The answer to that question is yes, a 48V solar power system can also support smaller outdoor applications such as solar power pathway lights and solar garden lights pathway setups. This higher voltage is advantageous because it allows for longer cable runs and reduces voltage drop, resulting in more efficient power transmission. Why Choose a 48V Solar Power System Over 12V or 24V? A 48. . A 48 volt solar panel wiring diagram is a visual representation of the electrical connections and components involved in a solar power system that operates at a voltage of 48 volts.