Quality, Reliability and Confidence

FACTS ABOUT TIER 1 SOLAR PANELS

There are many panels out there, potentially including those that are tier one, do not match the descriptions on their datasheets and cannot meet standards their datasheets claim they have been certified for. This can include salt mist corrosion resistance, ammonia corrosion resistance1, and PID resistance2.

Of the panels tested by the Clean Energy Council, or CEC for short, it was found that:

  • 78% were under powered and could not produce the watts they were rated for.
  • 45% had substituted components that were different or inferior to what the manufacturer claimed they were made from.
  • Out of 30 manufacturers tested, 5 averaged over 20 microcracks per panel. A quality solar panel has zero microcracks.

Tier One Is Not A Guarantee Of Quality

There are plenty of people out there who will tell you that a tier one rating is not a measure of reliability, but bankability. Some of the people who are happy to tell you this sell panels that are not tier one.
It is absolutely true that tier one only means large financial organizations are willing to lend money to large scale projects that use these panels. But it is also true that no one is going to use solar panels for a large scale project if they are of poor quality.

So tier one status is an indicator of quality, but not a guarantee.

 INVERTERS

Solar inverter is the most critical component in a solar system. The reason is, all the power goes through it. So if the solar inverter goes down, then the solar system goes down. Another thing, because all the power goes through it, the efficiency pf the solar inverter will directly affect the efficiency of the solar system as a whole. And thirdly, the solar inverter is the most likely component fail early in the solar system, even a good one. So it’s absolutely critical that you don’t choose a low quality inverter but invest in a good quality inverter. This is the heart of the Solar PV system and is worth over the next 20 years that you own the solar system.

Two other most critical factors when choosing a solar inverter are: RELIABILITY and EFFICIENCY. We strongly recommend to invest in a highly Reliable Inverter.

BATTERIES

The one thing to remember about battery selection is that there is no such thing as a perfect battery that works for every application. Selecting the right battery for your application is about identifying the most important battery metrics and trading these off against others. For instance, if you need a lot of power for your application, cell internal resistance needs to be minimized, and this is often done by increasing electrode surface area. But this also increases inactive components such as current collectors and conductive aid, so energy density is traded off to gain power.  

DNV GL SOLAR PANEL SCORE CARD 2018