How is electricity generated from the sun?
Electricity is generated from the sun through solar photovoltaic (PV) cells. These cells, usually made of semiconductor materials like silicon, convert sunlight into electricity. When photons from sunlight hit the cells, they excite electrons in the semiconductor material, creating an electric current (DC). An inverter is then used to convert DC to AC, making the electricity suitable for use in homes and businesses or for feeding back into the grid. Solar panels, composed of grouped solar cells, are organized into arrays to generate more electricity.
What Factors Influence Solar Power Generation?
Several elements play a significant role in determining the energy generated from solar systems, with some having a substantial impact, while others have a more minor effect.
Major factors include:
- Panel efficiency
- Panel location (Northern panels tend to generate more electricity)
- Seasonal variations and sunlight brightness
- Time of day (Midday typically yields the most electricity)
- Shade from buildings or trees, as excessive shade reduces electricity production
Less impactful factors include:
- Panel positioning, considering angles and orientation (Facing 30 degrees North is considered 100% efficient)
- Duration of sunlight exposure (Summer typically has longer sun hours than winter)
- Inverter quality and efficiency
- Airflow around the solar system
- Accumulation of dirt, such as bird droppings
Are inverters loud?
A high quality inverter is generally quiet, whereas a cheaper inverter will likely create a hum or a buzzing sound which could be distracting- especially older models. You can find the noise data under your product sheet.
It is also advised to install the inverter near your switchboard and not near your bedroom or lightweight walls that would cause vibrations.
What is the payback period on solar systems?
The payback period for solar systems, usually 5 to 8 years for residential setups, depends on factors like upfront cost, incentives, local electricity rates, and system efficiency. While payback is crucial, solar systems can generate free electricity for over 25 years. Ongoing technological advancements are expected to further shorten payback periods.
What size should my solar pv system be?
The size of your solar system depends on various factors, and determining the appropriate size involves considering your energy consumption, available roof space, local climate conditions, and budget. It is always handy to submit a recent bill with a quote request.
Things to take into consideration when quoting are:
How many people are living in the home?
When do you use your electricity the most, during day or night?
What are your current electricity usage patterns?
To arrange a quote that is tailored and suitable to your needs click here