Workplace EV Charging Infrastructure: Chargers, Power & Load

Posted 14/05/2026

Ask any facilities manager who has installed EV chargers and they will tell you the same thing: the EV charging points you can see are only part of the story. The infrastructure beneath it, from the power supply and cabling to the load management software and DNO connection, is where the real planning work happens. Get it right and you have a system that grows with your organisation. Get it wrong and you are looking at expensive remedial work when demand starts to outpace capacity.

This guide walks through the core decisions involved in workplace EV charging infrastructure: what components are needed, how to choose the right charger types, what happens when the power supply becomes a constraint, and how smart technology makes the whole system easier to manage. Whether you are a facilities manager planning an initial pilot or an operations lead preparing for a full-site rollout, this is the practical foundation you need.

Core Components of Workplace EV Charging

A workplace electric vehicle charging installation is more than a row of charge points bolted to a wall. At its most complete, the infrastructure comprises several interconnected elements working together.

Charge points. The visible hardware that vehicles connect to. For most workplaces, these will be AC units running at 7kW or 22kW, although some sites also incorporate a small number of DC rapid chargers for specific use cases. Hardware selection depends on dwell time, available power, and user type.
Electrical distribution. Charge points connect back to a dedicated sub-distribution board, which in turn feeds from the site's main electrical supply. Routing cables from the board to individual charging bays requires planning around groundworks, ducting, and cable management, particularly across large car parks or multi-storey facilities.
Load management system. Software that monitors and distributes the site's available electrical capacity across active charge points in real time. Without load management, a site with 20 chargers running simultaneously could exceed its supply capacity. With it, power is shared intelligently across sessions, keeping demand within limits and avoiding costly grid upgrades.
Network connectivity. Modern workplace chargers connect to a cloud-based management platform via Wi-Fi, 4G, or ethernet. This connectivity enables remote monitoring, fault alerts, usage reporting, and over-the-air firmware updates.
Access and payment systems. Depending on the organisation's policy, charge points may be restricted to employees with RFID fobs or app-based authentication, open to all via contactless payment, or a combination of both. Some employers subsidise workplace charging costs for staff while operating pay-per-use for visitors.

These components do not exist in isolation. Decisions made about one, such as the number of charge points installed, directly affect what is needed from others, including the size of the distribution board and the load management logic. That is why planning the infrastructure as a complete system, rather than just selecting hardware, produces better outcomes. Review our complete workplace ev charging guide for more information specific to the UK.

Selecting the Right Chargers

Charger selection is one of the most consequential decisions in a workplace EV infrastructure project. The right choice depends primarily on how long vehicles are parked, how many users need to charge simultaneously, and what the site's power supply can support.

AC Charging for Workplaces

AC charging is the right answer for the vast majority of workplace installations. The reason is straightforward: most employees park for six to nine hours during a working day, and a standard 7kW AC charger will comfortably deliver a full charge to most modern EVs within that window. There is simply no need to pay for faster hardware when dwell time does the work.

The choice between 7kW (single-phase) and 22kW (three-phase) AC charging comes down to the vehicle mix and the site's available three-phase supply. Single-phase 7kW chargers are simpler and cheaper to install and sufficient for the majority of drivers. Three-phase 22kW units are worth considering where drivers have shorter working hours, high-capacity vehicle batteries, or where three-phase supply is readily available across the site.

Tethered versus untethered units is another practical consideration. Tethered chargers have a cable permanently attached, which makes the process simpler for drivers and reduces the risk of cable theft. Untethered chargers use the driver's own cable, which suits workplaces with a mix of vehicle connector types. For more information on the range of AC workplace chargers available, visit the Blink workplace charging page.

DC Charging Use Cases

DC rapid charging at the workplace is a specialist application rather than a general requirement. Where it makes sense is in specific scenarios: a fleet of pool vehicles that need to be recharged quickly between shifts, visitor bays where short parking windows justify higher power, or executive bays where vehicles may only be on-site for a few hours.

The cost differential is significant. A DC rapid charger (50kW to 150kW) typically costs several times more than an equivalent AC unit, requires more complex installation, and draws substantially more power. Deploying it across an entire car park is rarely justified for standard employee EV charging. A common and practical approach is to include one or two DC rapid chargers within a predominantly AC installation, giving the site a fast charging option without building the entire infrastructure around it.

Power, Grid & Load Management

Power supply is often where workplace EV charging projects run into their first real complexity. Understanding the site's existing capacity and how much headroom is available for charging is essential before committing to hardware quantities or making procurement decisions.

Assessing your available capacity. Most commercial premises have a three-phase supply, but the available capacity for EV charging depends on what the site is already consuming and what the connection agreement with the Distribution Network Operator (DNO) permits. A site survey by a qualified electrical engineer will establish the baseline and identify the realistic charging capacity without infrastructure upgrades.

The DNO process. If a site needs to increase its grid connection to support a large number of charge points, a DNO application is required. These applications typically take between 12 and 26 weeks to process and involve a cost from the network operator for any necessary reinforcement work. For organisations planning significant charging rollouts, initiating the DNO process early is critical to avoid delays.

Why load management changes the picture. Smart load management is often the most cost-effective solution for sites where a DNO upgrade would otherwise be required. Rather than upgrading the grid connection to serve the peak demand of every charger running at full power simultaneously, load management software continuously monitors total site demand and distributes the available capacity dynamically. A site that might only support 10 full-power chargers without management can often serve 30 or more chargers when load management is in place, because real-world usage patterns mean that not all chargers are active at peak power at the same time.

The financial case for load management is compelling. In many workplace scenarios, investing in smart load management technology costs a fraction of what a DNO grid upgrade would require, while achieving the same practical outcome for users.

Blink Charging - EQ 200 - Hospitality & Leisure

Smart Charging & Monitoring

Beyond load management, smart charging technology opens up a wider set of capabilities that make workplace EV infrastructure significantly easier to operate and more useful to the business.

Time-of-use scheduling. Smart chargers can be programmed to prefer charging during off-peak hours, when electricity costs are lower. For workplaces on half-hourly metered tariffs, shifting the majority of charging demand to overnight or off-peak periods can produce meaningful savings on electricity costs. For sites with solar generation, smart scheduling can also prioritise charging during periods of high local generation.

Usage reporting and ESG data. The Blink Network platform captures granular data on every charging session: energy consumed, session duration, user activity, and carbon equivalent calculations. For organisations with sustainability reporting commitments or ESG targets, this data provides the evidence base needed to report on employee EV uptake and the emissions savings associated with it.

Remote monitoring and fault management. Network-connected chargers report their status continuously. If a unit develops a fault, the management platform generates an alert and in many cases enables remote diagnostics and reset without an engineer visit. This is particularly valuable for multi-site organisations where sending an engineer to investigate a single offline charger would be time-consuming and costly.

Driver authentication and access control. OCPP-compliant chargers support multiple authentication methods. Employees can use RFID cards, the Blink app, or autocharge functionality linked to their vehicle. Visitors or public bays can be configured for contactless payment. Access policies can be adjusted remotely through the Blink Network without needing to visit the site.

Designing for Scalability

The single most common infrastructure mistake organisations make is designing for today's demand rather than tomorrow's. With EV adoption growing year on year, a site that installs 10 charge points in 2025 will almost certainly need 30 or 40 by 2030. The question is whether the infrastructure has been laid to make that expansion straightforward or expensive.

The good news is that future-proofing does not require spending money on chargers you do not need yet. It requires spending on the underlying infrastructure that makes future expansion cost-effective.

Install ducting and cabling routes for the full anticipated number of bays during the initial build-out. Adding a cable tray or duct run when the groundworks are already open costs very little. Revisiting the same groundworks two years later to add cabling for new chargers costs considerably more.
Size the electrical distribution board for the planned final capacity, even if you are only populating a fraction of the charge points initially. Replacing a board that is too small is a significant rework.
Engage with the DNO about the connection that will ultimately be needed, not just the connection needed for the first phase. This avoids committing to a connection that needs upgrading again within a few years.
Choose an OCPP-compliant management platform that can scale to manage hundreds of charge points without requiring a system change. The platform you start with should be the platform you grow into.

A phased deployment approach, where civil and electrical infrastructure is installed for the full site from the outset but charge points are deployed as demand grows, is the model that consistently delivers the best long-term cost per charge point installed.

Blink's Infrastructure Approach

Blink's approach to workplace EV charging infrastructure starts with understanding the site, not with selling a product. That means a thorough site survey to assess power supply, parking layout, cable routing options, and anticipated demand before any hardware is specified.

From that survey, Blink produces an infrastructure plan that covers the initial installation and the pathway to full capacity, so organisations can see what they are committing to at each stage and what the full build-out looks like when demand warrants it.

OCPP-compliant hardware across the full range, from 7kW AC workplace chargers to DC rapid units, all network-connected as standard and compatible with the Blink Network management platform.
Smart load management built in from the start, meaning organisations can deploy more charge points than their raw power supply would otherwise support, and add more as supply headroom is created.
The Blink Network platform for real-time monitoring, scheduling, reporting, and remote management across all connected charge points, whether on a single site or across a national estate.
Installation project management from site survey through to commissioning, with coordination of DNO applications and civil works where required.

For organisations ready to explore what a workplace charging infrastructure project would look like for their site, the Blink workplace EV charging solutions are the starting point. You can also explore the full range of commercial EV chargers or get in touch with the Blink team to discuss your site.

Getting the Foundation Right

EV charging is not difficult to install. Workplace EV charging infrastructure that actually meets demand, scales with your organisation, and does not require expensive remedial work in three years is harder to get right. That difference comes down to the decisions made at the planning stage: the size of the distribution board, the cabling routes laid in anticipation of future bays, the load management approach chosen, and the platform selected to run it all.

The organisations that get it right are not the ones who spent the most at the start. They are the ones who planned with the full picture in mind from day one. If your organisation is at the point of making those decisions, it is worth taking the time to do it properly.

See how Blink supports organisations at every stage of their workplace charging journey on the Blink workplace hub.