NevGridSolutions

EV Charging Guide

EV Charging for Complexes and Estates

A practical guide to EV charging for complexes and estates, covering electrical capacity, load management, shared charging, billing and body corporate policy.

The short answer: Most complexes were not designed with EV charging in mind, but that does not mean EV charging is impossible. The right starting point is a site assessment, a clear charging policy and infrastructure that can grow as more residents move to EVs.

EV charging in a complex or estate is very different from installing a charger at a normal free-standing house. The charger itself is usually the easy part. The bigger challenge is the infrastructure around it.

Most complexes and estates were built before EV charging was ever a consideration. Their electrical systems were designed around the loads expected at the time, not around several vehicles potentially charging for hours at the same property.

That does not mean the answer is no. It means the first charger should not be treated as a once-off installation. It should be treated as the start of a system that may have to support five, ten or twenty vehicles later.

Start with the property, not the charger

Before a body corporate or estate writes a rule or approves an installation, it needs to understand what the property can actually support. A useful assessment should answer practical questions such as:

  • How much electrical capacity is available now, and where are the real limits?
  • How are the units and common areas supplied and metered?
  • Which residents have private garages or access to their own distribution boards?
  • Which parking bays are on common property or are only allocated to residents?
  • Where can future cable routes, EV distribution boards, meters and communications equipment be installed?
  • What happens when the second, fifth or twentieth resident asks for charging?

Once those answers are known, the complex can make decisions based on its actual infrastructure instead of assumptions.

Limited power does not automatically mean no EV charging

Available capacity will be one of the biggest concerns at older complexes. If ten residents each install a 7.4 kW charger and every charger is allowed to run at full power at the same time, the additional demand can become significant.

This is where adaptive or dynamic load management becomes important. A properly designed system can monitor the available capacity and adjust EV charging around the rest of the property. When more power is available, charging can increase. When the building load rises, charging can reduce. If several vehicles are connected, the available charging capacity can be shared between them.

Load management does not create more electricity. It makes better use of the capacity that is already available and can delay or avoid an unnecessary supply upgrade in the right application.

Private garages and shared parking need different answers

Some complexes are relatively simple. A resident has a private garage, the unit has its own distribution board nearby and the charger can be supplied from that resident’s own electrical installation. Subject to the normal assessment, approval and installation requirements, that can be a practical individual solution.

Other properties are completely different. A resident may have a dedicated parking bay in a basement or open parking area but no practical way of supplying it from the unit’s own distribution board. In that case, the better long-term answer may be shared EV charging infrastructure supplied from the common electrical system.

That could include a dedicated EV distribution board, common cable routes, managed chargers, user identification, central load management and a backend system that records who used what.

A practical way to think about the options

SituationPossible approachWhat still needs to be decided
Private garage close to own DBIndividual charger from the resident’s own supply where technically suitableApproval, cable route, protection, ownership and future rules
Allocated bay on common propertyShared or centrally supplied managed chargerMetering, access, tariff, maintenance and common-property use
Several residents requesting chargersDedicated EV infrastructure with load managementAvailable capacity, expansion plan, backend and cost recovery
New estate or major refurbishmentDesign EV capacity and containment into the project from the startFuture charger numbers, diversity, communications and commercial model

Billing has to work for everybody

Once chargers are supplied from common infrastructure, there has to be a fair way of allocating the electricity and the cost of operating the system. The answer cannot be that every resident subsidises the people who own EVs, but it also does not make sense to make home charging unnecessarily expensive.

Modern charging platforms can identify users through RFID, an app or another authorised method and record the energy used during each charging session. That gives the complex a proper basis for billing rather than relying on estimates.

The charging tariff can then be agreed around the actual electricity cost and the real cost of providing the service. Depending on the arrangement, that may include backend fees, billing, communications, maintenance, inspections, repairs and recovery of part of the infrastructure investment.

A sensible model can still give residents a charging rate that is attractive compared with normal public charging while allowing the body corporate or estate to recover some of the cost of providing and maintaining the system. The exact rate is a commercial decision and will vary from site to site. What matters is that it is transparent, reasonable and understood before the system goes live.

The resident should not have to manage the complexity

There may be a lot happening behind the scenes: load management, metering, user identification, billing, network communication and fault monitoring. The resident should not have to manage all of that.

From the driver’s side it should remain simple: park, plug in, identify yourself if required and charge. The technology and backend should take care of the rest.

This is where a proper charging platform matters. Autel has equipment and management options designed for managed charging applications, including load-management capability and OCPP connectivity on relevant products. OCPP provides a standard way for compatible charge points and charging-management systems to communicate, which gives a site more flexibility when a backend platform is required.

Complexes need a charging policy before the first request arrives

This is probably the most important part of the whole discussion. A complex should not wait until the first resident arrives at a trustee meeting asking for permission to install a charger. By then everybody is trying to make decisions under pressure.

The policy should already give direction on questions such as:

  • Who may apply for a charger and what information must be submitted?
  • When is a site or electrical assessment required?
  • What installation and compliance requirements apply?
  • When may common property be used for cable routes or charging equipment?
  • Who pays for the charger, infrastructure, maintenance and future alterations?
  • How is electricity measured and billed where a common supply is used?
  • What happens when a unit is sold or a parking allocation changes?
  • How are future charger requests handled without redesigning the system every time?

For sectional-title schemes, changes to management or conduct rules have to follow the prescribed governance process. The technical EV charging framework should therefore be developed together with the managing agent and, where necessary, suitable legal or governance advice.

A blanket “no” is not a long-term plan

There may genuinely be properties where the existing electrical infrastructure cannot support additional EV charging without major work. If that is the outcome of a proper assessment, the body corporate at least has a technical basis for its decision and can explain what would have to change before charging becomes possible.

But simply writing a rule that says EV chargers are not allowed does not make the issue disappear. Residents are still going to buy electric vehicles and the question will keep coming back.

The better approach is to first establish what is technically possible and then build the rules around that. Perhaps individual chargers are possible in certain garages. Perhaps shared charging is the only practical option. Perhaps only a limited number can initially be supported. Perhaps dynamic load management is required. Or perhaps an infrastructure upgrade will eventually be necessary.

An assessment gives the complex options. It also makes the rules easier to defend because they are based on the actual property rather than a general fear of EV charging.

Plan for ten chargers when installing the first one

This does not mean buying ten chargers when only one resident owns an EV. It means avoiding decisions today that make every future installation expensive.

If an EV distribution board is being installed, allow for expansion where practical. If containment is being run through a basement, consider the future cable routes. If a load-management system is being selected, check how many chargers it can support. If communications are required, design them as part of the system instead of adding them one charger at a time.

A little additional planning on the first installation can save a great deal of disruption later.

Managing agents should be part of the plan

This is not only a body corporate issue. Managing agents are often the people who receive the requests, guide trustees, manage contractors and deal with the practical questions across several properties.

A repeatable EV charging framework gives them a much better starting point. It means they can explain the process to residents, know when a technical assessment is required and avoid inventing a new answer every time another owner buys an EV.

For new estates and developments, the opportunity is even better. Designing the electrical capacity, containment and charging strategy into the property from the beginning is far easier than retrofitting everything later.

Start before it becomes a problem

EV adoption in South Africa is still developing, but complexes and estates should not wait for the problem to arrive before deciding what to do about it.

Assess the property. Understand the available capacity. Decide how private and shared charging will work. Put a fair billing model in place where it is needed. Plan for expansion and then put clear rules around the system.

The goal is not to make EV charging difficult. It is to make sure it works for everybody involved: the resident who needs to charge, the body corporate that has to protect and manage the property, and the service providers who have to keep the system working.

Talk to NevGridSolutions

NevGridSolutions can assist body corporates, homeowners’ associations, managing agents and developers with EV charging assessments, charging-system planning, load management, shared charging infrastructure and backend integration. We can also provide the technical input needed to help a scheme develop a practical EV charging policy around what the property can actually support.

Using suitable Autel charging equipment together with our backend and technical partners, the aim is to provide a solution that can start at the size the property needs today and grow with it over time.

065 556 4000 | info@nevgridsolutions.co.za | www.nevgridsolutions.co.za

Frequently asked questions

Can a body corporate simply refuse all EV charger installations?

A property may have genuine technical or governance reasons for limiting an installation, but a blanket refusal is not a substitute for understanding the site. A technical assessment can establish what is possible, what conditions are needed and whether shared infrastructure is a better answer. Scheme-specific rule changes should follow the applicable governance process.

Does every EV owner in a complex need their own charger?

No. Where residents have suitable private garages and their own supply, individual chargers may work. In shared or basement parking, managed common charging infrastructure may be more practical and easier to expand.

How can a complex stop EV chargers from overloading the electrical supply?

Dynamic or adaptive load management can limit and share charging power according to the capacity available at the property. The system still needs a proper electrical assessment and defined maximum limits; load management cannot correct undersized infrastructure.

Who should pay for electricity used at shared EV chargers?

The charging user should normally be identifiable and the energy used should be recorded. A site can then apply an agreed tariff that covers the electricity and, where appropriate, backend, maintenance and infrastructure-recovery costs.

Can residents be charged less than a normal public charging rate?

Potentially, yes. The tariff is a commercial decision for the site and service arrangement. A residential shared-charging model can be structured to provide value to the resident while still recovering the genuine cost of running and maintaining the system.

When should a complex start planning for EV charging?

Before the first difficult request arrives. The property does not need to install a full charging network immediately, but it should understand its capacity, decide how applications will be handled and put a clear policy in place.

Can NevGridSolutions help a managing agent or body corporate develop an EV charging policy?

Yes. NevGridSolutions can provide the technical assessment and charging-system input needed to build a practical policy. Legal or governance wording should still be checked through the appropriate scheme-management process where required.

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