Planning EV Charging for Commercial Properties

The decisions made at the planning stage can influence how easily the charging network can be expanded, how reliably it operates and how much intervention it requires from the property management team.

This guide outlines the key considerations for planning and implementing EV charging infrastructure in commercial properties in Singapore.

TL;DR: What should commercial property managers consider before installing EV chargers?

• Determine available electrical capacity, the condition of existing switchboards and the potential requirements for additional electrical infrastructure.
• Consider visitor dwell time, parking turnover, tenant requirements and the locations best suited to charging.
• Account for electrical upgrades, cabling, civil works, installation, software, maintenance and ongoing operating costs and not just the price of the chargers.
• Match charging speeds and the number of charging points to the property's use case and expected demand.
• Consider how additional chargers can be integrated without unnecessarily repeating electrical or civil works.
• Establish who will manage access, payments, charger faults, customer enquiries, maintenance and performance reporting.
• Confirm the requirements for the building, installation, charger registration and charging service before work begins.

A well-planned project considers the entire charging system from the building's electrical supply to the software and processes used to operate the chargers.

1. Start with the building, not the charger

One of the first questions property managers often ask is how many EV chargers a site can accommodate. However, the more useful starting point is understanding what the existing building infrastructure can support. A commercial property may have hundreds of parking spaces, but that does not automatically mean it has sufficient electrical capacity to supply a large number of chargers at full power simultaneously.

Assess electrical capacity and distribution

A technical site assessment should review the building's electrical supply, existing load, distribution boards, switchgear and the proposed routes for supplying power to the charging locations. The assessment should establish:

• The available electrical capacity and existing building load profile.
• The distribution equipment that can support the proposed charging installation.
• The distance between the electrical supply and the intended charger locations.
• Potential requirements for new cabling, cable containment, protective devices or switchboard modifications.
• Whether future electrical upgrades or additional charging points should be considered in the design.

These details help determine the practical scope of the project and identify constraints before they affect the installation schedule or budget. For example, chargers located near a suitable electrical distribution point may require less cabling and associated civil work than chargers spread across several levels of an underground car park. The actual cost difference will depend on the building layout, cable routes and electrical requirements.

Consider load management not just total capacity

EV chargers add a new electrical load to a building that already supports lighting, lifts, ventilation, air-conditioning and other essential systems. If a large number of chargers operate at their maximum power simultaneously, the combined demand may exceed the capacity allocated for EV charging or require costly electrical upgrades.

A load management system can help distribute the available charging capacity across connected chargers. Depending on the system and its integration, charging power can be adjusted as demand changes, allowing more vehicles to charge within a defined electrical limit. This does not create additional electrical capacity. Rather, it helps use the available capacity more efficiently.

For building operators, this distinction matters: the goal is not simply to install the highest-powered chargers, but to develop a charging system that fits the building's electrical constraints and operational needs.

2. Match charging speeds to the property's use case

Not every commercial property needs the same type of EV charger. The appropriate configuration depends on how long vehicles typically remain parked, how frequently parking spaces turn over and how much charging capacity the site can support.

AC charging for longer parking durations

AC charging is commonly suitable where vehicles remain parked for several hours, such as office buildings, staff parking areas and some long-stay parking facilities. It can also be appropriate for locations where drivers are not necessarily expecting a rapid charge during their visit.

DC charging for shorter dwell times

DC fast charging may be worth evaluating at locations where drivers are more likely to need a meaningful charge within a shorter period. However, DC charging equipment generally involves higher equipment costs and may require greater electrical capacity and more substantial installation works. The best choice depends on the site's actual use case, not simply which charger offers the highest rated power.

Think about the parking experience

For a shopping mall, charging demand may vary according to visitor dwell time, tenant mix, peak shopping periods and the availability of nearby public charging alternatives. An office building may have a different pattern, with vehicles remaining parked throughout the working day. A mixed-use development may need to serve several groups with different access requirements.

Property managers should therefore evaluate the intended users, expected charging duration, parking turnover and likely demand throughout the day before deciding on the number and type of chargers. A balanced design may combine different charging speeds across the property rather than applying one configuration to every parking space. If you'd like to learn more, we think this article might interest you: Who is fast charging for? Key considerations for businesses

3. Understand the full cost of EV charging installation

The purchase price of an EV charger is only one component of a commercial installation. For property owners and asset managers, a realistic project budget should distinguish between the initial infrastructure investment and the ongoing cost of operating the charging service.

What affects installation cost?

The total cost of a project can depend on:

• Electrical infrastructure: available capacity, switchboard modifications, protective equipment and any required upgrades.
• Cabling and containment: cable length, routing complexity, vertical distribution between levels and the need for cable trays or other containment.
• Civil and reinstatement works: drilling, coring, trenching, surface reinstatement and other works required by the building layout.
• Charger selection: the number of charging points, power ratings, hardware features and installation requirements.
• Software and connectivity: charging management, remote monitoring, user access, payment functionality and network connectivity.
• Testing and commissioning: verification that the installation operates correctly and that the required documentation is completed.
• Ongoing operations: preventive maintenance, fault response, software services, payment processing and other recurring costs.

A site with readily available electrical capacity and straightforward cable routes may have a very different cost profile from one requiring extensive infrastructure upgrades across multiple parking levels. For this reason, preliminary estimates should be treated as indicative until the site has been assessed and the project scope is sufficiently defined.

Evaluate the total cost of ownership

A lower upfront installation cost does not necessarily result in the most economical solution over the life of the system. Property managers should consider the expected service life of the equipment, maintenance arrangements, software fees, energy costs, utilisation and the cost of expanding the installation later.

The commercial model also matters. Depending on the arrangement, the property owner may fund the infrastructure, share costs with a charging operator, or consider another deployment model. Each option can distribute investment, operational responsibilities and revenue differently. Before selecting an arrangement, clarify who pays for the electrical works, who owns the installed assets, who is responsible for maintenance and what happens if the charging service or commercial agreement ends.

4. Design for future expansion

EV charging demand may change as vehicle adoption grows, tenant requirements evolve and the property undergoes refurbishment. Installing a small number of chargers today may be a sensible starting point, but the initial design should also consider how the system could expand.

Plan the infrastructure in stages

A phased deployment can allow a property to introduce charging facilities while gathering real-world usage data before committing to a larger installation.

However, phased deployment works best when future requirements are considered from the beginning. This may include planning suitable cable routes, reserving space for electrical equipment, considering distribution capacity and identifying locations for potential future chargers.

Where practical, designing the supporting infrastructure for expansion can reduce the need for repeated construction work. The right approach will depend on the building's current capacity, projected demand and the cost of preparing infrastructure that may not be needed immediately.

Avoid overbuilding and underplanning

Installing more chargers than a site can reasonably use may tie up capital in underutilised infrastructure. Conversely, a design that focuses only on immediate demand may create bottlenecks or make future expansion unnecessarily expensive. A demand-led approach considers current parking patterns, expected EV adoption among users, the property's development plans and the practical limits of the electrical supply.

Load management can also help a site accommodate more charging points within a constrained power allocation, where the expected charging demand and system design allow it. The aim is to create a system that can evolve with the property rather than requiring a complete redesign as demand changes.

5. Plan around tenants, visitors and car park operations

For malls and multi-tenant commercial buildings, the installation must work within an existing operating environment. Car parks may have established traffic flows, parking controls, access restrictions, security requirements and maintenance schedules. Poorly planned works can disrupt parking operations, while an inconvenient charger layout can affect the user experience long after installation is complete.

Choose locations carefully

Charger locations should be assessed against more than proximity to an electrical supply. Consider parking bay geometry, vehicle access, cable reach, pedestrian movement, visibility, signage and the practical requirements for installation and maintenance. The design should also account for accessibility, applicable fire and life-safety requirements, and the building's own operational procedures.

For a shopping mall, the objective may be to offer convenient charging without creating unnecessary congestion around high-demand parking areas. For an office building, access control and the allocation of spaces to tenants or staff may be more important.

Minimise disruption during installation

Installation planning should account for the need to restrict parking bays, move equipment through service areas and coordinate with building management, security, contractors and other stakeholders. Where work takes place in an occupied building, agree on the work sequence, permitted working hours, access arrangements, safety controls and reinstatement requirements in advance. Clear coordination helps reduce the likelihood of avoidable disruption to tenants, visitors and daily building operations.

6. Consider the operating model before commissioning

Once the chargers are installed, the property team still needs to ensure that they remain usable, accessible and properly maintained. The operating model should be agreed before the system goes live, particularly when charging is offered to members of the public or across multiple tenant groups.

Access, payment and reporting

Depending on the intended use, a charging management platform may support user authentication, charging-session management, payment processing, usage records, remote monitoring and reporting.

These functions can help property managers understand how the infrastructure is being used and identify opportunities to improve utilisation.

For example, utilisation data may show whether demand is concentrated at particular times, whether certain chargers are frequently occupied, or whether the installed charging capacity is aligned with actual usage.

The required features will depend on whether charging is intended for public visitors, tenants, employees, fleet vehicles or a combination of users.

Remote monitoring and fault management

A charger that is installed but unavailable provides little value to a visitor or tenant. Operational planning should therefore address how faults are detected, reported, diagnosed and resolved. Remote monitoring can help operators identify certain charger or connectivity issues without requiring an immediate physical site visit. However, not every fault can be resolved remotely, so escalation procedures and onsite technical support remain important.

Before launch, establish who monitors the chargers, who handles customer enquiries, how maintenance is scheduled and how service issues are communicated to users. Where an external charging operator is involved, define the responsibilities of the operator and property management team clearly. This reduces ambiguity when equipment faults, payment issues or customer complaints arise.

7. Check Singapore's regulatory and technical requirements

EV charging installations must be planned with the applicable regulatory, electrical and safety requirements in mind.

In Singapore, the Electric Vehicles Charging Act (EVCA) and its associated requirements govern areas including charger registration, installation safety and the licensing of operators providing EV charging services.

The national EV charging standard, Singapore Standard 722 (SS 722), superseded Technical Reference 25 (TR 25) on 1 April 2026. Projects should therefore be assessed against the standards and requirements applicable to the specific installation, rather than relying on older technical references alone.

Official guidance is available from the Ministry of Transport's EV information page.

Do minimum charging provisions apply to your building?

Singapore also has minimum EV charging provision requirements for certain developments undergoing specified building or electrical works. According to the Land Transport Authority's published guidance, qualifying building works include erection or re-erection of a building and certain works that increase approved gross floor area by at least 50%. Qualifying electrical works include specified increases in approved electrical load to more than 280 kVA.

For developments that fall within the applicable criteria, the requirements include electrical infrastructure to support future EV charging and a minimum provision of installed charging points. The applicable calculations and submission requirements should be checked against the latest official guidance.

These requirements do not mean that every existing commercial building must immediately install the same number of chargers. Applicability depends on the development and the work being carried out. Property owners and their appointed professionals should confirm the requirements for the specific project with reference to the LTA's minimum EV charging provisions.

Build compliance into the project plan

Regulatory checks should take place early enough to inform the design, budget and programme. Depending on the project, the team may need to coordinate electrical design, submissions, installation documentation, testing, commissioning and the required approvals or clearances. Working through these requirements at the outset can help reduce the risk of costly design changes or delays later in the project.

8. Choose an EV charging partner that understands the whole system

Commercial EV charging involves several connected components: the electrical supply, distribution infrastructure, charging hardware, communications, management software and ongoing service arrangements. Treating these as separate purchases without considering how they work together can create integration gaps and make future troubleshooting more complicated. When evaluating a project partner, consider whether they can help with:

• Site and electrical assessment: understanding the building's constraints and the feasibility of the proposed installation.
• System design: matching charger types, charging capacity, electrical distribution and site layout to the property's requirements.
• Infrastructure integration: coordinating the chargers with cabling, protection systems, connectivity and the wider electrical installation.
• Installation and commissioning: managing the technical implementation, testing and handover documentation.
• Charging management: considering remote monitoring, access, billing and reporting requirements where applicable.
• Ongoing support: establishing clear arrangements for maintenance, troubleshooting and system performance.

The right partner should be able to explain the technical trade-offs behind the proposed solution and not simply recommend a charger model. For property teams, this makes it easier to compare proposals on the basis of system suitability, total project scope, operational requirements and future flexibility.

How Eigen Energy supports commercial EV charging projects

Eigen Energy works across EV charging infrastructure and energy systems, helping businesses evaluate and implement solutions suited to their sites and operational needs. For commercial properties, the starting point is understanding the building: its electrical infrastructure, parking layout, intended charging users and potential future requirements. These factors inform the system design, including charger selection, electrical works, installation considerations and the operational capabilities required after commissioning.

A technically suitable solution should work within the property's constraints while providing a practical path for future development. Depending on the project, this may also involve considering how EV charging can fit into a broader energy strategy alongside solar PV, battery energy storage or energy management systems. Rather than assuming that every property needs the same configuration, Eigen Energy can work with property and facilities teams to assess the requirements and determine an appropriate way forward.

Whether you manage a shopping mall, office building, mixed-use development or commercial car park, a well-planned EV charging system begins with understanding the site and the people who will use it. Eigen Energy can help you evaluate the technical considerations, explore suitable charging configurations and plan the infrastructure needed to support your property.

Speak to Eigen Energy about EV charging for your building. Contact our team to discuss your site, project requirements and next steps.

Frequently asked questions

Q1. How many EV chargers should a commercial building install?

There is no single number that suits every property. The appropriate number depends on parking capacity, expected EV adoption, visitor or tenant demand, dwell time, available electrical capacity and the project's budget. A site assessment and demand analysis can help establish a practical initial deployment and a plan for future expansion.

Q2. Does a commercial building need to upgrade its electrical supply to install EV chargers?

Not necessarily. Some buildings may have sufficient available capacity for an initial deployment, while others may require distribution board modifications, additional cabling or upgrades to their electrical infrastructure. Load management may help distribute available power across multiple chargers, but it cannot replace an electrical upgrade where additional capacity is genuinely required.

Q3. Should a shopping mall install AC or DC chargers?

The choice depends on how visitors use the car park and how quickly they need to charge. AC charging may be suitable for longer stays, while DC charging may be more appropriate where shorter charging sessions are expected. Equipment cost, electrical capacity, installation complexity and utilisation should all be considered before deciding on the mix.

Q4. How much does commercial EV charger installation cost in Singapore?

Costs vary according to the number and type of chargers, available electrical capacity, cable routes, civil works, software requirements and commissioning scope. Ongoing costs such as maintenance, connectivity and charging management should also be considered. A site assessment is the best way to develop a meaningful project estimate.

Q5. Can EV chargers be installed in phases?

Yes. A phased deployment can allow a property to start with a manageable number of chargers and use actual utilisation data to guide future investment. The initial design should still consider future electrical capacity, cable routes, equipment space and the potential cost of expanding the system.

Q6. Who is responsible for maintaining commercial EV chargers?

Responsibility depends on the ownership and operating arrangement. The property owner, facilities management team, charging operator and service provider may have different roles. The agreement should clearly identify who handles maintenance, faults, customer support, billing, reporting and regulatory obligations.

Q7. Are commercial buildings in Singapore required to install EV chargers?

Certain developments are subject to minimum EV charging provision requirements when they undergo specified building or electrical works. The requirements depend on the development and the nature of the works. Property owners should consult the latest LTA guidance and obtain project-specific advice to determine whether the requirements apply.

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