Understanding Microinverters and Power Optimizers

Microinverters and power optimizers are two options for solar panel and sensor setups, and they work in unique ways: Microinverters manage each solar panel or sensor individually to maximize efficiency. They are more expensive and take more effort to install. Power...

Black on Black Panels

These are panels that are all black usually found in new construction installs.  I will guess that 100% of all new installs want these claiming that they are more “aesthetic.”   The aluminium frame is anodized black, the panel itself doesn’t have...

Measuring VOC

When we say we “test” all of our panels, we mean we test the output of the individual panels by themselves, without anything attached to them—that is, without a “load” (e.g., not connected to an inverter, charge controller, batteries, etc.). These external components...

UL Listing

United Listings are a US private entity that certifies various products for safety.  They certify solar panels and in the past this certification # was UL- 1703. In Europe, they have a similar entity called CE.  Recently (dont know exactly when) UL and CE came...

Solar School

Off Grid News   News and Facts  Get InvolvedDonate UL Listing United Listings are a US private entity that certifies various products for safety.  They certify solar panels and in the past this certification # was UL- 1703. In Europe, they have a similar entity...