Cross the water by Cerulean City and SURF down and around to the Power Plant. There are lots of Electric Pokémon here. You can get Pikachus(!!), Raichus(!!!), Voltorbs, Magnemites, and Electrabuzzes (RED). (some Voltorbs are hidden as Poke Balls, they are Level 40 each! There is also an Lv.41 Electrode masquerading as a Poke Ball) Near the end is Zapdos, the Legendary Electric Bird.
