While AC won the historical war, modern technical literature increasingly focuses on HVDC. As transmission distances exceed the "break-even distance" (usually around 500-800 km), AC lines become inefficient due to capacitive charging losses
Modern Electric Power Transmission: Principles, Infrastructure, and Emerging Technologies electric power transmission pdf
| Level | Voltage Range (kV) | Typical use | | :--- | :--- | :--- | | High voltage (HV) | 110 – 230 | Sub-transmission, large industrial | | Extra-high voltage (EHV) | 345 – 765 | Long-distance bulk transmission | | Ultra-high voltage (UHV) | 800 – 1,200 | Very long (>1000 km) or very high power (>5 GW) | While AC won the historical war, modern technical