Holon Energy GL provides Colorless Energy.

If the Pokémon that Holon Energy GL is attached to also has a basic Grass Energy card attached to it, that Pokémon can't be affected by any Special Conditions. If the Pokémon that Holon Energy GL is attached to also has a basic Lightning Energy card attached to it, damage done to that Pokémon by attacks from your opponent's Pokémon-ex is reduced by 10. Ignore these effects if Holon Energy GL is attached to Pokémon-ex.