It converts electrical energy (EU) to mechanical energy (MJ). The mechanical energy produced can then be used by machines that require MJ energy (e.g. a Quarry), or the Energy Link can be placed directly beside a Wooden Transport Pipe or Wooden Waterproof Pipe to power it without an Engine.Note that this may cause massive pipe overflow as the energy link will draw all available power (far beyond the per-face limit listed below) to move single items at a high rate or liquids. (The wooden pipes have a rate limit of their own however, and it is untested how much EU/t is needed to reach this limit.) For fast wooden transport pipes you can stick it directly beside them, but this does not have any of the advantages of normal machines right by it. The pipe may also bug and sometimes will not accept power. You can also stick the Energy Link directly beside the machine you are powering, and it will only take the amount needed if set up properly. (Shown to the right)
Passing energy from a filled EU Storage Device directly to an Energy Link, directly to an Engine Generator and back to secondary storage returns around 99.6% of the initial energy, meaning that the efficiency of the Energy Link is close to 100%.
A power source must be connected to one side of the Energy Link - the source can either be placed next to the Energy Link, or it can be connected using cables. The Energy Link must then be connected to the block which requires the mechanical energy - again, it can be placed next to the block or connected using conductive pipes.
This is useful, as it means that Powered Teleport Pipes can be used to transmit mechanical energy across large distances, allowing an Energy Link to be placed next to a power source and the mechanical energy to be used at much higher efficiency than if the electricity were to go through many blocks of cabling. In order for the Energy Link to output power into Conductive Pipes, a Wooden Conductive Pipe must be connected to the Energy Link before the Conductive Pipes. This method, unlike traditional cabling, has a fixed loss rate that does not depend on how far away the Energy Link is from the Engine Generator, meaning it will be much more efficient when transferring EU through very long distances, thus being a cheaper alternative for Glass Fibre Cables.
An Energy Link will drain up to 72 EU/t from a power source, per face used as an output. Each additional face used as an output can drain another 72 EU/t of power, but take care not to direct energy out via one Wooden Conductive Pipe and through another connected to an Energy Link, as this will reduce the overall output and make an EU-Reader give false readings.
The Energy Link can also be toggled on/off via redstone signal to any free side, which with the addition of Wireless Redstone's Wireless Transmitter and Wireless Receiver can allow for remote operation so long as both chunks are loaded.
Energy Links will continue to draw power as long as its on, regardless of if it is actually connected to something, or if that something is "off" (i.e. not working).