Solar still pays in Cape Town in 2026/27, but the reason has changed. The case used to rest on selling power back to the City. Today it rests on using the power you generate yourself, and the tariff changes on 1 July 2026 make that clearer than ever.
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If you are pricing a system this year, here is what changed, what it means for your bill, and what to ask your installer before you sign.
What changed on 1 July 2026
The City of Cape Town raised electricity tariffs by an average of 6.67% for 2026/27. The part that matters most to solar owners is the fixed charge. Households that register a grid-tied solar system are placed on the Home User tariff, which now carries a fixed charge of R424.30 a month including VAT, up 8.55%. That is about R5,090 a year before you use a single unit.
In return, the City kept its SSEG (small-scale embedded generation) incentive at 25c/kWh excluding VAT for 2026/27, and the residential feed-in tariff rose with the general increase. The credit is real, but it is small compared with what an imported unit costs you. A unit you generate and use is worth far more than a unit you export.
So does solar still pay?
For most Cape Town homes that use a fair amount of electricity, yes. One published 2026 analysis puts the break-even between the Domestic and Home User tariffs at roughly 610 units a month. Above that, the Home User tariff is the cheaper one anyway. Below it, your solar system has to save enough to cover the extra fixed charge.
Indicative market ranges for a 2026 installation, taken from a published Cape Town guide, look like this. Your own quote will depend on roof layout, battery size and brand.
| System | Typical installed cost | Typical payback |
|---|---|---|
| 5 kVA inverter + battery | R90,000 to R145,000 | about 4.5 years |
| 8 kVA inverter + battery | R150,000 to R235,000 | about 7 years |
| 15 kVA inverter + battery | R280,000 to R430,000 | about 6.5 to 7 years |
Treat those as ballparks, not a quote. Payback depends on how much of your day-time and evening use the system actually covers.
Design for self-consumption, not export
Because an exported unit earns far less than a used one, the best-value system for most homes is sized to your daily use:
- Match panels to your day-time load. Geyser, pool pump and washing machine timers can shift use into sunshine hours.
- Add enough battery for the evening peak. Cooking and lighting between 17:00 and 21:00 are what most households still import.
- Do not oversize for export. A bigger array only pays if you can use or store what it makes.
- Move your geyser onto cheap power. A solar-friendly geyser timer, or converting your geyser to solar, can remove a big chunk of your bill.
Registering with the City: what you must do
A grid-tied system in Cape Town has to be registered with the City as an SSEG installation before it is switched on. In practice that means:
- An installer who is registered with the City and a licensed electrician who can sign off the work.
- An electrical Certificate of Compliance for the installation, and a solar PV certificate where one applies.
- A bidirectional meter fitted by the City so that exports are measured.
- Registration and approval before you export.
Skipping this is expensive. An unregistered system can forfeit export credits, hold up a house sale, and give your insurer a reason to dispute a claim. See our solar certificate of compliance page for how we handle it.
Cape Town conditions that affect your system
- Atlantic Seaboard and False Bay coast: salt air attacks cheap mounting hardware. Ask for corrosion-resistant rails and clamps.
- Southern Suburbs and Constantia: mountain and tree shading can cut winter output. A proper site survey matters more than the panel count.
- Northern Suburbs, Durbanville and Parklands: strong south-easters in summer. Mounting and wind rating should be part of the quote.
- Helderberg and Somerset West: good sun, but check roof orientation, because many roofs face the wrong way for a simple north-facing array.
Questions to ask any solar installer in Cape Town
- Will you handle City SSEG registration and the Certificate of Compliance?
- Are your electricians registered, and will I get the certificate in my name?
- What is the inverter and battery warranty, and who services it locally?
- How much of my current usage will this cover, based on my own bills?
- What happens to my tariff when I register?
FAQ
Can I still sell solar power back to the City of Cape Town? Yes, through the SSEG feed-in tariff, but the credit is small compared with the price of the units you use. It reduces your bill rather than paying you a salary.
Do I have to register my solar system? If it is grid-tied, yes. Register before you switch it on.
Will solar move me to the Home User tariff? Published summaries of the City’s rules say the residential SSEG tariff is only available with the Home User tariff. Confirm your exact situation with us before you commit.
Is a battery worth it in Cape Town? For most homes, yes, because the evening peak is when you still import power. The right size depends on your own evening usage.
Why Cape Town homeowners and businesses choose Thermo Group
Solar is a big investment, and the quality of the design and the paperwork matters as much as the panels.
- Design around your actual bill. We size the system to how you use power, including whether battery storage is worth it for you, rather than selling the biggest system we can.
- Supply, labour and materials from one team. The panels, inverter, batteries, electrical work and installation are handled together, so one company is accountable for the whole job.
- Paperwork handled. We help with the City of Cape Town registration for grid-tied systems and supply the compliance certificate, so your system is legal, insurable and sellable.
- Home and commercial experience. We install for houses as well as commercial properties in the Cape Town area.
- Aftercare. We offer solar maintenance and fault finding once the system is running, so you are not left on your own if something goes wrong.
- A clear written quote. You see what is included and what the payback assumptions are before you commit.
Get a solar quote that includes registration
Want to know what solar would save you under the new Cape Town tariff? Send us a recent electricity bill and we will model the numbers for your home or business. Request a solar quote, see our solar installations, or read about solar maintenance and solar certificate compliance. If an existing system is not performing, our solar repairs and fault finding team can help.