Solar Scorcher

The Solar Scorcher is a unique energy weapon in Fallout 2.

Gameplay
A major benefit of this weapon is that it utilizes free and unlimited ammunition derived from sunlight. Further, there is no AP cost associated with reloading this weapon. However, the weapon can only be recharged while exposed to sunlight or bright light. Being in a dark environment (e.g. outside during nighttime or in a cave) will prevent this weapon from recharging.

Location
It can be found as loot at the special encounter Guardian of Forever.