The Power Transmitter is a Power module that extends the range of a power source. It is constructed with the Habitat Builder and can be placed on the seabed. It can also be damaged and destroyed by striking it 3 times with the Survival Knife.
The Power Transmitter connects to nearby power sources (Solar Panels and Thermal Plants) and transmits their power to a Seabase or another Power Transmitter. Power can be transferred up to about 100 meters between two transmitters; a "power line" of transmitters can be built to transfer power over a long distance.