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Pokemon Red and Blue Power Plant, Route 21, and Viridian Gym Walkthrough

Earth Badge

Power Plant, Route 21, and Viridian Gym section for the Pokemon Red and Blue walkthrough with wild Pokemon, trainers, items, hidden items, coordinates, and boss strategy.

By Damodar Sharma Updated June 19, 2026 Walkthrough

Optional Zapdos and Power Plant loot, Surf north/south Route 21, then defeat Giovanni in the reopened Viridian Gym. This page is a standalone section for Phase 8: Earth Badge, with source-backed Red/Blue encounter, trainer, item, hidden item, and boss data.

Source maps

Power Plant, Route 21, and Viridian Gym.

Wild rows29 Trainers18 Items9

Route plan

Power Plant is optional but important for completion and Electric catches. Viridian Gym is Ground-type heavy and rewards Water/Grass coverage.

Wild Pokemon

Area / subarea Version Method Pokemon Level Odds Condition / requirement
Power PlantBothTall grass / cave floor Voltorb Red and Blue sprite Voltorb 21-2330%Encounter rate 10; no time-of-day split in Red/Blue.
Power PlantBothTall grass / cave floor Magnemite Red and Blue sprite Magnemite 21-2330%Encounter rate 10; no time-of-day split in Red/Blue.
Power PlantBothTall grass / cave floor Pikachu Red and Blue sprite Pikachu 20-2425%Encounter rate 10; no time-of-day split in Red/Blue.
Power PlantBothTall grass / cave floor Magneton Red and Blue sprite Magneton 32-3510%Encounter rate 10; no time-of-day split in Red/Blue.
Power PlantRedTall grass / cave floor Electabuzz Red and Blue sprite Electabuzz 33-365.5%Encounter rate 10; no time-of-day split in Red/Blue.
Power PlantBlueTall grass / cave floor Raichu Red and Blue sprite Raichu 33-365.5%Encounter rate 10; no time-of-day split in Red/Blue.
Route 21BothTall grass / cave floor Rattata Red and Blue sprite Rattata 21-2330%Encounter rate 25; no time-of-day split in Red/Blue.
Route 21BothTall grass / cave floor Pidgey Red and Blue sprite Pidgey 21-2330%Encounter rate 25; no time-of-day split in Red/Blue.
Route 21BothTall grass / cave floor Raticate Red and Blue sprite Raticate 3015%Encounter rate 25; no time-of-day split in Red/Blue.
Route 21BothTall grass / cave floor Pidgeotto Red and Blue sprite Pidgeotto 30-3215%Encounter rate 25; no time-of-day split in Red/Blue.
Route 21BothTall grass / cave floor Tangela Red and Blue sprite Tangela 28-3211%Encounter rate 25; no time-of-day split in Red/Blue.
Route 21BothSurf Tentacool Red and Blue sprite Tentacool 5-40100%Encounter rate 5; no time-of-day split in Red/Blue.
Route 21BothOld Rod Magikarp Red and Blue sprite Magikarp 5100%Any fishable water tile.
Route 21BothGood Rod Goldeen Red and Blue sprite Goldeen 1050%Any fishable water tile after getting Good Rod.
Route 21BothGood Rod Poliwag Red and Blue sprite Poliwag 1050%Any fishable water tile after getting Good Rod.
Route 21BothSuper Rod Staryu Red and Blue sprite Staryu 1525%Super Rod group 8.
Route 21BothSuper Rod Horsea Red and Blue sprite Horsea 1525%Super Rod group 8.
Route 21BothSuper Rod Shellder Red and Blue sprite Shellder 1525%Super Rod group 8.
Route 21BothSuper Rod Goldeen Red and Blue sprite Goldeen 1525%Super Rod group 8.
Power PlantBothStatic item-ball Pokemon Voltorb Red and Blue sprite Voltorb 40StaticLooks like an item ball before battle.
Power PlantBothStatic item-ball Pokemon Voltorb Red and Blue sprite Voltorb 40StaticLooks like an item ball before battle.
Power PlantBothStatic item-ball Pokemon Voltorb Red and Blue sprite Voltorb 40StaticLooks like an item ball before battle.
Power PlantBothStatic item-ball Pokemon Electrode Red and Blue sprite Electrode 43StaticLooks like an item ball before battle.
Power PlantBothStatic item-ball Pokemon Voltorb Red and Blue sprite Voltorb 40StaticLooks like an item ball before battle.
Power PlantBothStatic item-ball Pokemon Voltorb Red and Blue sprite Voltorb 40StaticLooks like an item ball before battle.
Power PlantBothStatic item-ball Pokemon Electrode Red and Blue sprite Electrode 43StaticLooks like an item ball before battle.
Power PlantBothStatic item-ball Pokemon Voltorb Red and Blue sprite Voltorb 40StaticLooks like an item ball before battle.
Power PlantBothStatic Pokemon Zapdos Red and Blue sprite Zapdos 50StaticInteract with the overworld Pokemon.
Power PlantBothStatic legendary Zapdos Red and Blue sprite Zapdos 50StaticInteract with Zapdos at the back of Power Plant.

Trainers

Route order Trainer Team Reward Optional / rematch note
1. Route 21 (4, 24)Fisherman trainer spriteFishermanParty #7
Seaking Red and Blue sprite Seaking Lv. 28 Goldeen Red and Blue sprite Goldeen Lv. 28 Seaking Red and Blue sprite Seaking Lv. 28 Seaking Red and Blue sprite Seaking Lv. 28
$980One-time trainer; no rematch in Red/Blue.
2. Route 21 (6, 25)Fisherman trainer spriteFishermanParty #9
Magikarp Red and Blue sprite Magikarp Lv. 27 Magikarp Red and Blue sprite Magikarp Lv. 27 Magikarp Red and Blue sprite Magikarp Lv. 27 Magikarp Red and Blue sprite Magikarp Lv. 27 Magikarp Red and Blue sprite Magikarp Lv. 27 Magikarp Red and Blue sprite Magikarp Lv. 27
$945One-time trainer; no rematch in Red/Blue.
3. Route 21 (10, 31)Swimmer trainer spriteSwimmerParty #12
Seadra Red and Blue sprite Seadra Lv. 33 Tentacruel Red and Blue sprite Tentacruel Lv. 33
$165One-time trainer; no rematch in Red/Blue.
4. Route 21 (12, 30)Cue Ball trainer spriteCue BallParty #9
Tentacool Red and Blue sprite Tentacool Lv. 31 Tentacool Red and Blue sprite Tentacool Lv. 31 Tentacruel Red and Blue sprite Tentacruel Lv. 31
$775One-time trainer; no rematch in Red/Blue.
5. Route 21 (16, 63)Swimmer trainer spriteSwimmerParty #13
Starmie Red and Blue sprite Starmie Lv. 37
$185One-time trainer; no rematch in Red/Blue.
6. Route 21 (5, 71)Swimmer trainer spriteSwimmerParty #14
Staryu Red and Blue sprite Staryu Lv. 33 Wartortle Red and Blue sprite Wartortle Lv. 33
$165One-time trainer; no rematch in Red/Blue.
7. Route 21 (15, 71)Swimmer trainer spriteSwimmerParty #15
Poliwhirl Red and Blue sprite Poliwhirl Lv. 32 Tentacool Red and Blue sprite Tentacool Lv. 32 Seadra Red and Blue sprite Seadra Lv. 32
$160One-time trainer; no rematch in Red/Blue.
8. Route 21 (14, 56)Fisherman trainer spriteFishermanParty #8
Shellder Red and Blue sprite Shellder Lv. 31 Cloyster Red and Blue sprite Cloyster Lv. 31
$1,085One-time trainer; no rematch in Red/Blue.
9. Route 21 (17, 57)Fisherman trainer spriteFishermanParty #10
Seaking Red and Blue sprite Seaking Lv. 33 Goldeen Red and Blue sprite Goldeen Lv. 33
$1,155One-time trainer; no rematch in Red/Blue.
10. Viridian Gym (2, 1)Giovanni trainer spriteGiovanniParty #3
Rhyhorn Red and Blue sprite Rhyhorn Lv. 45 Dugtrio Red and Blue sprite Dugtrio Lv. 42 Nidoqueen Red and Blue sprite Nidoqueen Lv. 44 Nidoking Red and Blue sprite Nidoking Lv. 45 Rhydon Red and Blue sprite Rhydon Lv. 50
$4,950One-time trainer; no rematch in Red/Blue.
11. Viridian Gym (12, 7)Cooltrainer M trainer spriteCooltrainer MParty #9
Sandslash Red and Blue sprite Sandslash Lv. 39 Dugtrio Red and Blue sprite Dugtrio Lv. 39
$1,365One-time trainer; no rematch in Red/Blue.
12. Viridian Gym (11, 11)Blackbelt trainer spriteBlackbeltParty #6
Machop Red and Blue sprite Machop Lv. 40 Machoke Red and Blue sprite Machoke Lv. 40
$1,000One-time trainer; no rematch in Red/Blue.
13. Viridian Gym (10, 7)Tamer trainer spriteTamerParty #3
Rhyhorn Red and Blue sprite Rhyhorn Lv. 43
$1,720One-time trainer; no rematch in Red/Blue.
14. Viridian Gym (3, 7)Blackbelt trainer spriteBlackbeltParty #7
Machoke Red and Blue sprite Machoke Lv. 43
$1,075One-time trainer; no rematch in Red/Blue.
15. Viridian Gym (13, 5)Cooltrainer M trainer spriteCooltrainer MParty #10
Rhyhorn Red and Blue sprite Rhyhorn Lv. 43
$1,505One-time trainer; no rematch in Red/Blue.
16. Viridian Gym (10, 1)Blackbelt trainer spriteBlackbeltParty #8
Machoke Red and Blue sprite Machoke Lv. 38 Machop Red and Blue sprite Machop Lv. 38 Machoke Red and Blue sprite Machoke Lv. 38
$950One-time trainer; no rematch in Red/Blue.
17. Viridian Gym (2, 16)Tamer trainer spriteTamerParty #4
Arbok Red and Blue sprite Arbok Lv. 39 Tauros Red and Blue sprite Tauros Lv. 39
$1,560One-time trainer; no rematch in Red/Blue.
18. Viridian Gym (6, 5)Cooltrainer M trainer spriteCooltrainer MParty #1
Nidorino Red and Blue sprite Nidorino Lv. 39 Nidoking Red and Blue sprite Nidoking Lv. 39
$1,365One-time trainer; no rematch in Red/Blue.

Items And Hidden Items

Item Type Area / direction Coordinate Requirement
CarbosVisible item ballVisible item ball at (7, 25) in Power Plant.(7, 25)Reach this tile; HMs or story flags may be needed for late-game dungeons.
HP UpVisible item ballVisible item ball at (28, 3) in Power Plant.(28, 3)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Rare CandyVisible item ballVisible item ball at (34, 3) in Power Plant.(34, 3)Reach this tile; HMs or story flags may be needed for late-game dungeons.
TM25 ThunderVisible item ballVisible item ball at (26, 32) in Power Plant.(26, 32)Reach this tile; HMs or story flags may be needed for late-game dungeons.
TM33 ReflectVisible item ballVisible item ball at (20, 32) in Power Plant.(20, 32)Reach this tile; HMs or story flags may be needed for late-game dungeons.
ReviveVisible item ballVisible item ball at (16, 9) in Viridian Gym.(16, 9)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Max ElixerHidden itemHidden on the searchable tile at (17, 16) in Power Plant.(17, 16)Press A on the hidden tile or use the Itemfinder nearby.
PP UpHidden itemHidden on the searchable tile at (12, 1) in Power Plant.(12, 1)Press A on the hidden tile or use the Itemfinder nearby.
TM27 FissureGym rewardDefeat Giovanni for the Earth Badge.-Defeat Giovanni for the Earth Badge.

Boss Strategy

Boss / branch Team Reward Danger notes Practical counters
Giovanni trainer spriteGiovanniGiovanni - Viridian Gym
Rhyhorn Red and Blue sprite Rhyhorn Lv. 45 Dugtrio Red and Blue sprite Dugtrio Lv. 42 Nidoqueen Red and Blue sprite Nidoqueen Lv. 44 Nidoking Red and Blue sprite Nidoking Lv. 45 Rhydon Red and Blue sprite Rhydon Lv. 50
$4,950Rhydon is level 50 and the badge gate before Victory Road.Surf, Razor Leaf, Ice Beam, and strong Water/Grass coverage sweep. Watch Dugtrio's Speed if you bring frail Electric or Fire Pokemon.

Completion Checklist

  • Catch Zapdos if desired.
  • Clear Route 21 trainers/wilds.
  • Defeat Giovanni for Earth Badge.
  • Verify the wild table's version splits before leaving if you are filling the Pokedex.
  • Use the item rows as a visible-item and hidden-item sweep before moving to the next section.

Sources

  • pret/pokered: wild encounters, trainer parties, trainer money, map object events, hidden event items, rods, trades, and prize Pokemon.
  • Encounter odds aggregate the Gen I ten-slot rates: 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256.
  • Red/Blue has no day/night encounter column; tables use Version, Method, and Condition instead.

Related articles

Pokemon Red and Blue Walkthrough HubPhase 8: Earth BadgePrevious: Cinnabar GymNext: Route 23 and Victory Road