EV charging
Can I put solar on a carport and charge my EV underneath in South Africa?
Yes — a engineered carport with PV is one of the cleanest “charge where you park” designs, but treat it as a structure + electrical + SSEG project, not a DIY shade cloth with panels.
Updated 27 October 2026 · Illustrative ranges — not a formal quote or legal advice.
Answer first: Dual-use parking works when the steel (or timber) is engineered for wind uplift and module weight, the DC/AC design is CoC’d, and the wallbox has a dedicated circuit. Shade-cloth frames and “temporary” carports are not PV structures.
Why the savings story is strong
You generate where the car sits. Midday surplus can feed a ~7.4 kW Type 2 wallbox before thin export credits. Home AC energy (~R3.50–R4.70/kWh band in many metros) still beats habitual public DC at ~R7+/kWh (DriveElectric / network examples, Oct 2026). Pillar maths: EV charging guide · cost to charge.
Design checklist
- Structure — engineer for local wind and hail; ask for drawings stamped as required by your municipality.
- Orientation — north bias helps annual kWh; west bias can still serve afternoon charging.
- Cable route — trench or surface conduit to the DB / hybrid; keep EVSE cable management tidy for estates.
- Wallbox — dedicated circuit, isolator, correct RCD pattern, CoC — wiring & CoC.
- Hybrid / inverter — size so house loads and the wallbox can share daytime PV without constant clipping.
- SSEG — grid-tied carport arrays still need the distributor path — SSEG registration.
Estates, sectional title and neighbours
Architectural committees often care more about the carport silhouette than the charger sticker. Body corporates need consent for common-property cable runs. Solve permission before steel is ordered — estate EV · apartment EV · sectional-title solar.
When a carport is the wrong first move
If water heating still dominates the bill, fix the geyser/heat pump first. If the roof already has excellent north space and the driveway is shaded by trees that will dirty modules weekly, roof PV plus a wallbox may be cheaper. Order of ops: install order.
Worked energy intuition (illustrative)
A commuting EV using ~18 kWh/100 km that does 40 km/day needs roughly 7 kWh/day. A well-oriented carport array in much of SA can deliver that on many weekdays before noon in summer — leaving house loads and export as separate questions. Winter Highveld is often still strong; wet Cape winters need honesty in the production file. Do not size the carport for a second speculative EV until the portal proves surplus.
Public DC at ~R7.35/kWh for a 30 kWh top-up is ~R220; the same energy at ~R4/kWh home is ~R120. Over a year of avoiding DC as a habit, the carport + wallbox stack usually clears its “nice to have” reputation — TOU / prepaid EV.
DC cable length and inverter location
Long DC runs from a far carport to a house-mounted hybrid raise voltage-drop and lightning exposure. Sometimes an AC-coupled layout or a second inverter nearer the structure is cleaner — get that from a designer, not a Facebook group. Cable sizing primer: cable sizing.
Insurance and the carport
Structures and PV may sit on different schedule lines. Photograph foundations and rails after commission; tell the insurer the carport exists — home solar insurance.
Chargers under the carport
Mount the wallbox where cable strain is low and weather rating matches the site (IP54+ outdoor norms). Prefer scheduled charging that drinks midday PV; avoid draining a small home battery into the car overnight. Brands and local stock context: home charger brands · best charger Q&A. SAEV Charge remains a strong local-stock reference with dated DriveElectric public-DC evidence (~R3.49/kWh vs GridCars ~R7.35) — still verify install quality and CoC.
Three-phase homes considering 11–22 kW should confirm the car and supply first — three-phase EV · power levels.
Planning permission timing
Order steel only after municipal/estate sketches clear. Deposits that fund unapproved structures are how projects stall with panels in a warehouse and no CoC path.
Structural and municipal detail most quotes skip
Carports sit in a grey zone between “minor building work” and full plans depending on height, coverage and municipal by-laws. Ask for:
- Engineer’s wind and uplift calculation for your wind zone.
- Foundation / chemical-anchor detail suited to the paving or soil.
- Module clamp / rail schedule matched to the purlin spacing — not a roof kit forced onto thin shade steel.
- Earthing of the steel frame bonded into the PV earthing system — earthing.
Estates often want colour, height and streetscape drawings before steel is cut. Solve that email thread before deposits leave your account.
Daytime charging vs overnight battery drain
The savings win is scheduling the wallbox into the solar window. A small home battery emptied into the car at 22:00 is resilience spent on transport. Prefer:
- Wallbox schedule / solar-divert modes that track PV surplus.
- Hard amperage caps so the house DB and hybrid stay within limits — load management.
- Essentials bus that never includes the EVSE on a thin pack — essentials.
If you mostly charge overnight on prepaid or TOU peaks, fix the tariff behaviour first — TOU / prepaid EV · prepaid tokens.
Shared driveways and visitor bays
A carport over a shared driveway or visitor bay is a governance project: who pays for energy, who books the bay, and whether Mode 2 cables from a house socket are banned. Pair this page with estate and apartment EV answers — estate HOA EV · apartment EV — before you pour foundations on common property.
Cost intuition (illustrative only)
Engineered PV carports often cost more per kWp than a simple roof mount because steel and foundations dominate. Offset that with dual use (shade + energy) and shorter cable runs to a wallbox under the structure. Compare against “roof PV + garage wallbox” on total landed cost, not panel R/Wp alone. Insurance: disclose the structure — home solar insurance.
Hail, cleaning and module choice on carports
Carport arrays sit lower and catch more dust from cars than a steep roof. Budget cleaning access (safe ladder or walkway rules) and ask whether the glass and frame rating match local hail norms. Bifacial modules can gain from pale paving albedo — only if the structure and wiring are designed for it — bifacial · cleaning: cleaning & maintenance.
Microinverters or optimisers sometimes appear on partial-shade carports (trees, double-storey walls). They add cost and failure points; demand a shade study before you pay for them. String design with honest production estimates is often enough on open driveways.
Single-phase vs three-phase under the same roof
Most commuting EVs are happy on ~7.4 kW single-phase. If the house is already three-phase and you want 11–22 kW, confirm the vehicle’s onboard charger and the carport circuit before buying steel — three-phase EV · power levels · solar phase choice.
DIY DC work on a grid-tied carport is how CoCs and insurance go missing — DIY risks · DIY charger.
Carport PV as a self-use + parking play
Carport structures can host east–west modules that stretch daytime production into EV plug-in hours while freeing the house roof. Price the steel + foundations honestly; a “free carport from solar savings” story fails if export credits were the hidden assumption. Model self-use into the wallbox first — orientation · EV from solar.
Related answers
Structural and SSEG notes for carport arrays
Carport steel must carry wind and hail loads for your metro; ask for the engineer’s letter before panels go up. Cable runs into the house DB need SPD and earthing continuity like any roof array. If the carport feeds a wallbox, declare the EV load on the SSEG / NMD conversation so diversity is designed once.
Theft risk is higher on street-facing carports — module locks, visible cameras and insurer notification matter as much as kWh — theft · EV charger cost · NMD.