Its a fun tech with Raichu DP2, thats for sure.
But broken? Definitely not. Its great when you can get energy fed to him from a source. but his HP's are a problem. He's OHKO'd by Infernape, which is a staple deck, even with Emp still floating around.
I think its potential is still strong though. EVEN if it is flippy, the die rolls will add up, and its 30 damage for each head, thats a potential of 30 damage per one colorless. You can't say its bad, because Venusaur/Eggs Jungle decks were still seen as a staple in the original meta way back when Base Set and Jungle were the two big decks, and Big Eggsplosion was also flippy. This one is very similar to that one, and Energy Trans is still in Standard, unless I am mistaken, plus theres a lot of energy synergy in format right now.
Its still definitely not broken though. Its fragile, difficult to get out of combat without switch/WP and is weak to a commonly seen deck. It still has loads of potential, however.
And you never put more than 3-4 energies on it, even if you're trying to get the biggest most crazy energy possible. (It IS possible to get 4 quick energy on it too, Raichu does a good job of that.)