Reconductoring: The Path of Least Resistance to Fixing the U.S. Energy Grid

This report by the Environmental and Energy Study Institute examines reconductoring—the process of replacing existing electrical transmission cables with advanced conductors—as a rapid and cost-effective method to increase the capacity of the U.S. energy grid. The author argues that reconductoring can bypass lengthy permitting processes, reduce energy costs, and support the transition to clean energy by enabling the connection of stalled renewable projects and meeting rising electricity demands from electric vehicles and data centers.

• Reconductoring can significantly increase grid capacity at a lower cost and faster pace than building new transmission lines. Advanced conductors can double the electrical transfer capacity of a line for less than half the price of new structures because they do not require new rights of way. While new lines can take 10-15 years to complete, advanced conductors can be installed in 18-36 months.
• The U.S. faces a critical grid connectivity gap, with approximately 2,500 GW of clean energy projects stalled. To achieve net-zero emissions by 2035, the U.S. may require up to 47,300 GW-miles of additional transmission capacity. Current national capacity is growing at only 1% annually, which would only add 16,000 GW-miles by 2035; however, reconductoring could increase that capacity by more than 60,000 GW-miles at a 20% higher cost.
• Reconductoring provides economic and environmental benefits, including the potential to save the system $85 billion by 2035 and $180 billion by 2050. It can lead to a 3-4% reduction in wholesale electricity costs by enabling access to cheaper renewable energy, such as solar (forecasted at $24/MWh by 2035) and wind ($22/MWh by 2035). Environmentally, the ACCC® conductor has reduced power line losses by up to 40%, preventing 23 million metric tons of carbon dioxide emissions and reducing thermal power plant water consumption by approximately 124 billion gallons.
• Advanced conductors are technically superior to traditional aluminum-steel cables because they use composite cores (carbon, ceramic, or high-grade steel) that are more resistant to thermal expansion and cyclic load fatigue. This reduces cable sag, which lowers the risk of power outages and wildfires. Additionally, the use of trapezoidal wires instead of circular wires eliminates gaps, increasing the amount of conductive material and the line's allowable wattage.
• Several U.S. states and international regions have successfully implemented reconductoring. In Texas, the Electric Reliability Council of Texas doubled the capacity of 240-mile lines along the Gulf Coast between 2012 and 2015. Nevada has upgraded 125 miles of lines, and Southern California Edison has installed 385 miles. Internationally, Belgium is upgrading its transmission backbone, while Italy, the Netherlands, China, and India are also utilizing the technology.

APA

Singh, A. (2026). Reconductoring: The Path of Least Resistance to Fixing the U.S. Energy Grid. Environmental and Energy Study Institute. https://www.eesi.org/articles/view/reconductoring-the-path-of-least-resistance-to-fixing-the-u.s-energy-grid

Chicago

Singh, Aastha. Reconductoring: The Path of Least Resistance to Fixing the U.S. Energy Grid. Environmental and Energy Study Institute, 2026. https://www.eesi.org/articles/view/reconductoring-the-path-of-least-resistance-to-fixing-the-u.s-energy-grid.

Wikipedia

{{cite report |last1=Singh |first1=Aastha |title=Reconductoring: The Path of Least Resistance to Fixing the U.S. Energy Grid |publisher=Environmental and Energy Study Institute |date=24 March 2026 |url=https://www.eesi.org/articles/view/reconductoring-the-path-of-least-resistance-to-fixing-the-u.s-energy-grid |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{singh2026reconductoring, author = {Singh, Aastha}, title = {{Reconductoring: The Path of Least Resistance to Fixing the U.S. Energy Grid}}, institution = {Environmental and Energy Study Institute}, year = {2026}, month = mar, url = {https://www.eesi.org/articles/view/reconductoring-the-path-of-least-resistance-to-fixing-the-u.s-energy-grid}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }