FAQs

Yes, solar photovoltaic is used to generate direct current electricity when suns radiation  fall on a solar panel while solar water heating generates heat when solar radiation is absorbed by an absorber in the solar water heating system.

Yes. But after the solar direct electricity is converted into an alternating signal using an inverter.

No, because at night there is no radiation from the sun. The energy used by a solar system at night is the one stored in the batteries.

Yes. High temperatures lead to lower power output by reducing the voltage output

There are many ways but the key ones are:

1. Ensure the panels are regularly wiped clean with clean water
2. Ensure there is cooling of the panels by installing them with an air circulation gap between the panels and the under surface
3. Ensure the solar system is installed by a qualified personnel.
4. Observing the maintenance guidelines given by the installer.

Yes, but under the advice of a qualified person so that the components are well-sized and match with each for the system to work optimally.

The individual components have varying lifespans. The panels last 20-25 years, Batteries can last 2-7 years, and Charge controllers and Inverters in the range of  about 10 years.

Possible reasons include

1. Increased use of power through new added devices or longer hours of use.
2. Signs of aging batteries which can’t retain energy for long