the idea you mention has sometimes been discussed among inventors, but natural lightning is too powerful and unpredictable to get much traction in terms of building up actual devices to harness this energy form.

Something more promising is the creation of artificial ball lightning inside a reactor that convert its energy into electricity. Some of those systems simply take the light from the bright flash of ball lightning and convert it to electricity the same way as ordinary solar power works. More sophisticated approaches try to tap into more exotic ("zero point") energy from ball lightning flashes.