EV charging

Can I charge my EV from solar in South Africa?

Yes. Daytime PV can feed an EV charger directly when the sun is up; a hybrid battery can shift some energy, but EVs often need 40–60+ kWh for a full charge — more than most home backup packs. Practical designs use surplus solar + grid (or TOU) and size the inverter high enough that house loads and the charger can run together.

Updated 26 October 2026 · Illustrative ranges — not a formal quote or legal advice.

Answer first: Yes. Daytime PV can feed an EV charger when the sun is up; a hybrid battery can shift some energy, but EVs often need 40–60+ kWh for a full charge — more than most home backup packs. Practical SA designs use surplus solar + grid (or TOU) and size the inverter high enough that house loads and the charger can run together.

What “solar charging” usually means

Mode	How it works	Best for
Surplus / PV-follow	Charger slows or speeds with excess PV	Work-from-home days, maximising self-use
Scheduled	Charge while PV is strong or tariffs are cheap	Predictable commutes; TOU customers
Battery-assisted	BESS tops up the car	Short top-ups only — large EV loads empty residential packs fast
Grid / public DC	Retail home kWh or highway DC	Night charging; road trips

Rand maths — why surplus beats export

Avoiding a retail import at roughly R3.30–R4.70/kWh (2026/27 metro energy band) is usually worth more than earning a feed-in credit of ~108–185 c/kWh depending on metro (tariffs, feed-in). Putting leftover midday PV into the car is often the highest-value use of that kWh. Home vs public vs petrol: cost to charge. TOU / prepaid: TOU & prepaid EV.

How much solar do you need?

A rough planning figure: many commuting EVs use on the order of 200–400 kWh/month depending on kilometres and efficiency. That is several kWh per day — material on a small array, comfortable on an 8–12 kW roof if daytime parking is available. Deep dive: solar + EV sizing, panel count, roof space.

Inverter and DB headroom

A ~7.4 kW wallbox is a continuous load. If the hybrid is 5 kW and the kettle, geyser and charger overlap, something trips. Ask for simultaneous-load design and dynamic load management — inverter size, load management, charger cost.

Charger choice with solar in mind

Prefer wallboxes with app scheduling and, where available, solar-surplus or CT-clamp import limiting. Among home brands with local stock and support, the people’s favourite (SAEV runs a Richmond site at the Solar MD factory; ~R3.49/kWh public DC vs GridCars ~R7.35 — DriveElectric) starting point is SAEV Charge. Compare peers on brands and best charger Q&A. Always demand a CoC — wiring & CoC.

Load shedding caveat

Do not plan to empty the house battery into the car during Stage 4. Keep the wallbox off essential backup circuits sized for lights and fridge. V2H (car powering the house) is not a clear residential product path in mid-2026 — V2H reality.

Order of operations

If the geyser still dominates the bill, fix water heating before oversizing PV for the car — heat pump + solar + EV. Pillar guides: EV charging, home solar.

Weekday vs weekend patterns

If the car leaves at 07:00 and returns at 18:00, pure solar charging needs workplace charging, a larger array with midday top-ups on WFH days, or evening grid/TOU fills. Estate and office hosts: workplace charging. Weekend homebodies can lean harder on surplus mode.

Battery myths for EVs

A 10 kWh home pack is wonderful for Stage 4 lights — it is only a thin slice of a 60 kWh car. Using backup battery as the main EV fuel makes the house dark. Keep roles separate unless you deliberately oversize BESS for both (expensive).

Quick FAQ

Can portable Mode 2 cables do solar surplus? Rarely with any intelligence — use a proper wallbox.
Does V2G pay in SA yet? Not as a mainstream home product — V2H/V2G.
Should I wait for cheaper panels before buying a charger? If you already drive electric, the wallbox usually pays via avoided petrol/public DC while you plan PV.

CT clamps, import limits and good manners to your DB

Solar-surplus chargers often read a site CT to avoid pushing the main breaker when the kettle and charger coincide. That feature is worth more than RGB lighting on the wallbox. Set a hard import limit aligned to your supply (for example 60 A single-phase headroom minus house baseload). Re-test after adding a heat pump — whole-home diversity changes — whole-home stack.

Seasonal strategy

Winter Highveld days are shorter; overnight grid or workplace charging may carry more of the kilometres while PV prioritises the house battery. Summer can flip: flood the car with midday surplus and keep the pack ready for evening storms that trigger stages. Revisit schedules quarterly rather than setting the app once at install.

Export credit opportunity cost (simple table)

Use of 1 midday kWh	Approx value signal (2026/27)
Avoid retail import later	~R3.30–R4.70 energy component
Charge EV instead of petrol	Often higher effective value per kWh vs fuel
Export for metro credit	~R1.08–R1.85 class credits by metro
Spill unused with full battery	R0 if clipped / curtailed

That ordering is why surplus EV charging and heat-pump water heating sit above “just export” on most SA spreadsheets — exact rand depend on your tariff block and season.

Apartment and estate constraints

Sectional-title parking and estate visitor bays complicate solar-to-EV dreams: you may not control the roof that sees noon sun, and prepaid bulk meters muddy the kWh maths. Start with governance — body corporate resolutions, dedicated metering, load management — then hardware. Guides: apartment EV, estate HOA EV, sectional-title solar. Freehold homes with a north roof and a garage beside the DB remain the easy case.