USA, New York: Grid-enhancing technologies could increase the capacity of existing US transmission infrastructure as electricity demand rises faster than new lines are being built, according to a white paper from Columbia University’s Center on Global Energy Policy.
The report examines dynamic line ratings (DLR), advanced power flow control, phase-shifting transformers, advanced conductors and topology optimisation. DLR uses real-time weather and sensor data to determine how much power a line can safely carry, while FACTS devices and phase-shifting transformers can control power flows and relieve network bottlenecks.
A national DLR assessment covering 51,957 transmission lines rated at 115 kV and above found that DLR could, on average, increase line ratings by 50–100% during 20–80% of annual operating hours. The study did not account for equipment limitations including transformers and breakers, and the report stresses that modelled ratings require verification through direct measurements.
The paper notes that US high-voltage transmission construction fell from around 2,700 km (1,700 mi) annually in 2010–2014 to about 560 km (350 mi) in 2020–2023, while utility forecasts indicate peak demand could rise by around 166 GW by 2030.
The authors identify utility incentives, restricted transmission data, conservative operating practices and limited engineering resources as barriers to wider deployment.
Source: Columbia University Center on Global Energy Policy
