Almost reminiscent of Base Electrode or perhaps Electrode EX. Anyways, Electrode SW has some good potential I think. 80 HP is good for a Stage 1, +20 Weakness to Fighting hurts as usual, and -20 Resistence to Steel is somewhat lame since there are no real major Steel-type decks out there. Free Retreat is good though. Its Poke-Power, Energy Shift (which is now good due to errata) lets you attach him as a Special Energy of any type to one of your Pokemon when he would be KOed by an attack instead of discarding him. Ion Blast is ok, dealing 40 damage for 2 Energy, but you can add 60 damage to that in exchange for Electrode doing 100 to himself; this is situationally good, in the event you'd otherwise be KOed next turn and you want to get off that final bang.
Modified - 7/10 (Not for all decks, but I see potential here)
Limited - 8/10 (Solid stats and attack and serves as Energy when it would be KOed)
Unlimited - 1/10 (No use here, especially with better alternatives)