Cessna 150 pilot reported experiencing a complete electrical failure resulting in the pilot diverting to the nearest airport where they landed safely.

Narrative

I was conducting a solo commercial cross-country flight to ZZZ1. I departed on a active VFR flight following. At approximately 24 Nautical miles south of ZZZ at 3;500 feet MSL; while being handed off from ZZZ [TRACON] to ZZZ [ARTCC]; I attempted to tune the assigned ZZZ [ARTCC] frequency. At that moment; the aircraft experienced a complete electrical failure. All electrical equipment was lost; including radios; navigation lights; beacon; landing light; and panel lighting. The engine continued to operate normally with stable RPM.I attempted corrective actions by recycling the alternator switch; however; electrical power was not restored. I immediately selected transponder code 7600. Shortly thereafter; the transponder began to lose power as well.Due to the loss of radio communication; I attempted to contact Flight Service via my mobile phone but reached an automated system without success. I then contacted a pilot colleague and the aircraft owner by phone to request priority handling and request assistance. I asked them to notify ATC; as I was unable to obtain a direct phone number for ZZZ [TRACON].The aircraft owner was located near ZZZ2. After evaluating available options; I decided to divert to ZZZ2 due to proximity and the ability to coordinate runway lighting. The owner coordinated activation of the runway lights; and another pilot launched in a Seneca aircraft to assist with lighting support.I used a handheld torch to illuminate the flight instruments during the approach. With no electrical power available; flaps were inoperative; and I conducted a no-flap landing. I landed safely at ZZZ2 without electrical power.After exiting the runway; the aircraft owner and a mechanic guided me to the parking area using handheld lights. ATC/TRACON had been informed of the safe landing.Throughout the event; I focused on maintaining aircraft control; managing workload; remaining calm; and selecting the safest available landing option.Squawked 7600 upon loss of communicationsAttempted alternator resetAttempted contact with Flight ServiceCoordinated priority handling assistance via phoneDiverted to nearest suitable airportConducted no-flap; no-electrical landing