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Complete Guide To EV Home Charging In Singapore

Driving an electric car is a great way to reduce CO2 emissions. Want the convenience of charging it at home? Here's all you need to know about EV home charger requirements, types, best chargers & installers, installation process, cost calculation and more.
Complete Guide to Charging Your Electric Car at Home

Electric cars may still be new in Singapore, but uptake is fast-growing. We spoke to Paul Welsford, Vice-President of the Electric Vehicles Association of Singapore. He noted that in the second half of 2021 alone, the number of Electric Vehicles (EVs) have more than doubled. Charging infrastructure is rapidly increasing to encourage this shift.

Electric Car Outlet Requirements

The planned 40,000 installations of public EV charging points will take several years to complete. Installing your own dedicated EV charger at home saves you the hassle of finding public charging stations now. This is an option for private landed property or MCSTs (Management Corporation Strata Title) residents.

However, you can’t simply plug an electric car into your normal wall socket. In Singapore, you’ll need to engage a Licensed Electrical Worker (LEW) to install and certify your charging station.

Types of EV Chargers

AC vs DC Charging

There are two types of EV charging: Alternating Current (AC) and Direct Current (DC). Without going into technicalities, what you need to know is that AC charging is cheaper but slower than DC. Commercial DC chargers can bring an empty car battery up to 80% charge in as little as half an hour. 

AC chargers on the other hand can take around 8 hours for a full charge, varying wildly by power. This isn’t really a problem as you generally park your car overnight at home for that long anyway. You also won’t need to charge it everyday as one full battery charge usually lasts at least 300km. That’s about 4-6 times the average daily distance Singaporeans drive. Hence, AC is preferred for EV home chargers as it is the most economical. 

Longer range electric cars boast a range as high as 650km, so you’ll need to charge even less frequently. There are of course, additional factors your battery life is dependent on. If you’re an adrenaline junkie accelerating at every opportunity, expect faster battery drain.

In Singapore, AC and DC plugs are standardised. AC uses Type 2 inlets and DC is predominantly CCS2. As such, you can use the same charger for different cars, but should pay attention to your car’s optimal voltage.

Electrical Outlet Installation
Source: Pexels

Charger Specifications 

An EV charger’s kW (kilowatt) rating is a measure of its charging speed. A lower voltage EV home charger has a rating of 7.4 kW and below. Higher voltage chargers are 11 to 22 kW and above, which are suited to full-electric cars with faster speeds.

Usually, homeowners install a wall mounted charging station in their car porch, as opposed to standing, to conserve floor space. Your installer will help you choose the best position for your charger based on your power supply and how you park your car.

Some electric car dealers bundle the car and charging unit installation together. Whether you purchase them together or separately, your best charger is what matches the charging capacity of your car. We’ve compiled a list of popular installers and chargers in Singapore suitable for homes below.

Best EV Home Chargers in Singapore

  1. Wallbox

Wallbox’s latest EV charging offering is the Commander 2, with an electrical power of 7.4 to 22 kW. It weighs 2.4kg without the cable. Its black or white body, touchscreen user interface, app and wi-fi connectivity make it an appealing choice.

  1. EVBox

EVBox offers a range of smart charging solutions. For instance, the EVBox Connect app allows you to monitor and control your charging session remotely. Their EV home charger design, the EVBox Elvi, is offered in charging powers 7.4, 11 and 22 kW. It weighs 3 to 11kg with and without the cable.

  1. EO

EO prides itself on the small size of its chargepoint. Its mini models weigh under 1.5kg without the cable. Unfortunately, this means it only offers a 7 kW charging range – though this is still sufficient for overnight charging. It’s best for electric car models with corresponding charging capacity and owners who want their charger to blend in. 

An additional concern is that EO has yet to be issued Singapore’s Letter of No Objection (LNO). Regardless, some LEWs will still sign off such chargers for private use as it complies with TR25:2016 or the relevant International Electrotechnical Commission (IEC) standards, and passes essential tests as per the Technical Compliance Checklist.

Best EV Home Charger Installers in Singapore

  1. Watt

Watt is a preferred installer of Wallbox, you can contact them at their website for a site evaluation.

  1. EVSE Singapore

EVSE Singapore is part of the Novexx Group of companies, providing integrated engineering solutions. They are a partner installer of EO. At this time of writing, they offer four 7.2 kW EO models, costs ranging from about $1260 to $2500.

  1. Eigen

Eigen Energy is a systems integrator in renewable energy solutions. Aside from electric vehicle charging infrastructure, they also specialize in solar photovoltaics and battery storage systems.

  1. QuickCharge

QuickCharge covers the design, supply and installation of your EV home charger. Buying and installing their Aurora 7 EV charger would cost an estimated $2,600. They even offer the opportunity to become Charging Point Operators, making money by selling electricity to drivers.

EV Home Charger
Source: Unsplash

As more entrants come into the EV charging market, this list will grow and change. For example, Tesla has its own home charging unit but this has not been launched in the Singapore market.

Installation Process

Step 1: Request Installer Site Evaluation

The installer will assess your distribution board, cable routing and ascertain a suitable location for your charging station. Importantly, they should determine the charging capacity of your home.

Step 2: Select EV Charger and Installer

Your best charger depends on your electric car model’s charging capacity, and that of your home. You should select the recommended charging capacity for your car model and home. Refer to our list above to start off your search.

Step 3: Finalize Design Proposal

Based on your preferences and property layout, your engineer will propose engineering works, application methods, and cable concealment.

If you are representing an MCST property or condominium, you will need to submit an additional construction permit. Private landed properties do not require this. Your installer will assist you with the necessary documentation.

Step 4: Installation Work

Your installer will position your EV charger by drilling and clipping the cable to the wall. While installing and connecting it to your main household supply, the power supply will be briefly turned off. This process will only take a few hours.

Step 5: Licensed Electrical Worker Certify and Hand Over Installation

The LEW brought in must test the safety of and certify the EV charging station, switchboard and wiring. If your home is under an MCST, the building LEW will also need to complete the approval sign off. The charger is now yours, and you should periodically make arrangements to inspect and maintain the charging station.

Cost & Savings Calculation

Installation & Charger Costs

How much does it cost to install your EV home charger? As a rough gauge, it can range between $1,000 to $4,000 for EV charging stations of different charging capacities. Additional costs for cabling depend on how long you need to pull the cables for the car and charger design.

Electricity Costs Calculation

Now, you might be thinking: with Singapore’s electricity prices going up, how does charging an EV affect your home’s electricity costs? Let’s crunch the numbers.

Electricity consumption varies depending on the car model. Let’s compare two very popular electric and internal combustion engine car models. The average annual mileage for cars in Singapore is about 17,500km. Fuel or electricity costs are calculated based on SP Group’s electricity prices ($0.2580/kWh including GST) and average petrol prices ($2.55/l) as of Nov 2021.

Car ModelFuel Economy / Electricity per Kilometre
From One Motoring Fuel Cost Calculator
Fuel / Electricity Cost
Tesla Model 30.144 kWh/km$650
Toyota Corolla 1.6 Altis0.061 litre/km$2,722

The Tesla Model 3, highly popular in Singapore since Q3 2021, is extremely energy efficient. It will cost you about $650 in additional home electricity bills annually. For the typical landed homeowner consuming 1,200 kWh of electricity per month, this means you may be expecting your electricity bills to go up by 20%.

Electricity is still much cheaper than fuel however, which along with government rebates, make getting an EV worth considering. The Toyota Corolla 1.6 Altis, a best-selling ICE car, will cost beyond $2,000 more in fuel costs annually. If cost is your motivation, you should also factor in higher road tax, insurance and COE premiums.

If reducing your carbon footprint is your motivation though, how green will your electric car be?

Solar Panel Charge Electric Car
Source: Adobe Stock

For the environment, an electric car saves 1.4kg of CO2 emissions per kWh on average. But to really make them zero-emissions, you can make sure they’re drawing on renewable electricity. As a landed property owner, you have the option to make this cleaner choice with solar panels.

Clean Energy – Solar Simulator

Installing solar panels on your roof might sound scary, but getting solar is actually very easy! With this online solar simulator tool, you can calculate your roof’s solar potential and electricity savings instantly.

solarai solar simulator estimate

Just like electric cars, solar has gotten a lot cheaper in recent years with better technology. As your electricity costs increase dramatically from charging your electric car, solar is a better cost-saving investment than ever. Both let you reduce your carbon footprint significantly and save money in the long run. 

Electric vehicles and solar panels – a match made in heaven!

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Mebelle Aw
Mebelle Aw
A Content & Marketing Associate at Solar AI Technologies, she's a recently graduated linguist trying her best to live a low-carbon lifestyle. She believes in making sustainable alternatives an everyday habit.
Mebelle Aw
Mebelle Aw
A Content & Marketing Associate at Solar AI Technologies, she's a recently graduated linguist trying her best to live a low-carbon lifestyle. She believes in making sustainable alternatives an everyday habit.
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