Tesla Powerwall 3, installed in South Africa from R169,900
13.5 kWh battery and an 11 kW inverter in one unit. Whole-home backup, sub-second changeover, and one ten year Tesla warranty covering both. On a valid claim you pay us nothing for labour or travel.
A complete Powerwall 3 service, start to finish
Site assessment, system design, installation, commissioning and support. Every system is technician-installed and electrician-certified, with a SANS 10142-1 Certificate of Compliance signed by our Master Installation Electrician.
- Free site assessment and load profile audit
- System design matched to your actual usage, not a template
- SSEG application handled with your municipality or Eskom
- Tesla app setup, remote monitoring and warranty claims managed on your behalf
- Cash, instalment finance or rental options
Is the Powerwall 3 right for your house?
Not every home needs one, and we'd rather tell you now than after a site visit.
It's the right fit if
- You're on single phase. Most South African homes are. The Powerwall 3 backs up the whole house rather than a handful of circuits somebody chose for you in 2022.
- Your house pulls hard. 11 kW continuous and 185 A motor start means aircon, pool pump, borehole and electric oven, not just lights and the fridge.
- You want one company to phone. On most systems the inverter and the battery are separate products with separate warranties and separate claim routes. Here it's one unit and one warranty, so there's no argument about whether the inverter or the battery caused a fault. We lodge the claim and, because Tesla reimburses us for warranty labour, we don't invoice you for the callout or the swap.
- You already have panels. The inverter and battery get replaced. Your array stays where it is.
It's the wrong fit if
- You need backup on all three phases. You can run one Powerwall 3 per phase and offset your bill across all three while the grid is up. During an outage only the nominated backup phase carries loads, so three units gives you 40.5 kWh installed but 13.5 kWh you can actually use. If whole-house three phase backup is what you want, a Sigenergy or Victron system does it properly and we'll quote you one.
- You're buying on cost per stored kilowatt-hour. BSL and Freedom Won will be cheaper. You're paying for integration, the app and the warranty, and that's a fair thing to decide against.
What a Powerwall 3 actually costs, installed
Every package below is a complete job. Hardware, installation, Certificate of Compliance and SSEG support. No line items appear later.
Powerwall 3 + Gateway 2
The battery and inverter package. Adds whole-home backup to a house with or without existing solar, and replaces a failing inverter and battery in one unit. 11 kW inverter, 13.5 kWh battery, Gateway 2, installation and CoC.
- Tesla Powerwall 3 and Gateway 2
- Technician-installed, electrician-certified
- SANS 10142-1 CoC for the installed work
- Tesla app setup and monitoring
- 10 year manufacturer warranty
- Warranty claims managed on your behalf
Priced separately: SSEG registration from R8,500, and any remedial work needed to bring an existing installation up to standard. Both are quoted in writing before anything starts. See below.
SSEG registration, from R8,500
Every grid-tied system under 100 kVA has to be registered with Eskom or your municipality, whether or not it exports. That's a separate job from the installation and we price it separately, because it involves an on-site compliance inspection, an NRS 097-2 inverter test report, a single line diagram, a Certificate of Compliance and the submission itself. Where an existing installation needs remedial work to pass, we quote that in writing before we start. More on SSEG registration
Powerwall 3 + 12 Solar Panels
- 11 kW inverter
- 13.5 kWh battery
- 12 × 600 W solar panels
- Full installation and CoC for the work
Up to 1,100 kWh a month. Suits a bill of roughly R4,000 to R5,000.
Powerwall 3 + 18 Solar Panels
- 11 kW inverter
- 13.5 kWh battery
- 18 × 600 W solar panels
- Full installation and CoC for the work
Up to 1,700 kWh a month. Suits a bill of roughly R5,000 to R6,000.
Dual Powerwall 3 + 24 Panels
- 22 kW combined inverter
- 27 kWh battery
- 24 × 600 W solar panels
- Full installation and CoC for the work
For larger homes with bills of roughly R6,000 to R8,000 a month.
Not sure which fits? Our energy specialists will design a system around your actual load profile at no cost. Book a free assessment
The Powerwall 3 replaces your inverter and battery. The panels stay.
Thousands of South African homes bought solar during the load shedding years, and plenty of those installers have since shut their doors. The panels still work fine. The inverter's faulting, the batteries have lost half their capacity, and nobody answers the phone.
You don't have to start again.
- Your inverter trips the moment the grid dropsGateway 2 handles the changeover in under a second, and 11 kW runs the whole house rather than three circuits somebody picked years ago.
- Your batteries are down to half capacity after three yearsLFP chemistry, ten year Tesla warranty, 70% capacity guaranteed at the end of it.
- Your array is smaller than your bill needsUp to 20 kW DC across 6 MPPTs, so you can add panels later without buying another inverter.
If your original installer has disappeared, start with a My Solar Friend rescue audit from R1,950. We inspect what you've got, tell you honestly what's worth keeping, and credit the audit fee against the work if you go ahead within 90 days.
On three phase with an existing three phase grid-tied inverter? That inverter connects ahead of the Gateway, not on the backup side, or it drops two phases during an outage and alarms out. Ask us before you commit to anything.
What makes the Powerwall 3 different
Whole home, not selected circuits
Most batteries back up a handful of circuits. With 11 kW continuous and 185 A motor start, one Powerwall 3 runs an average South African home including the aircon and the borehole pump.
Solar and battery inverter in one box
Panels connect straight to it via DC coupling. No separate solar inverter, fewer components, less that can fail, and a cleaner wall.
Sub-second changeover
Gateway 2 detects grid loss and disconnects in under a second. No reboots, no lost work, no alarm false-positives.
Storm Watch
Tesla monitors the forecast for your location and charges to 100% before severe weather arrives. Equally useful ahead of a load shedding escalation.
Scales to 54 kWh
Start with one and add up to four units in parallel for 54 kWh and 44 kW, enough for the largest homes or a small commercial site.
One warranty, one claim
Ten years and 70% capacity guaranteed, with unlimited cycles for solar self-consumption, time-of-use shifting and backup. One warranty covers the inverter and the battery together, and on a valid claim you pay us nothing for labour or travel because Tesla reimburses us directly.
Built for load shedding, and for what comes after it
Load shedding is why most South Africans buy a battery, but tariffs are why they keep it. Eskom is rolling out time-of-use pricing to residential customers, and the Tesla app charges from the grid at off-peak rates and discharges during peak automatically.
A single Powerwall 3 carries an average home through a Stage 6 slot without touching the geyser schedule. During daylight your panels keep generating, so the battery refills between slots.
Technical specifications
Verified against Tesla's official Powerwall 3 datasheet.
| Electrical | |
|---|---|
| Usable energy capacity | 13.5 kWh per unit |
| On-grid continuous power | 11.04 kW AC |
| Off-grid peak power | Up to 15.4 kW |
| Solar input (DC) | Up to 20 kW DC, 6 MPPTs, 60 to 550 V DC |
| Heavy-load motor start | 185 A LRA |
| Battery chemistry | Lithium iron phosphate (LFP) |
| Round-trip efficiency | Approx 89% DC-coupled |
| Scalability | Up to 4 units in parallel, 54 kWh / 44 kW |
| Phase | Single phase. One unit per phase on a three phase supply, with backup on the nominated phase only and charging from that phase's solar only. |
| Mechanical and environmental | |
| Dimensions (H × W × D) | 1,105 × 609 × 193 mm |
| Weight | 130 kg |
| Mounting | Floor or wall, indoor or outdoor |
| Operating temperature | −20 °C to +50 °C, de-rated above 40 °C |
| Ingress rating | IP67 battery and electronics, IP55 wiring compartment |
| Warranty | 10 years, ≥70% capacity retention. Unlimited cycles for solar self-consumption, time-based control and backup use. |
Performance varies with installation conditions and local grid configuration. Our system designers confirm exact specifications during the site assessment.
From first call to Certificate of Compliance
Free design assessment
We inspect your distribution board, roof space, and daytime versus evening load profile, and review three to six months of bills to size the system properly. Usually 45 to 60 minutes. This is a design and quoting visit, not a repair or fault-finding visit, see the terms below.
System design and quotation
Our system designers build the design around your peak load and backup priorities, and future-proof it so it can expand later without rework. You get a line-item quote.
SSEG registration, quoted separately
For grid-tied installations we handle the Small-Scale Embedded Generation submission with your municipality or Eskom, from R8,500. That covers the compliance inspection, the NRS 097-2 test report, the single line diagram and the submission. Municipal and Eskom fees vary by area and we confirm the current figure for yours in your quote.
Installation
Technician-installed and electrician-certified. All wiring, mounting, breaker sizing and earthing to SANS 10142-1 and NRS 097-2-3, then inspected and signed off by our Master Installation Electrician. A typical residential install takes one to two working days.
Commissioning and app setup
We configure Gateway 2, set your backup reserve and load priorities, then walk you through the Tesla app on your own phone.
CoC and handover
You receive a SANS 10142-1 Certificate of Compliance signed by our Master Installation Electrician, full system documentation, and the ten year Tesla warranty registered in your name.
Ongoing support
We monitor performance remotely, coordinate warranty claims directly with Tesla on your behalf, and answer the phone. For the life of the system, not the first year.
What you actually control
Live energy flow
Watch power move between panels, battery, house and grid in real time.
Time-based control
Charge at off-peak rates, discharge at peak, automatically.
Backup reserve
Set the minimum charge held back for outages, and change it by season.
EV charging
Charge your car from stored solar. Works with the Tesla Wall Connector and most Type 2 chargers. We also install Sigen EV chargers.
Powerwall 3 against the alternatives we also install
We supply all of these. If a different system is the better fit for your site and budget, we'll tell you.
| Feature | Tesla Powerwall 3 | Sigenergy SigenStor | BSL / Freedom Won | Sunsynk / Deye |
|---|---|---|---|---|
| Integrated solar inverter | Yes, single unit | Yes, modular | No, external inverter | Hybrid inverter, separate battery |
| Continuous output per unit | 11 kW | 5 to 25 kW | Inverter-dependent | 5 to 16 kW |
| Motor start capability | 185 A LRA | Approx 120 A | Inverter-dependent | Inverter-dependent |
| Three phase backup | One phase only, even with three units | Yes | Yes, with three phase inverter | Yes, with three phase model |
| Warranty | 10 years, unlimited cycles, one warranty covering inverter and battery, no labour charge to you on a valid claim | 10 years | 5 to 10 years | 5 to 10 years, varies |
| Warranty claim route | One unit, one claim | One system, one claim | Separate inverter and battery claims | Separate inverter and battery claims |
| Installed price, entry system | From R169,900 | Quoted per site | Typically lower | Typically lower |
Synergy installs Tesla, Sigenergy, Victron, Sunsynk and Deye, BSL and Freedom Won. We design the right system for each site, not the most expensive one.
10 year Tesla warranty
Ten years with a guaranteed 70% minimum capacity, and unlimited cycles for solar self-consumption, time-of-use shifting and backup. Tesla repairs, replaces or refunds at their election. We lodge and manage the claim rather than handing you a support number, and we don't bill you for our labour or travel on a valid claim because Tesla settles that with us.
Compliance and CoC
Every installation is signed off with a SANS 10142-1 Certificate of Compliance covering the work we carried out, issued by our Master Installation Electrician. That's an installation CoC, not a whole-house certificate. If your existing wiring needs work to comply, we'll tell you what and quote it separately. Jacques Venter holds the PV GreenCard and Synergy is registered on the programme.
Monitoring and support
Remote diagnostics for the life of the system. If we spot an underperforming string or a faulty unit, we contact you first.
Three ways to pay
Cash
Fastest payback and maximum lifetime saving. No finance cost, and every kilowatt-hour goes straight to your bottom line.
Instalment finance
Spread the cost through a partner provider and own the system outright at the end of the term. Most people find the repayment is partly offset by the drop in their Eskom bill.
Rental asset finance
No deposit. A fixed monthly rental that usually compares well with your current electricity spend, with the option to take ownership at the end.
All finance is facilitated through accredited South African providers and subject to credit assessment.
What our clients say
"Thank you Jacques and Jaco from Synergy Energy Solutions. Your professionalism and excellent service resulted in a great solar installation and solution. We can vouch for both residential and commercial."
Rob De Oliveira"After I have been scammed previously by a 'reputable' company, I was unsure where to turn next. Synergy was recommended and from day one they exceeded my wildest expectations."
Suzette Truter"What a pleasure to deal with Synergy, it's a company with experience and after-care service. Jacques always takes my calls (and there were many) during and after the installation, always willing to assist, always monitoring our system for optimal usage."
Edmund CarlesPowerwall 3 questions
How much does a Powerwall 3 cost in South Africa?
Is the price different if I already have solar?
Is SSEG registration included in the price?
What does a free site assessment actually include?
Can I install a Powerwall 3 on a three phase house?
During an outage it's different. Only the phase nominated as the backup phase carries loads. The units on the other two phases stop, and only the solar wired to the backup phase's Powerwall keeps charging. So three Powerwalls on a three phase house is 40.5 kWh installed and 13.5 kWh you can actually use during load shedding, on one phase of the house.
There's a wiring consequence too. An existing three phase grid-tied inverter has to connect ahead of the Gateway rather than on the backup side, because the backup side only carries one live phase during an outage and a three phase inverter that loses two phases will alarm out.
None of that makes it a bad system, it just makes it the wrong system for someone who wants the whole house covered. If that's you, a Sigenergy or Victron three phase setup does it properly and we install both.
Can I add a Powerwall 3 to my existing solar system?
Will it run my geyser and my aircon?
How soon can you install?
What exactly does the ten year warranty cover?
Will I be charged for a warranty callout?
Does the Powerwall need an internet connection?
Can I rely on it for medical equipment?
What happens if I move house?
What happens if my Powerwall fails? Who do I actually call?
We deliberately don't publish a turnaround time. These are imported units and anyone quoting you a guaranteed number of days is quoting you something they don't control. What we'll commit to is that you deal with us throughout and we tell you where things stand rather than going quiet.
It's worth understanding why this works the way it does. Tesla relies on its certified installer network for after-sales and pays installers for warranty callouts, which is exactly why buying from a certified installer matters. An installation done by someone outside that network can void the warranty entirely under Tesla's own terms. And if we ever became unreachable, Tesla South Africa is on 087 550 3480 and the warranty stays with the unit, transferring to a new owner with proof of ownership.
Do I get a Certificate of Compliance, and what does it cover?
Do I need to tell my insurer?
Is the Tesla Powerwall 3 worth it in South Africa?
Does the Powerwall 3 work during load shedding?
How many Powerwall 3 units do I need?
How does the Powerwall 3 compare to a Sunsynk or Deye system?
How does the Powerwall 3 compare to a SigenStor?
Can I add more solar panels later?
How long does the installation take?
Does Synergy install outside Gauteng?
Is Synergy an approved Tesla installer?
Our industry memberships and certifications
Synergy Energy Solutions is accredited by South Africa's leading electrical, solar and battery industry bodies. Every one of these is independently verifiable, so you don't have to take our word for it.
ECA
Member of the Electrical Contractors' Association of South Africa, the leading industry body for registered electrical contractors.
Verify on the ECA site →
PV GreenCard
Synergy is registered on the PV GreenCard programme and Jacques Venter holds the qualification personally. It's the industry-led quality label for small-scale solar PV installations in South Africa.
About PV GreenCard →
SAPVIA
Member of the South African Photovoltaic Industry Association, the recognised body setting installation, training and quality standards nationwide.
Verify on the SAPVIA site →
Tesla Certified Installer
Approved Powerwall 3 supplier and Tesla Energy Certified Installer, trained and authorised by Tesla to design, install and service Powerwall 3 systems in South Africa.
Find us on Tesla's installer list →Not sure if Tesla is right for you?
We're a multi-brand installer. SigenStor, Victron, Deye and Sunsynk are all part of our approved range, so if a different system is a better fit for your home, your roof or your budget, we'll tell you.
SigenStor Residential
AI-powered 5-in-1 home energy system with modular battery expansion, smart-home integration, proper three phase backup and optional integrated DC EV charging.
Learn about SigenStor →Victron + Freedom Won
Proven, battle-tested solar and backup systems with Freedom Won and BSL batteries, ideal for homes, farms and off-grid properties.
See Victron systems →Deye & Sunsynk Hybrid
Among South Africa's most-installed hybrid inverter brands. A proven, cost-effective route to reliable backup power and solar savings, with flexible battery sizing.
See Deye & Sunsynk →Compare the systems
Tesla, SigenStor and Victron measured against each other on power, storage, expansion and backup behaviour, so you can see the trade-offs in one place.
View the comparison →Driving an EV, or planning to? We install Sigen AC and DC EV chargers alongside any of these systems, including bi-directional vehicle-to-home.
Get a Powerwall 3 quote
Free design assessment, no obligation. We'll design a system around your actual usage and your roof, and our Master Installation Electrician issues your SANS 10142-1 Certificate of Compliance.
What a free assessment covers, and what it doesn't
Free: a design and quoting visit. We measure your DB and roof space, review your bills, size a system and quote it. Around 45 to 60 minutes, within our service radius of Centurion, Table View and Polokwane. Further afield we agree travel upfront.
Not free: fault-finding, testing, diagnostics or any hands-on work on an existing installation. If your current system is faulting and you need it diagnosed rather than replaced, that's a My Solar Friend diagnostic visit from R1,950, and the fee comes off the repair if you go ahead within 90 days.
We'd rather be clear about this upfront than turn up and disagree about it on your driveway.
Free, no obligation, no spam.
Prefer to talk? Call 010 601 6464 or WhatsApp 069 272 5602