For solar panels connected in parallel total power is calculated as follows.
Connect solar panels in parallel or series.
Total connected power 140w 150w 150w 150w 590w unlike solar panels connected in series the different wattage parameters do not effect the overall outcome of the array.
The positive wires are connected to a positive connector within a combiner box and the negative wires are connected to the negative connector.
Combining different solar panels in series.
In fact it s the exact opposite of connecting in series.
When solar panels are wired in parallel the positive terminal from one panel is connected to the positive terminal of another panel and the negative terminals of the two panels are connected together.
Add up to combined power 150w 150w 150w 150w 600w.
For photo voltaic components attached in parallel absolute power is determined as cited below.
Solar devices are normally attached in parallel to achieve greater output current.