monocrstalline vs polycrystalline -solar panels types
Different types and brands of solar panels are available in the market.

Do you wonder what the difference between them is?

Do you feel difficulty in understanding the technical language when you look at the specifications?

If yes, then you are at the right place to understand the difference in simple words and make sure yourself that you are not spending a significant amount of your hard-earned cash on a lemon.

Solar panels have several characteristics. Following is the list of most important specifications that all panels have, but the values differ greatly.

1. Solar Panel Test Conditions:

As we all know, panels are tested in laboratories for efficiency under Standard Test Conditions which are as follow:

  • The temperature of the cell should be 25ºC.
  • Solar irradiance level should be 1000W per square meter. (This is the amount of light energy falling on a given surface at a given time.)
  • Air mass 1.5 spectra.

If you do not fully understand the parameters above, then don’t worry, the main point to consider is, when the panels are on your roof, all these conditions will keep on changing. So, you need to look at the NOCT (explained in the next point).

2. Solar Panel Nominal Operating Cell Temperature (NOCT)

NOCT is the temperature reached by open-circuited cells with irradiance set at 800W/m2, ambient temperature 20°C and speed of wind at 1m/s. The approach is used to test the panels in somewhat real-world conditions. Because panels usually operate in hotter or colder conditions, different irradiance levels compared to what the Standard Testing Conditions of the panel are.

Typically, the NOCT value is 45ºC. You should look for NOCT value to be 45ºC or lower because the lower value means the panel will stay cooler under real conditions. The more the panel stays cooler, the more efficient it would be.

3. Solar Panel Temperature Coefficient

The lower the temperature coefficient, the much better that module will undoubtedly carry out as temperature increases. The lower temperature coefficient is necessary for all areas, not merely warm environments. When the sunlight is shining, rooftop temperature levels can quickly go beyond 77 ° F even with ambient temperatures below 50 ° F. You can compare the temperature coefficient of different panels by their respective information sheets.

4. Solar Panel Tolerance

Solar Power Tolerance is a measure of the amount of electricity a panel can generate above or below its rated capacity at any time. It’s often ±5%, which means the panel could produce 5% less or more than the rated capacity. So, it is something that should be kept in mind.

5. Solar Panel Warranties

Solar Panels are designed and made to operate in a real environment, which means panels need to deal with changing hot and cold weather conditions, wind, UV radiations. The standard warranty for panels is 25 years. It is quite a long time, but you should keep in mind that whether that retailer or manufacturer would be around or in business for such a long time to honour the warranty. So, we suggest to go for reputable, financially sound and stable companies and do check the historical track record.

Solar Panel Efficiency

The ability of the panel to convert sunlight into electricity is termed as Solar Panel Efficiency. Click on the link below to know in detail about the efficiency of solar panels.

Learn the most efficient solar panel manufacturers and models currently in the Market 2020.

Click on the names below to know company details and the solar panel datasheets that they provide.

  1. Aleo German Made Solar Panels 
  2. REC panels
  3. Q CELLS
  4. LG Panels
  5. Trina Panels
  6. SOLARWATT Panels
  7. Opal Solar Panels
  8. HT-SAAE Solar Panels
  9. Canadian Solar Panels
  10. Astronergy Panels
  11. EGing Solar Panels
  12. LONGi Solar Panels
  13. Opal Solar Panels
  14. Risen Solar Panels
  15. Sunport Power Solar Panels
  16. Suntech Power Solar Panels
  17. Sunpower Solar Panels
  18. Jinko Solar Panels
  19. JA Solar Panels
  20. ET Solar Panels

Click here to know the details of Inverters and batteries of top brands.

Looking for Solar Power in NSW?

Well, here is the detailed guide covering everything you need to know before investing in solar. Click here.

If you want solar with Battery storage then we have also compiled a guide to help you choose the battery storage as per your requirement.

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