The initial cost of copper busbars is approximately 3 to 4 times that of aluminum busbars (calculated based on the average annual price in 2023), but in scenarios that require high conductivity, small size or long service life, their full life cycle cost may be lower. For instance, in the busbar system of a data center, the low resistance of copper bars reduces power loss, and the electricity bill saved over long-term operation can offset the initial price difference.
The cost advantage of cables is reflected in the installation process. Their flexible characteristics can reduce the use of connectors and fixed brackets. However, the skin effect of multi-core cables (in high-frequency scenarios) will lead to a decrease in the effective current-carrying capacity. Composite materials (such as copper-clad aluminum) enhance electrical conductivity through a surface copper layer and reduce weight and cost with an internal aluminum core. However, special processes are required during welding or terminal connection. The overall cost advantage depends on the specific application scenario.