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Questions to answer when installing business EV chargers at your workplace
Sep 10, 2021

What do you need to consider to get your business EV ready and future-proof your charging setup? Let’s look at 5 key considerations all businesses should have answers to before they start.

With the UK ban on new petrol and diesel vehicle sales in 2030, the race is on to go electric. It's time to plan and develop the workplace charging infrastructure your employees and customers will need.



The direction of sustainable transport is clear. Zero emission driving is at the heart of the government's net zero commitments, including the world’s most ambitious climate change target of 78% emissions cut by 2035 – compared to 1990 levels.


Consumers are also very enthusiastic about EV, as indicated by new car registrations this April – with full battery, plug-in and hybrid vehicles accounting for over 1-in-5 of UK sales. And fully battery electric vehicles registrations up 583% on April 2020. With it being predicted that by 2029, 20% to 30% of all the vehicles on UK roads will be electric. In future the need for easy access to charging facilities is going to be essential

1. Is it feasible to install EV charge points at your site and can you easily expand your facilities to meet future demand?

It's often best to start your feasibility study by assessing the strength of support from senior management and employees. 

For organisations who rent their site, installing workplace charging will of course require landlord permission. Many tenancy agreements permit improvements to the building, so installing EV infrastructure should be included in this clause. However, the length of tenancy should also be considered.


Other key questions to ask are: Do you have enough land or existing parking bays to install charge points? How close is your power supply? The further away, the more digging will be required – resulting in higher costs.


It’s also important to consider the feasibility of scaling up your EV infrastructure as demand grows. Forward planning is critical as demand for EV will explode as the 2030 phase-out of internal combustion engine cars approaches.


Our end-to-end solution for workplace charging enables strategic expansion of charging infrastructure, with simplified procurement of hardware, intelligent software for charger and site energy management.

2. Who needs to charge and how?

Working out whether you need to install workplace charging and the number and type of charge points you require starts with understanding the needs of your employees, customers and site visitors.


Firstly, how many staff already drive private or company electric cars? How many others plan to switch to EVs over the next 3-5 years? Do home/public charge points satisfy their needs? For example, an employee with access to home charging and a short commute of around 20 miles, probably won't need to charge at work, whereas those with a long commute, or who are field-based, will probably need to. 

Charging times


For those who can't charge at home, how long is their vehicle typically parked at work (dwell time) and what's their usual average daily mileage? This will help determine the type of charge point required, i.e.


  • Standard (3-7kW) – charging takes 4 to 8 hours
  • Fast (7-22kW) –Charging takes 2 to 4 hours
  • Rapid (up to 50kW) – charging takes 30 to 60 minutes
  • Ultra Rapid (150kW) - charging takes 20? minutes


You also need to factor in electric vehicle types as rapid charging isn't suitable for all models, while range of mileage will also vary for different vehicles. In all probability, you will require a mix of charge point types to suit varied demand.

3. Do you have enough on-site electricity capacity to meet extra demand?

Our survey of business attitudes to EV showed that only 43% of businesses have considered the impact of moving to electric transport on their power requirements.


Installing on-site charging stations on your site will certainly increase electricity demand. Calculate how much extra power you require and what times of day to develop a solution. This will inevitably mean making changes to your current supply; but could necessitate an enhanced grid connection if there are local supply constraints. Make sure your charge point technology provides load balancing, which enables you to keep within the limits of your available capacity.


Optimising energy for cost and carbon savings


Specifying smart charges enables you to optimise the time of charging, so that it takes place when network demand and prices are lowest. In this way, drivers can save money while helping to de-constrain the grid and maximise the use of renewables in the energy mix. Consider future technologies too, such as Vehicle 2 Grid (V2G), which will open opportunities to sell surplus energy back to the grid.


In partnership with Vauxhall, we're leading the way by integrating time-of-use renewable energy tariffs into charger installations, including 'free green miles' credit. We've also launched a fleet smart charging management app that makes reimbursement easy and features tariff optimisation. This enables drivers to charge when power prices are lowest from any standard charge point.

4. Do the economics of your EV plan stack-up and how will your fund your project?

The cost of making your workplace EV friendly is now much more affordable. As the industry rapidly scales, technology prices for charging infrastructure will continue to fall. This is mirrored by the falling total cost of owning a plug-in vehicle. Despite their current higher purchase cost, they are cheaper to run than their petrol and diesel equivalents and owners benefit from tax breaks and other financial incentives.


It's essential to understand the full ongoing costs of your on-site charging facilities, including energy supply, so that you can ensure that your financial model stacks up and aligns with wider business goals. Ensure that you make the most of the funding and tax incentives and think about how you will gain visibility and control over usage to keep operational costs under control.


Workplace charging grants of up to £14,000 are available to support on-site installation. In addition, the new Super Deduction tax break will enhance existing capital relief allowances on investment in charge points.



At an early stage, you must consider a financial charging model for employees and/or customers to fund the initial infrastructure investment and ongoing power supply and management costs. There's also an opportunity to drive commercial revenue by providing out-of-work hours public access to your charge points.

5. How will you manage charge point operation to improve user experience and optimise lifetime performance?

How will you manage the day-to-day operation of your EV infrastructure? What technologies do you need to provide you with complete control, security and visibility of your assets? How will you manage integration with on-site generation and storage? How will you optimise tariffs and automate load scheduling and sharing for improved cost and energy efficiency? What actions must you take to ensure long-term efficiency and keep your assets operating at peak performance?


What about the user experience? For example, how will you gain control over who uses your workplace charge points and when? How will you distinguish between private and business mileage, or integrate home charging facilities? Do you want to bill all users, or set different tariffs for various users? What are your ongoing maintenance requirements?


These are just some of the many questions you need to ask when developing plans for workplace charging.

British Gas Business

Our charger management software platform and mobile driver app gives you complete control over charge point infrastructure, charge point utilisation, energy usage and driver experience. This provides you with real-time network status monitoring, usage reporting and analysis, while providing a seamless user experience for your employees, clients, and visitors.



Our charging facilities are vandal-proof, fireproof and weather-resistant and both the equipment and software come with warranties, but we also provide fully managed service packages to optimise performance and prolong your asset lifespan.

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