FAQs

What is solar energy?
Solar energy is used in order to heat water or generate electricity. Special solar hot water panels, or PV cells, transform the energy of the Sun into thermal energy or electricity. This is a renewable and environmentally-friendly source of energy that provides free electricity.

How are solar hot water panels different from photovoltaic cells?
Solar hot water panels are used to heat domestic water or swimming pools, while photovoltaic cells produce electricity.

How photovoltaic panels work?
The main part of the system is the solar module. It transforms the sun’s energy into electricity; then the inverter changes the frequency and the voltage of the electricity.

What happens at night or when there is no sunlight?
Systems are typically connected to the network of the local electricity company and are used when the solar panels cannot produce enough energy or during night time. Solar batteries are expected to become cost feasible in coming years which could supply energy for night time and even allow disconnecting from the grid altogether.

In how many years do photovoltaic systems pay off?
It usually takes about 10-20 for photovoltaic system to pay off, not considering maintenance costs. We recommend a PPA (power purchase agreement) where you can get all the advantages of solar without the large upfront investment, as well as not having to worry about maintaining the solar system.

How long is the lifespan of the photovoltaic systems?
Solar photovoltaic systems usually last for more than 25 years, most warranties cover them for around 20 years.

Do the solar panels produce any gases or noise?
No, the solar panels do not produce any gases or pollution in day to day use.

Does it matter where the solar panels are installed?

Yes. In general, south facing is best, west facing is second best.

What happens if the roof cannot bear the burden of the solar panels?
Solar panels are typically not very heavy and usually do not put a heavy burden on the roof.