How about an electrical field based on an alternate variant of the Tesla Coil?
You'd have to wear Nano or Quantum armor to receive certain effects from it, or have a tool that would benefit from the effects. Notably, long range charging station with possibility for over-charge, resulting in higher efficiency. The EU requirements would be massive, though. Every EU sent to the player would require an extra EU per, say, every block away from the coil to maintain a full transfer.
An advanced variant or addon device would allow you to determine which direction the power is sent in. Up, down, left, right, backwards, forwards, and spherical.