I have a complete (8 cards) HGSS RH Promo Energy (the one with the Play logo on the bottom right corner):
x1 Grass, x1 Fire, x1 water, x1 lightning, x1 psychic, x1 fighting, x1 darkness, x1 metal
The reverse foil energy only came out as promo play, if Im not mistaken. The packs came with 1 foil energy of every type except fairy energy of course. I have about 15 of these 8 card packs. How much are you looking to spend on them. It seems as though everybody is putting them at $20-$25 a pack.