Yes, this compressor cooler can be connected to a solar panel as it is powered by 12 V DC. It is designed for a 12/24 V DC power supply, which allows it to be connected to solar panels with a corresponding battery and voltage regulation. The cooler employs a compressor and has a moderate power consumption, which makes it suitable for mobile use with solar power. Please note that a suitable battery and charge controller are required for operation with a solar panel to ensure a stable power supply.