My Solar Quotes lists only premium solar power installation companies, and the companies must be SEANZ members. These companies have done their research to find the best solar panels available, not only in terms of
Should you want to conduct your own research, please see the information below about the types of solar panels available, tier rated solar panels and understanding solar panel specifications.
The 3 main types of solar panels are; monocrystalline, polycrystalline and thin film. Monocrystalline is the most sought after
Because monocrystalline panels are more efficient, they generate more solar power within a smaller roof area. If you have limited space for solar panels you might want to consider monocrystalline solar panels.
BIPV solar replaces conventional building materials such as roof tiles, skylights and glass windows.
Only a limited number of BIPV panels have been installed in New Zealand (this is due to the substantial cost).
Examples of BIPV panels
The Zero Energy home in Auckland (pictured above) used solar tiles. Read more information here.
Above is an example of solar power skylights.
The tier system is how the solar power industry grades solar panels.
Tier 1 – Considered to be the best solar panels. Manufacturers are vertically integrated; they have control over the entire manufacturing process. They use the highest-grade silicon solar cells and are the highest performing solar panels.
Tier 2 – These panels do not necessarily have substandard quality compared to Tier 1, they just don’t have control over the whole process. They spend less on R&D, but they still keep up with the latest developments on design and construction.
Tier 3 – These manufacturers are the largest percentage in the market. Often tier three businesses only assemble the parts and source their products on the open market. These panels aren’t recommended by My Solar Quotes.
Below are just a few of the specifications to look for on solar panel data sheets.
Each solar panel manufacturer claims a specific power output for their solar panels e.g. 250W. However, manufacturers also indicate the range a solar panel is expected to exceed. Most companies indicate both
This rating describes the decreasing power output as the outside temperature increases. Temperature coefficient Pmax for Trina Honey Solar Panels is -0.41%, therefore each degree over 25˚C the maximum power output of the panel is reduced by 0.41%.
The efficiency percentage specified for a solar panel shows how much of the sun’s energy that hits the solar panel transforms into electricity. For example, the Yingli’s Panda Series 290W panels have an efficiency of 17.9%. Efficiency ratings average range is between 15% to 21%.
Generally, the more efficient a solar panel is, the higher the cost.
Most solar panel manufacturers have a performance warranty of 25 years, which indicates the manufacturer is confident that their solar panels will last 25 years, if not longer.
It is important to know that a warranty will only be honoured if the company is still in operation. If they are not in operation, the performance warranty could still be covered, so long as the company was insured when you purchased the panels.
Therefore, selecting a solar manufacturer that has a good history is worthwhile.