A reliable power sources preferable powered from the same source as the Bridge equipment should be installed.
After the vessel arrives for the first transit, the Panama Canal Official

shall inform the Master of the designated position for the RTK (real time kinematic) antennas. The power supply should be installed as close as possible to this location. The RTK PPU (pilot portable unit) is provided with a suitable extension cable.

For New Buildings the power supply on both sides of the Bridge wings or/and on the top deck for enclosed bridge vessels should be clearly identified in the drawings.
For new buildings the installation of the USA standard (NEMA5-5-15R) 120V, 15A, AC, 3-pong power receptacle, on both bridge wings and on vessels with an enclosed bridge on the flying bridge (top deck) is required to comply with Panama Canal regulations.