Why is there no convincing evidence that electrically charged particles can increase precipitation?

In the field of meteorology, there is no convincing evidence to support the assertion that the release of electrically charged particles can influence precipitation from clouds or fogs.1

While research has demonstrated that releasing large quantities of ions near the ground can influence the electrical properties of small cumulus clouds, this does not translate to an ability to affect larger cloud systems or increase rainfall. The complex nature of clouds and the high variability of precipitation in both space and time make it difficult to isolate the effects of such interventions, and current scientific understanding does not provide a basis for using electrical charges to augment precipitation.12

Efforts to modify weather through electricity remain distinct from established cloud-seeding techniques, which primarily involve the use of substances like silver iodide or dry ice to target supercooled water droplets.23