The short answer is yes, a home solar conversion system can provide power for stoves, kettles, and geysers. However, this will increase the overall cost for solar components as you will need to buy a large number of solar panels, solar batteries, and a more expensive and powerful inverter to keep up with the electrical demand.
A complete home solar conversion system that will be able to sufficiently power all elements and all electrical appliances without the grid, would cost hundreds of thousands of Rands.
We would recommend using solar power for lights, gate motors, TVs, computers, and all other essential electrical appliances.
Also, we would recommend using a gas stove and converting your electrical geyser to a solar thermal energy geyser which will be much more cost-efficient compared to an electrical geyser to run directly from solar panels.