Black Sun Solar

Business snapshot

How this listing compares in Cape Town

Measured against the other 73 businesses we hold data for in Cape Town. Directory listings all look alike until you put them next to their neighbours.

Google rating rank

#42 of 74 locally

Rated higher than 39% of rated Cape Town businesses on this site.

Brand range

None listed

We hold no equipment brands for this business, which is a gap in our record rather than evidence they fit nothing. Ask which inverter, battery and panel brands they are accredited to install, and whether they buy through the local distributor.

Services listed

0 of the services we track

Local median is 2.

Certification

Not published

70% of Cape Town listings publish at least one.

What to ask Black Sun Solar before you sign

These questions are generated from what this specific listing does and does not tell us. They are not accusations - a gap in a directory record usually means nobody has filled it in yet - but they are the gaps you should close yourself.

• 1No certification is published on this listing. Ask for the registered electrical contractor number of whoever will issue your Certificate of Compliance, and confirm that person is the one doing the work rather than a name borrowed for the paperwork.
• 2Warranty terms are not stated. Ask for three separately: the panel performance warranty, the inverter warranty, and the workmanship warranty on the installation itself. The third is the one that fails first and the one most installers do not put in writing.
• 3Trading history is not published here. Ask how long the business has traded under its current registration, not the owner's years in the industry. A twenty-year electrician can still be running a two-month-old company, and your workmanship warranty is only as durable as the entity behind it.

What solar is worth at this location

Cape Town averages 5.2 kWh/m²/day across the year, dropping to 2.9 in June. On those figures a 5 kW array with a 5 kWh battery - the most commonly quoted household system in South Africa - generates roughly 11.3 kWh on an average winter day, 29.6 kWh in summer, and about 7 402 kWh a year. Cape Town has the sharpest summer-to-winter swing of any South African metro: a roof that clears 7 kWh per installed kW in January can fall under 3 in June. Size a Cape Town array on the June figure or the system will disappoint for exactly the four months you rely on it most. The City of Cape Town also runs its own small-scale embedded generation approval process and requires a registered, bi-directional meter before any grid-tied inverter is commissioned, which the City bills for separately. South-easter loading on exposed Atlantic Seaboard and False Bay roofs pushes mounting rail spans shorter than the manufacturer default.

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