Yes.
Solar water heaters can increase water temperature through electric heating. Many solar water heaters now have electric heating capabilities, which can use electricity for rapid heating when needed. This function is achieved using an electric heating button or switch. Solar water heaters do not have a built-in electric heating function and a special electric heater can also be installed in the heating hole of the device. At night or when the weather is bad and you can't get enough sunlight, you can still use this device to provide fast and reliable heating.