High-Voltage Direct Current (HVDC) and High-Voltage Alternating Current (HVAC) are the two primary methods for transmitting electricity. The key difference in terms of efficiency and loss is that HVDC transmission is significantly more efficient for long-distance power transfer.

HVAC systems experience three types of losses:

1. Joule losses (heat from resistance).

2. Corona losses (dissipation of energy into the air).

3. Reactive power losses (energy that oscillates back and forth, not performing useful work).

HVDC transmission, by contrast, eliminates corona and reactive power losses, and its Joule losses are much lower due to the absence of the "skin effect," which forces AC current to flow near the conductor's surface. While HVDC requires expensive conversion stations at both ends, the savings from reduced energy loss on long-distance projects often make it the more cost-effective and efficient solution. Our company provides both overhead and underground equipment to support the installation of long-distance HVDC and HVAC projects.