- Do you have to attack if you have enough Energy cards attached to your Pokémon?
- No, you always have the choice whether to attack on your turn or not.
Source:
WotC Chat (2000-01-27)
- Can I attack with a Pokémon if I just played it?
- Yes, as long as it's your Active Pokémon (only your Active Pokémon can attack) and as long as it has the required amount of Energy for the attack.
Source:
WotC Chat (1999-09-30)
- When I attack, do I discard the Energy card(s) I used to power the attack?
- Energy is not used up by an attack. Unless that attack specifically says to discard an Energy, it stays attached to the Pokémon.
Source:
WotC Chat (1999-09-30)