Vanometric power cell

The vanometric power cell is a World quest reward power generator that constantly provides 1000W for free and can be installed anywhere.

Acquisition

Vanometric power cells cannot be constructed nor bought from traders. Instead they can only be acquired as a reward for performing quests. Note that quest rewards are selected with a weighted random generator, so there is no way to guarantee access to an vanometric power cells in a given play-through. Anecdotally, it is often reported that the increased number of reward options added by the DLC dilute the reward pool with more options.

Summary

Vanometric power cells provide a constant 1,000W of power without requiring refueling of any kind, or requiring any particular terrain or weather. They can also be freely uninstalled and reinstalled

They are still susceptible to solar flares and other similar effects.

Analysis

Since it is 100% reliable, you can power high-priority equipment (such as base defenses or climate control) in case other power sources fail.
Small and portable features allows to conveniently power "off-grid" equipment (such as mining drills) without the need for long conduits.
Can be loaded into caravans or transport pods to power turrets in an offensive capacity.
It can also be used to charge back-up batteries.