When a new mechanic is added to Pokémon Go, Niantic actually adds multiple new features to make it work. Primal Reversion is one such mechanic that does that, as it only applies to two species and needs you to collect Primal Energy for it to work at all.
First introduced in Pokémon Omega Ruby and Alpha Sapphire, Primal Reversion acts as a transformation for Groudon and Kyogre. Much like Mega Evolution, Primal Pokémon take on a new appearance, gain new abilities, and otherwise improve their battle performance. Pokémon Go keeps that Mega-similarity by requiring you to collect Primal Energy to activate the transformation. It also has a similar cost, cooldown, and level system to Mega Evolutions—so keep that in mind when using it.
As you look to add Primal Groudon and Primal Kyogre to your team, here is how you can go about collecting Primal Energy in Pokémon Go.
How to collect Primal Energy for Primal Groudon and Primal Kyogre in Pokémon Go
Ever since the mechanic was first introduced during Go Tour: Hoenn in February 2023, the only ways to collect Primal Energy is through Primal Raids and specific Research tasks that typically only appear during events.
The most reliable way to collect Primal Energy is by defeating Primal Groudon and Primal Kyogre in Primal Raid Battles. Much like Mega Raids, Primal Raids will be their own classification outside the five-star raid system Niantic uses. Unfortunately, these aren’t hosted very frequently, so you need to take advantage of them when they do pop up.
In addition to raids, you can also get Primal Energy by completing specific Research tasks. These research tasks will likely be few and far between outside of events that feature Primal Groudon and Primal Kyogre, so make sure to complete them when they do become available. This will be the easiest way to earn Primal Energy if you don’t have a team ready to take on the Primal Legends in raids.
How to quickly get Primal Energy in Pokémon Go
If you want to quickly rack up Primal Energy in Pokémon Go you will need to pay attention to the event schedule.
Unless Niantic adds a new way to farm this special energy, your best bet to stockpile enough Primal Energy to use Primal Reversion on your Groudon or Kyogre multiple times without worrying about using it up is completing all of the research that offers Primal Energy as a reward and participating in as many Primal Raids as possible.