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Configure solarSolar + EV Charger: Charge Your Car with Your Own Sunlight
Under TNB's RP4 tariff each home kWh costs about 44.43 sen. Combining solar panels with a home EV charger lets you charge from your own daytime solar surplus, cutting most of your home charging cost (night-time charging still draws from the grid or a battery).
About RM0.17
Net gain per kWh charged from daytime solar (RM0.4443 avoided, RM0.2703 export credit forgone)
Up to RM52
Net saving per month (1,500 km)
RM6,499
Schneider Charge Pro, installed
RM2,500
Tax relief available
How Much Does EV Charging Cost in Malaysia?
The average EV consumes 15–20 kWh per 100 km. At typical Malaysian driving of 1,500 km/month, that's 225–300 kWh of charging per month — at today's tariff that's real money.
| Charging Method | Monthly kWh | Rate/kWh | Monthly Cost | Annual Cost |
|---|---|---|---|---|
| Grid charging only | 225–300 kWh | RM0.4443/kWh | RM100 – RM133 | RM1,200 – RM1,600 |
| Solar chargingWith Trexon Solar | 225–300 kWh | Solar surplus (daytime) | About RM61 – RM81 in export credit forgone | Saves about RM470 – RM630 a year |
Grid Charging Cost
RM133
per month (1,500 km/month)
Solar Charging Cost
About RM81
per month, the export credit you give up when you charge from daytime solar (300 kWh at RM0.2703)
Your Annual Savings
Up to RM630
a year, if all charging shifts to solar hours
Why is the rate RM0.4443/kWh?
Under TNB's RP4 domestic tariff (from 1 July 2025), each kWh carries a 27.03 sen Energy Charge plus 4.55 sen capacity and 12.85 sen network charges — 44.43 sen before the monthly AFA and any EEI rebate. Above 1,500 kWh a month the Energy Charge rises to 37.03 sen. EV charging adds a large monthly load, which is why charging from your own solar output is worth so much.
Which Home EV Charger Should You Install?
Three AC charger tiers cover most Malaysian home EV charging needs. All are compatible with Type 2 plugs used by BYD, BMW, Mercedes, and most EVs sold in Malaysia. Prices shown are market estimates for other brands (not stocked by Trexon); the only charger Trexon stocks is the Schneider Charge Pro at RM6,499 installed.
7 kW AC
Type 2 connector
Charge Time
~8 hours (0–100%)
Market estimate (not stocked by Trexon)
RM2,500 – RM4,500
Best For
Overnight charging, standard EVs
Most popular for home use
11 kW AC
Type 2 connector
Charge Time
~5 hours (0–100%)
Market estimate (not stocked by Trexon)
RM3,500 – RM6,000
Best For
3-phase supply homes, faster top-up
Requires 3-phase connection
22 kW AC
Type 2 connector
Charge Time
~2.5 hours (0–100%)
Market estimate (not stocked by Trexon)
RM5,000 – RM12,000
Best For
Fleet, high-usage households
Commercial-grade speed at home
3-Phase vs Single-Phase Supply
Most landed homes in Malaysia have single-phase supply, which limits charger speed to 7 kW. If you want 11 kW or 22 kW charging, you need to upgrade to 3-phase supply first (the cost is set by TNB, so ask for a quote). For most owners, 7 kW overnight is perfectly sufficient — a full charge while you sleep.
RM2,500 Income Tax Relief for Home EV Charger
The Malaysian government offers an income tax relief of up to RM2,500 for home EV charger installation costs. This is available from Year of Assessment 2022 onwards.
Who qualifies
Malaysian tax residents who purchase and install a home EV charger (EVSE — Electric Vehicle Supply Equipment).
What is claimable
Purchase cost + installation cost of the charger unit, up to RM2,500 total relief per individual.
How to claim
Declare under "Purchases of EV Charging Facilities" in your income tax return (e-Filing). Keep your invoice and installation receipt.
Effective savings
At 24% tax bracket, RM2,500 relief = RM600 actual tax saved. At 26% bracket = RM650 saved.
Real Cost After Incentives
How Much Solar Do You Need for EV Charging?
Adding an EV increases your home's energy consumption significantly. The key is to right-size your solar system to cover both your home usage AND your EV charging. Here's a practical guide.
Assumes: 15–20 kWh/100 km consumption, about 3.5 equivalent peak sun hours/day (our Peninsular model)
| Monthly Driving | EV kWh Needed | Extra Solar Needed | Recommendation |
|---|---|---|---|
| 500 km/month | 75–100 kWh | +1 kWp | About 2 extra panels on a new system |
| 1,000 km/month | 150–200 kWh | +1.5–2 kWp | Most common Malaysian EV owner |
| 1,500 km/month | 225–300 kWh | +2–3 kWp | High usage or daily commuter |
| 2,000 km/month | 300–400 kWh | +3–4 kWp | Long-distance or 2 EVs |
Rule of Thumb
Add roughly 2–3 kWp to your existing solar system for every EV driving about 1,500 km/month (about 225–300 kWh a month at 3.5 peak sun hours). Size the total system for home usage plus EV charging; our solar calculator gives the total system size for your bill.
Malaysia Peak Sun Hours
Our Peninsular model uses about 3.5 equivalent peak sun hours per day. On that basis a 5.58 kWp system generates roughly 585 kWh/month; charging an EV for 1,500 km a month adds 225–300 kWh, so size the system for both loads.
Solar Systems That Cover EV Charging
These Trexon system sizes are specifically recommended for EV owners — sized to handle both home consumption and full EV charging on Malaysian sunlight.
Why Home Charging Matters More Than Ever
Malaysia's EV market is growing fast — but public charging infrastructure is not keeping pace. Home charging with solar is the smart long-term solution.
RM0.4443
Home grid charging rate per kWh (RP4)
About RM0.27
Home solar charging per kWh (export credit forgone)
RM2,500
Tax relief for home EV charger
The Public Charger Gap
Public charging can mean queues, reliability issues and inconsistent pricing, which is one reason home charging is attractive for EV owners.
Public DC fast charger rates are set by each operator and change over time (not a Trexon price); check current operator rates, as they can be well above grid home charging.
Solar + EV Charger: The Complete System
A solar-powered home EV charging setup has three main components working together.
Solar Panels Generate Power
Rooftop panels generate DC electricity from sunlight throughout the day. A typical 10 kWp system produces about 35 kWh on a typical Malaysian day (3.5 peak sun hours).
Inverter Converts to AC
The solar inverter converts DC to AC electricity. Your home appliances use what they need in real time. Surplus goes to the grid (Solar ATAP) or to your EV charger.
EV Charger Powers Your Car
The home EV charger draws from your solar supply first, then grid if needed. Plug in during daylight to charge from solar; charging at night draws from the grid (or a home battery).
Solar ATAP and EV Charging Strategy
Under Malaysia's Solar ATAP scheme, excess solar energy is exported to TNB and credited at the Energy Charge rate (27.03 sen/kWh), limited by your import and the MAQ; unused credit is forfeited monthly. For EV owners, the smarter strategy is to consume solar directly rather than export it: charge your EV during daytime solar peak hours (10am–3pm) using a smart charger with scheduling, then use grid power overnight if needed. This maximises self-consumption and minimises export — the economics strongly favour direct self-consumption.
What Does Solar + EV Charger Installation Involve?
Solar System Installation
EV Charger Installation
Typical Timeline
Survey + Quote
1–2 days
Approvals (SEDA/TNB)
2–6 weeks
Installation
1–2 days on site (about 6–10 weeks overall, including approvals)
Commissioning
1 day
Common Questions About Solar EV Charging
Can I add an EV charger to an existing solar system?
Yes — in most cases you can add an EV charger to an existing solar installation. The key question is whether your current system is large enough to handle the extra EV load. Trexon will audit your existing system and recommend whether to add panels or simply wire in a charger.
Do I need a special solar inverter for EV charging?
No — any grid-tied solar inverter works with an EV charger. However, some premium inverters like the Huawei SUN2000 have integrated smart EV charger management that optimises solar self-consumption. A standard inverter + smart EV charger achieves similar results.
Can I charge my EV overnight if my solar panels don't produce at night?
Absolutely. Most EV owners charge overnight on grid power and use solar during the day to offset the cost through Solar ATAP credits. With a battery storage system, you can store daytime solar and use it for overnight EV charging — though batteries add RM15,000–RM40,000 to system cost.
Which EV brands are compatible with home AC chargers in Malaysia?
All EVs sold in Malaysia use the Type 2 (Mennekes) AC charging standard: BYD, BMW, Mercedes-EQ, Volvo, Hyundai, Kia, Chery, Geely, MINI, and others. Tesla vehicles in Malaysia also use Type 2 for AC charging.
Is the RM2,500 tax relief available for companies?
The RM2,500 income tax relief is for individuals (personal tax). Companies purchasing EV charging equipment for business premises may claim capital allowance instead. Consult your tax advisor for the applicable treatment.
Design Your Solar + EV Charger System
Tell us your EV model, monthly driving distance, and current electricity bill. Trexon's engineers will design a solar system sized to cover both your home and your EV — and calculate your exact payback period.
Free quote. No obligation.