Existing investors Pale Blue Dot and SkyScanner co-founder Gareth Williams also participated in the oversubscribed round. The company will use the funding to accelerate the rollout of its electric bus services and further invest in EmberOS, the platform that controls the network and delivers a game-changing customer experience.

Ember is tackling the challenge of electrifying the most highly utilised vehicles on the road – intercity buses. These often travel over 250,000 kilometres per year, far exceeding the average mileage of even long-distance trucks. The vast distances and large vehicle size mean the emissions saved from electrifying each intercity bus far outweighs other vehicle categories.

Rather than just providing software to help legacy operators go electric, Ember is taking a full-stack, first-principles approach to create a new, highly optimised, all-electric network. This allows Ember to flexibly scale across multiple geographies and seamlessly adapt to shifting passenger demands to offer a superior customer experience at lower cost - all with zero emissions.

This approach includes building its own dedicated ultra-fast charging network, designing and operating its own routes and working closely with its manufacturing partner on vehicle development. Everything is brought together by EmberOS, the proprietary tech platform that orchestrates all operations - including charge management, routing, and end-to-end network optimisation.

The goal is to both take advantage of the superior margins achieved by optimal use of electric buses and to take cars off the road by offering a dramatically superior and far more climate-friendly travel experience at a lower cost.

Ember has five new charging hubs under parallel development, all modelled on their core hub blueprint. Ember’s Dundee hub is capable of delivering charging speeds of 600 kW to a single bus, with a large proportion of the power coming from the 4 MW of on-site wind turbines. Future hubs are co-located with renewables where possible, further reducing energy costs.

Over 750,000 journeys have already been made with Ember and that’s expected to double over the coming year as the network expands. Ember will soon take delivery of the first batch of its next-generation bus, with a 563 kWh battery and a range of over 500 kilometres.

Ember is running services 24/7 at an hourly frequency. Each bus covers up to 900 kilometres per day with multiple high-speed charging sessions.

Keith Bradbury, co-founder of Ember, said “Travelling by bus or coach doesn’t have to be rubbish. It should be possible to deliver an experience that beats a car – because someone else is doing the driving so you can have your time back – but that requires a relentless focus on the passenger experience.

“Things like live tracking that actually works, super-simple pricing, easy ticket changes and near-perfect reliability.”

Pierce Glennie, co-founder of Ember, added: “Under the hood it’s a delightfully complicated problem to solve.

“EmberOS is the digital twin of our network, and we continue to add layers of data that enable the system to always know what’s going on. That means things like real-time vehicle states, current traffic conditions, nearby bus lanes, battery cell temperatures and the health of our chargers.

“When you put all of that together you can really bring down operational costs and deliver a better experience.”

Daniel Edgerley, investment director at Inven Capital, said: “Inven Capital is excited to co-lead Ember’s financing round alongside 2150 and AENU, and to join other great existing investors. We have been impressed with both Keith and Pierce as founders and as visionaries of the future of shared transportation.

“Our commitment to the company underscores our belief in their customer-centric and innovative approach to electrification and digitalisation across the business.

“Their decision to fundamentally link their smart infrastructure design, assets and technology platform enables unparalleled optimisation, as well as visibility and data-evidenced insights that gives clean transportation a clear advantage over incumbent solutions.”

Rahul Parekh, partner at 2150, said: “At 2150, we love founders that are solving some of the world’s biggest problems. Inter-city travel represents the majority of passenger miles and 90% of those journeys happen in the car so decarbonising this sector has huge sustainability impact.

“With Ember, Keith and Pierce have developed an innovative, full-stack, electrified bus fleet, using technology to provide superior customer service and fantastic operating margins compared to legacy solutions.”

Siobhan Brewster, partner at AENU, said: “Transport accounts for c.20% of global CO2 emissions – almost half of which stem from passenger road transport.

“AENU believes that the electrification of intercity bus transport has tremendous impact and commercial potential but it takes a special team to build a fully-integrated solution.

“Keith and Pierce are driving forward a tech-first approach that incorporates multi-layers of pioneering software and customised hardware within its proprietary Ember OS.”