Anatomy of an Energy card

Energy is the fuel that powers your Pokémon's attacks. No energy, no attack. It sounds simple, and it mostly is — but how much energy you run and what kind matters more than almost anything else when you're building a deck.

Two kinds: Basic and Special

Basic Energy is the plain stuff. There's one for each of the nine types — Fire, Water, Grass, Lightning, Psychic, Fighting, Darkness, Metal, and Dragon. (Dragon Pokémon use other types' energy in modern Standard; there's no Basic Dragon Energy.)

Basic energies have no text — they just provide one energy of their type when attached. You can run as many copies of any Basic Energy as you want in your deck. The normal 4-copy rule does not apply to Basic Energy.

Special Energy has a name and an effect. They count toward the 4-copy rule like any other card.

Neo Upper Energy provides 2 Colorless energy when attached, but only while you have fewer Prize cards remaining than your opponent. That's the trade-off — Special Energy gives you something extra, but almost always with a condition attached.

The "one energy per turn" rule

This is the single most important rule about energy:

You can only attach one energy card from your hand per turn.

That's the throttle on the whole game. It's why decks care so much about energy acceleration — anything that lets you put extra energy in play without using your once-per-turn attachment (abilities, certain attacks, certain Trainer cards).

How energy goes onto Pokémon

You attach energy from your hand to any Pokémon you have in play — Active or Benched. Once attached, energy stays there until the Pokémon is knocked out, retreats, or an effect discards it.

A Pokémon attacks if it has the right energy attached and it's in the Active spot. The attack's cost shows you exactly which energy you need.

How much should you run?

A rough rule for beginners: most decks run 8–14 energy cards total. Decks with high energy costs run more; decks that splash a couple of energy run less. Dexter flags it on every deck profile if your energy count looks off for your attackers.