Scaling of an Installation

End User ROI

The CAPEX needed to install EV chargers can be prohibitive to the uptake of EV over ICE vehicles, however the end user can helped in understanding the potential of monetising the installation and turning the project from a major business expense to an opportunity to monetise some space and pay back the upfront costs.

Some assumptions as an example:

• 6x twin 7.4kW free-standing chargers, two ‘free vend’ to directors and four for staff use
• Average management platform costs of £60/socket/annum
• Average business cost of £0.30/kWh, sold for £0.55/kWh
• 4 chargers monetised for staff use, average dwell time of 6 hours per day
• No ‘free’ electricity from a solar installation

The result is an ROI in 95 weeks of use!

Hardware Cost	£20,000
Installation Cost	£20,000
Management Cost (36 months)	£2,160
Total CAPEX	£42,160
Electricity cost / kWh	£0.30
Electricity selling price / kWh	£0.55
Dwell time (hours) per socket	6
Sockets monetised	8
Transacted energy per day (kWh)	355.2
Profit per day on energy transaction	£88.80
Profit over a working week (5 days)	£444.00
ROI (Weeks)	95

If the unit cost / kWh is halved (50% paid from the grid, 50% ‘free’ from a PV installation), the ROI comes down to 59 weeks! The CAPEX value, although not a small investment, should be seen as an opportunity to build some contribution to the business and not a cost that can’t be recouped. Some businesses are opening their carparks for public use over the weekends as charging hubs for those without off-street parking, further increasing dwell time and socket use.