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Energy Saving

Electric Vehicle Charge Points – EVCPs

Why should your business be interested in Electric Vehicle Charge Points (EVCPs)? There are several answers to this and they all relate to protecting and growing your customer base and your profitability. The UK is already meeting the target from the Committee on Climate Change and is on course for 60% of new cars to be electric by 2030.

Whether you’re in leisure and hospitality (many hotels going green are taking advantage of this seed change), retail, wholesale, manufacturing and engineering, health and care, sports, education, or an office based business, you’ll attract Electric Vehicle (EV) owners away from your competitors by providing them somewhere to charge their vehicles. Your competitors will do it to your detriment if you don’t. Whatever sector you’re in, there are five key factors in choosing which type of charge point is for you.

  1. The location of the charge points and the power supply available
  2. The speed of charge you need to offer people based on how the charge points will be used
  3. How you want to control access to the charge points
  4. What reporting requirements you have, especially in the case of Benefit in Kind (BIK) e.g. providing EV charging free to employees as part of your Corporate Social Responsibility (CSR) 
  5. If you want to charge people to use the charge point, or offer its use for free

There are five main modes of EV charging.

  1. Basic
  2. Standard
  3. Fast
  4. Very fast
  5. Rapid.

Charging times range typically from 9.5 hours to 30 minutes. These modes represent power outputs and therefore the charging speeds available to charge an EV. Note that power is measured in kilowatts (kW). Rapid DC units are generally only found in service stations and the majority of chargers for the other applications in modes 1-4 are AC.

EVs are one of those big disruptive changes that if embraced, provide many new opportunities for businesses.

Technology brands we use for all our renewable and energy saving installations are selected for reliability, longevity, product range and warranty. For EVCPs we use two manufacturers, EV Box and Rolec. EV Box is a great choice for very high IP (water and dust) and IK (impact) ratings. Rolec is a UK based manufacturer with a long history and track record in the Marine sector.

You can download a Technology Information Sheet here.

Below is a case study for a project we have been carried out in commercial EVCP, followed by FAQs.

FAQs

Arguably we all will, but any business that owns an electric vehicle (and that is getting to be an unavoidably large number, as legislation puts the pressure on fossil fuelled vehicles), or any business that wishes to aim at EV owners.

It depends on who owns the car park, but the EVCPs can be restricted to authorised users via various options, so only those allowed can charge up.

Yes, if you want to. RFID (radio-frequency identification) cards for example, make it easy to restrict access and record who is charging and how much charge they are using. There are other options as well.

Yes, subject to site survey we’ll advise the best type of unit.

Yes. A 230V, 16A supply will be enough and there are also renewable energy options. Anyone can have an EVCP.

An AC charging point supplies the vehicle’s onboard charger which in turn converts the AC power to DC allowing the battery to be charged. The size of the onboard charging device is constrained by the space inside the vehicle and the price point the manufacturer needs to sell the car at. Because an on-board converter is small, the amount of power it can deliver to the battery is typically low (3-6kW).

A DC fast charger bypasses the onboard charging device, supplying power directly and safely to the vehicle’s battery. The DC charger is external to the vehicle and therefore not constrained in size or cost. DC fast chargers use 3-phase power, and have smart technology, enabling them to adjust the charge level to suit the battery state. DC fast chargers are mainly used at service stations.

At present, there is still no official standard guidance on charging types and times, but for those who wish to understand how charging times are calculated, here is some basic electrical theory!

  • Power (Watts) = Current (Amps) x Voltage (V)
  • Charge Time (hours) = Battery Capacity (kWh) / Power (kW)

In a three-phase system the power is simply three times the single-phase power. In UK (and rest of Europe) the Voltage is the standard 230V, for either a domestic single-phase supply or the phased voltage of a commercial three-phase supply.

To work out the costs of charging an electric car, simply multiply the current cost of electricity per unit (kWh) by the battery capacity of the model in kW. This figure may be affected positively if you have Solar PV/ battery storage.

Simply divide the cost of charging by the range of the car. If we take a £6.15 charging cost for a small hatchback, and use a manufacturer’s specified range for that size of battery (250 miles), we get:

£6.15/250 = 2.46p per mile (the AA states as low as 2.00p).

To calculate the comparison, simply take the current average price of fuel per litre and multiply it by the size of the fuel tank, e.g.

Cost per Litre £1.31 (replace figure with the current fuel cost) x 45L = £58.95

Vehicle MPG = 45 (MPL 9.9). Vehicle range = 45L x 9.9 = 445

Cost per mile (fossil fuel) £58.95/445 = 13.20p

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