inspired by the idea that solar powered vehicles might be a practical possibility for everyday use. In the autumn of 2013 they began to design a proof of concept vehicle stipulating that it had to be practical, affordable and road legal. In early 2014 their design was complete and by the summer a prototype, named SPV1, began to undergo road testing.

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The SPV1 prototype

SPV1 performed better than expected, achieving workable top speeds and a useful range. Its battery had a re-charge time of 3 hours under normal daylight conditions offering freedom from charge points. Higher top speeds could be reached by increasing motor power and greater ranges achieved by adding battery capacity.

Modelling work carried out demonstrated that in countries where solar irradiation is higher than 5 kWh/m2 throughout the year, solar electric cars can meet much of the transport needs that are currently being provided by highly polluting ICE vehicles.

The SPV1 prototype

SPV1 performed better than expected, achieving workable top speeds and a useful range. Its battery had a re-charge time of 3 hours under normal daylight conditions offering freedom from charge points. Higher top speeds could be reached by increasing motor power and greater ranges achieved by adding battery capacity.

Modelling work carried out demonstrated that in countries where solar irradiation is higher than 5 kWh/m2 throughout the year, solar electric cars can meet much of the transport needs that are currently being provided by highly polluting ICE vehicles.

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The INTI is born

Encouraged by the performance of SPV1 and recognizing the commercial potential of a solar car, the pair founded Solar Transport Systems Inc and began work on a production vehicle. Ten years and over 7,000 engineering hours later the INTI was born. Named after the ancient Inca sun god, a prototype of the INTI is in pre-production testing. In 2023 the business moved to Florida and production is planned to start in 2025.

The Ride Starts Now

Today, INTI isn’t just a car - it’s a revolution parked at your doorstep. With Florida Tech’s Vertex Facility perfecting our prototypes, we’ve unleashed a 2-seater that zips 35 free solar miles daily and cuts $14,000 in fuel costs.* Picture this: you, turning heads with superyacht style, cruising emission-free, backed by a 5-year battery warranty. The first 250 trailblazers get numbered editions - your chance to lead is here!

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Lighting the Way Ahead

Tomorrow’s roads belong to INTI—the spark that’s just begun. We’re not stopping at one ride; this is the first of many, bringing solar freedom to neighborhoods everywhere. With every INTI saving 81 tons of CO2,* you’re not just driving—you’re shaping a cleaner, brighter future. Ready to be part of what’s next? Your solar journey starts with a single step.

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WHEN WOULD YOU LIKE TO START?

Start straight away and learn at your own pace. If the course hasn’t started yet you’ll see the future date listed below.

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10

Years in development

14 

Nationalities

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40

Engineers designers and technicians

7k+

Engineering hours

Thank you to our Partners

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University of Leeds

STS has been working in partnership with the Department of Mechanical Engineering of the University of Leeds, Unted Kingdom on the chassis, drive train and mechanical systems of the INTI.

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Florida Institute of Technology

Florida Tech has been an asset to STS since fully moving our operations over to the United States. We have partnered up with them and their Vertex Facility to finalize our testing and building as we prepare for our final launch.

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Vehicle Network

Solar Transport Systems is a member of the Niche Vehicle Network which is supported by the Office for Low Emission Vehicles, Innovate UK, the Advanced Propulsion Centre and the Department for Business, Energy and Industrial Strategy and is managed by Cenex.

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Matteo Conti

Matteo is Senior Tutor in Vehicle Design at the Royal College of Art, London. Matteo is a board advisor to STS with a focus on vehicle aesthetics.

Check out some memories throughout the years

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Meet Team INTI

Visionaries, Pioneers,
Game-changers

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Julian Field

Founder and CEO

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Jim Kay

Chief Operating Officer

Watch the original INTI in action

Keep up to date with us

INTI in Brevard Business News: A Solar Vision Brought to Life - Solar Transport Systems

INTI in Brevard Business News: A Solar Vision Brought to Life

Jun 16, 2025
by
Sean Adams

Brevard Business News takes readers behind the scenes of INTI’s 11-year journey — from a father-son experiment to the world’s first production solar-powered neighborhood car. In this feature, founder Julian Field shares the inspiration behind INTI, the milestones that made it possible, and how this breakthrough began right here on Florida’s Space Coast.

INTI Launch Event Featured in Florida Today Photo Gallery - Solar Transport Systems

INTI Launch Event Featured in Florida Today Photo Gallery

Jun 02, 2025
by
Sean Adams

Florida Today captured the unveiling of INTI — the world’s first production solar car — in an exclusive photo gallery. See the event, the vehicle, and the solar-powered excitement as history was made in Palm Bay.

INTI in the News: Florida Today Covers the World’s First Production Solar Car - Solar Transport Systems

INTI in the News: Florida Today Covers the World’s First Production Solar Car

Jun 01, 2025
by
Sean Adams

INTI is making headlines. Florida Today covers the unveiling of the world’s first production solar car — built after 11 years of innovation, now road-ready and solar-powered. Learn how INTI is transforming transportation and making history in the process.

INTI Gears Up for Production - Solar Transport Systems

INTI Gears Up for Production

Feb 23, 2024
by
Julian Field