This article will break down the most important aspect of the specification sticker located behind every Renogy solar panel. 

Max Power at STC: This is how much power the panel is rated at the Standard Test Condition, which is 1000 W/m².

Open Circuit Voltage (V_oc): This is the panel’s voltage level when it is not hooked up to a controller and battery. It is important when sizing systems with controllers as panels will have this value for a short period of time when the system is hooked up. Also, this is important when troubleshooting a solar panel.

Operating Voltage (V_mp): This is the voltage level of the panel when it is set up and operating. This is important for calculating wire gauge size and wire length.

Operating Current (I_mp): This is the current being produced when the panel is set up and operating. This is important for calculating wire gauge size, wire length, and controller sizing.

Short-Circuit Current (I_sc): This is the panel’s voltage level when it is not hooked up to a controller and battery. This is important when troubleshooting a solar panel.