Ultra-low emission vehicle infrastructure 28 Sep 2017

Public charging network risks holding back EV take up

Potential purchasers of electric cars tempted by the benefits of quickly-improving battery capacity might still hesitate if the public charge point network doesn’t keep pace with changing technology.

While range-anxiety is set to become a thing of the past, without widespread, reliable and simple-to-use charge points the practicalities of ‘filling up’ electric cars could limit the mass-market appeal of ultra-green vehicles.

It could also hamper the government’s plan to ban the sale of conventional petrol and diesel cars by 2040.

If unacceptable delays in refuelling are to be avoided, the big strides being made by car manufacturers in battery performance – reflected in the growing distance vehicles can travel – needs to be matched by a rollout of high-performance public charge points, particularly on motorways and major A roads.

In a report for the RAC Foundation looking at how powers the Government is seeking in its Automated and Electric Vehicle Bill could be used to best effect, Harold Dermott lays out the key recharging challenges that urgently need addressing. He says that: 

  • Even though 80% of EV owners have access to home charging, 93% use the public charge point network
  • Government support has encouraged quantity rather than quality, with the result that the current public charge point network is “unattractive to use and is unsuitable for encouraging the next wave of EV customers”
  • As of June 2017, 13% - one in eight – of charge points were out of action at any one time
  • Lack of standardisation of connectors and charging protocols has resulted in a bewildering array of types of charge point, connectors and tariffs which is poorly presented to the public.
  • High performance batteries previously used in electric vehicles will start becoming available in volume from about 2020. These will be ideal to provide local energy storage at charge points to ease pressure on the grid
  • Rapid (50 kW+) charge points are essential for battery electric vehicles on long journeys but are irrelevant for plug-in hybrid vehicles which can recharge at a rate no faster than 3.6kw

 

As of June 2017, there were 4,476 public EV recharging sites with a total of 6,913 devices and 12,849 individual connectors.

This compares with about 8,500 petrol stations.

By the end of June 2017, 113,000 claims had been made under the government’s plug-in car and van grant schemes which gives buyers of the greenest vehicles a subsidy of up to £4,500.

The scheme for cars started in 2011, and for vans in 2012.

The report highlights the need for improved understanding of the types of charging required by both battery electric vehicles and plug-in hybrid electric vehicles and how this needs to be matched to customer demand.

It makes clear that the rapid take-up of electric vehicles required to meet the Government’s recent confirmation that no new wholly petrol or diesel-fuelled cars can be sold after 2040 will only happen if there is a step change in the approach to providing an adequate national charge point network.

The Committee on Climate Change has previously said that for the UK to reach its emission-cutting goals, 16% of new cars sold in 2020 should be ultra-low emission vehicles. In 2016 the proportion was 1.4%.

The report recognises that the Automated and Electric Vehicle Bill – promised in this year’s Queen’s Speech – could provide the opportunity to address some of the problems through proposals such as:

  • Ensuring that for each rapid charge point installed at a motorway service area, three slow ones are also installed for use by plug-in hybrids which cannot recharge at a rate faster than 3.6kw
  • Grants should be on offer for providers of charge points at motorway services areas who also put in energy storage units to ease the pressure on the existing power supply
  • Requiring charge point operators to cooperate on shared methods of payment
  • Introducing time limits within which operators must fix faulty recharging equipment and fines for non-compliance
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