Amber Power Plant
Story
The Amber Power Plant provides habitat for many electric type Pokémon.
Other
After you have the third gym badge you can return to the Amber Power Plant to face Rotom again. This time you can also catch it.
Quest
Malfunction in the power plant!
Items
Pole Ball
Paralyze Heal
Carbos
Cell Battery
Yellow Shard
Magnet
TM72 Volt Switch (quest reward)
Encounter