The Mirai marathon
As the first fuel cell EV to cross Britain, the Toyota Mirai has mapped our hydrogen fuel infrastructure
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Published: 30 June 2018
This Article was Written by: Katie Hill - My Green Pod
Toyota’s Mirai has become the first fuel cell electric car to journey the length of Britain from John O’Groats to Land’s End, emitting nothing but a few litres of pure water along the way.
Organised by motoring magazine Autocar, the expedition revealed the progress the UK is making in building a national hydrogen infrastructure and realising the wider opportunities hydrogen offers for developing a zero-emission society.
How hydrogen fuel cells are made
The Mirai’s route in fact began north of Scotland in the Orkney Islands, where a surplus of electricity generated by wind, wave and tidal systems is being used to produce hydrogen from water, through electrolysis.
This is stored in pressurised containers and transported to the islands’ principal town, Kirkwall, where it is used in an array of fuel cells to generate electricity to power local homes and ferries berthed in the harbour, with no harmful emissions.
Once on the Scottish mainland, at the northernmost community of John O’Groats, the Mirai was put to the test to see if its full tank range of around 300 miles would allow it to cover a distance of more than 1,100 miles to Britain’s far south-west, following a cross-country route between hydrogen filling stations.
The hydrogen transport network
This took the crew first to Aberdeen, a city at the forefront of realising the potential of hydrogen through H2 Aberdeen. In this local partnership, businesses, transport operators, local, regional and national government and other bodies are working together to establish a centre for hydrogen production and develop a local hydrogen-based transport network.
The Mirai’s tanks were replenished at a public filling station which claims to be the busiest in Europe.
The first stop in England was in Sunderland, where a Fuel Cell Systems truck demonstrated how hydrogen fuel can be safely transported and dispensed from a mobile unit.
The location for the fill-up was Haskel, a company developing new hydrogen fuelling systems that can operate quickly and consistently. The Autocar team noted that, even though refuelling from the mobile unit took longer – around 10 minutes rather than the four taken at a filling station – it was still significantly quicker than the time required to recharge a battery electric vehicle.
Final refuelling was in Beaconsfield in Buckinghamshire, 276 miles from the final destination in Cornwall. Even though the remaining distance was close to Mirai’s cruising range, it was accomplished with fuel to spare.
17.9p per mile
At the conclusion of the test, Autocar calculated the Toyota covered 1,108 miles at an average speed of 56mph, using 0.9kg of hydrogen for every 100 kilometres (62 miles) driven. There were four stops, with combined refuelling time of 15 minutes and fuel bill of £193 – equivalent to 17.9p per mile. Along the way, 14.5 litres of water were expelled from the car’s fuel cell system.
Prefacing the extensive feature, Mark Tisshaw, editor of Autocar, said of Mirai, ‘As it did with the Prius more than 20 years ago, Toyota has seen the future, then created and executed it.
‘Next come the real challenges: developing the infrastructure needed to support hydrogen’s widespread adoption as a fuel for our vehicles, and enabling more people to enjoy drives like ours in cars as gratifying and impressive as the Mirai.’