08/09/2026
ENERGY NEWS & UPDATES | Why your solar system may still be using grid power to heat your geyser⚡
Going solar doesn’t automatically mean your geyser will stop using electricity from the grid.
MyBroadband article highlights an important consideration for homeowners: a typical electric geyser can draw around 3–4kW while heating water. When heating happens in the early morning or evening, when solar generation is low and household demand is high - the system may rely on grid power.
The article also points out that simply adding a geyser to a home solar system can require additional inverter capacity, battery storage and solar panels. Geyser timers can help shift heating into daylight hours, but they may not account for other household loads running at the same time.
The takeaway?
Solar isn’t just about how many panels you have. System design, load management and choosing the right water-heating technology all matter.
For homeowners looking to reduce their reliance on grid electricity, a properly designed solar water-heating system can be a more targeted approach to tackling one of the biggest energy users in the home.
👉 Explore Apollo Solar Technology's solutions: https://apollotechnology.co.za/
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Source: BusinessTech, 2026.
https://mybroadband.co.za/news/industrynews/643818-why-your-geyser-might-still-be-using-grid-power-even-with-a-solar-system.html
South Africans are enjoying significant savings from their solar systems – except when it comes to water heating.
