Most power grids use high-voltage alternating current (AC) because it is easy to step up or step down the voltage using transformers, which are relatively simple and inexpensive. This flexibility makes AC ideal for a widespread, interconnected grid.

However, high-voltage direct current (HVDC) transmission is increasingly used for very long distances (hundreds of kilometers) or for undersea cables. HVDC lines have lower transmission losses over extreme lengths and avoid certain complex electrical phenomena inherent to AC systems, such as inductive and capacitive losses. While voltage conversion for HVDC is more complex and expensive, its superior efficiency for specific applications makes it a key technology for the future of power transmission. Our company provides a wide array of equipment for both AC and HVDC projects, including specialized tools for cable stringing and laying.