Developed by 3ti, the UK’s leading designer, installer, funder and operator of Solar Car Parks (SCPs), Papilio3 tackles the UK’s need to expand electric vehicle (EV) infrastructure ahead of the government’s proposed ban on the sale of new diesel and petrol vehicles in 2030.
The unit is built around a recycled shipping container and can support up to 12 fast EV charge points. The solar and battery-boosted charging system optimises the speed of charge and reduces the carbon intensity of electricity used. Papilio3 is available from 3ti on a rental contract and therefore requires no capital investment by customers.
50% of households cannot charge overnight
“Overnight charging at home generally provides the most cost effective, carbon efficient, sustainable form of EV charging, but in the UK, around 50% of households will not be able to do this,” explains Tim Evans, 3ti founder and CEO, and leader of the teams responsible for the two largest SCPs in the UK, at Bentley Motors, Crewe and JP Morgan, Bournemouth.
“If you live in a flat, a tower block, a rented house, in temporary accommodation or even in a £10m terraced town house in Chelsea, you’re probably not going to be able to charge an EV at home.
“We believe that solar and battery boosted destination and workplace charging will become the best EV charging solution for drivers, irrespective of the type of home they live in,” he said.
“By utilising dwell times of several hours, when cars are parked at work or when the driver is visiting a shopping or leisure venue, for example, 3ti’s system ensures that EVs can achieve a level of charge that covers day to day driving needs and does it in the lowest carbon way.”
36 solar panels and battery storage
Papilio3 is fitted with three modular canopies that support 36 solar panels and has battery storage capacity of up to 250 kWh. It has been developed by 3ti with Cambridge design partners, and has been designed for roll-out at workplaces and public destinations such as hospitals, hotels, meeting venues, sports or shopping centres, tourist attractions and town centres.
”Widespread adoption of SCPs will turn underutilised spaces into renewable energy generating assets, and adding batteries and EV charge points will accelerate decarbonisation of the UK’s transport sector,” said Evans.
“Allowing businesses to generate renewable energy right outside their front door not only gives them greater control of energy costs, it also makes a huge statement to customers and visitors that they are serious about tackling climate change and reducing carbon emissions. By deploying fast charge points, up to 12 at a time, with Papilio3, we will provide much needed, cost-effective charge point infrastructure and expand the UK’s network of public EV charge points.”
Papilio3 integrates three technologies that are more usually considered individually: solar photovoltaic electricity generation, Battery Energy Storage Systems (BESS) and EV charge points. Combining the three offers a range of benefits, including the ability to use grid energy, solar power and battery storage to optimise the speed and carbon intensity of EV charging. Onsite renewable energy generation from solar panels also reduces energy costs and gives businesses greater control over energy supply.
Management of renewable energy
“Papilio3 isn’t just about providing the UK with a broader range of EV charge points,” said Evans. “It also focuses on the capture and management of renewable energy, as a way of reducing the country’s draw on carbon-intensive energy for EV charging at peak times.”
“One of the best things about owning an EV is that you don’t have to visit a petrol station to fill up,” says 3ti chief technical officer, Mark Potter.
“As EV drivers, we want to charge when we stop, not stop to charge. Rapid charging with 50-250 kW is fine for en-route charging during long journeys, but it’s not the right solution for regular use – it increases battery degradation and pushes up electricity prices for everyone, not just those who are charging. If you can’t charge at home, it’s best to charge when you arrive at where you’re going.
“Cars are parked 95% of their time – that’s when and where they should be charged. Destination and workplace charging is a more sustainable option, better value and more much more convenient. The three technologies integrated in Papilio3 enable the system to store and use the cleanest, lowest cost energy from its own solar panels and the grid supply. That means we can reduce the demand on peak hours grid energy without compromising EV charging speed.”