“Solar” covers two genuinely different systems that solve different problems, and it’s a common point of confusion when homeowners start getting quotes.
Solar geysers heat water directly
A solar geyser uses roof-mounted collectors to heat water directly using the sun, with no electricity conversion involved. It reduces geyser-related electricity usage specifically – often the single biggest electricity cost in a home – but does nothing for lighting, plugs, or backup power during an outage.
Solar PV generates electricity
A solar photovoltaic (PV) system converts sunlight into electricity that can power anything in the home, and – paired with battery storage – can provide backup during load shedding. It’s a bigger investment than a solar geyser but far more flexible.
Which one makes sense for you?
If your main goal is cutting the cost of heating water, a solar geyser is the more targeted, lower-cost fix. If you want backup power during outages or want to offset your whole electricity bill, PV is what you actually need – the two aren’t interchangeable, and some homes benefit from both.
Frequently asked questions
Can I have both a solar geyser and solar PV?
Yes, and it’s a sensible combination – the geyser handles water heating efficiently while PV covers the rest of your electricity needs.
Does a solar geyser need an electrical compliance certificate?
The electrical connection for the geyser’s backup element does, though the solar heating component itself is primarily a plumbing installation.
Not sure which solar option suits your home? Get a free quote.