In a PV (solar creating voltage) there are three parts:
1. The panel itself changes energy from the sun into Direct Current Voltage.
2. The charge controller takes care of making sure there is just the right amount of charging happening to the batteries you use to store energy to use later.
3. The Inverter is used to change the voltage from DC to AC.

I have two small portable systems: One system is used to keep a 12 volt electric wheelchair battery charged. I have it in the window of my radio room.
Another system I keep in the car. If I have to bug out from here or I can not get back to here then it will be used to power a few devices and to keep the car battery charged.

Both combined cost me less than $90.00. Ebay.