This report examines how grid-enhancing technologies (GETs) can help address growing pressures on the U.S. electric transmission system, including rising demand, congestion, and an aging grid. It explains how tools such as dynamic line rating, advanced conductors, advanced power flow control, and transmission topology optimization can unlock additional capacity, improve reliability, and increase the efficiency of existing infrastructure—often at lower cost and faster timelines than traditional transmission expansion. Drawing on real-world deployments and utility experience, the report highlights how GETs can complement long-term transmission investments by providing flexible, scalable solutions to improve grid performance in the near term.
File Library
- Whitepapers
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White Papers
Delaying transmission increases costs and reduces benefits for consumers
November 2025
This report examines the economic impact of delays in developing electric transmission infrastructure. By reviewing multiple transmission benefit studies across the United States, the analysis estimates that each $1 billion investment in well-planned transmission that is delayed costs consumers roughly $150 million to $370 million per year in lost net benefits, including higher electricity costs and reduced reliability. The report also finds that delays can defer 11,000 to 25,000 job-years per $1 billion of investment, highlighting how timely transmission development supports economic growth, job creation, and a more reliable power system.
Utility Perspectives on Making Grid-Enhancing Technologies Work: Use Cases, Barriers, and Recommendations for Scalable Deployment
July 2025
Accelerating Transmission Expansion by Using Advanced Conductors in Existing Right-of-Way
Revised February 2024
This white paper examines how expanding transmission capacity is critical to integrating renewable energy and achieving decarbonization goals, while highlighting the challenges of building new transmission lines. The analysis finds that reconductoring existing lines with advanced composite-core conductors can double transmission capacity within existing rights-of-way, avoiding many permitting barriers. Modeling of the U.S. power system shows this strategy could provide over 80% of the transmission needed to reach more than 90% clean electricity by 2035 and deliver about $180 billion in system cost savings by 2050, making reconductoring a fast and cost-effective option for grid expansion.
Industry Reports
Electricity 2026- Analysis and forecast to 2030
February 2026
Published by the International Energy Agency (IEA), this annual report provides an indepth analysis of global electricity systems and markets, with forecasts for electricity demand, supply, and CO₂ emissions through 2030. The report examines the rapid growth in electricity demand driven by electrification, data centres, and emerging technologies, and highlights the increasing need for grid expansion, system flexibility, and storage to securely and costeffectively integrate a more diverse generation mix.
2025 Transmission Planning and Development Report Card
February 2026
Published by Grid Strategies, this report card evaluates the state of U.S. transmission planning and development, assessing whether current processes and outcomes are sufficient to meet growing reliability, affordability, and clean energy needs. The report highlights persistent shortcomings in longterm planning, interregional coordination, and project development timelines, and underscores how delays and bottlenecks in transmission expansion contribute to higher costs and operational constraints across the power system.
Transmission Lowers U.S. Generation Costs, but Generator Incentives Are Not Aligned
February 2026
Published by PNAS (Proceedings of the National Academy of Sciences), this research finds that transmission and other spatial constraints prevent electricity markets from fully dispatching the lowest cost generators. The authors estimate that removing spatial constraints within U.S. interconnections would have reduced generation costs by billions of dollars in 2022 and 2023, while also creating winners and losers among generators, helping explain why some incumbent producers may resist transmission expansion.
Report- Key ACCC® Conductor Use Cases for New and Rebuilt Transmission Line Projects
July 2025
POWER Engineers, Inc., member of WSP (POWER), performed a high-level conceptual conductor selection analysis comparing the
costs and performance of ACCC® Conductor options to traditional counterparts with the goal of highlighting key ACCC® Conductor use cases for new or rebuilt lines. This report summarizes the methodology and results of this analysis and serves to highlight broader comparative trends using conceptual conductor comparisons.
These reports are publicly accessible and unless otherwise indicated were not authored by CTC Global. All the credit for the content, research, and findings in these reports goes to the original author. CTC Global is providing these reports for informational purposes only and do not claim ownership or authorship over them.
Manuals
ACCC® Maintenance and Repair Manual
The purpose of the ACCC® Conductor Maintenance and Repair Manual is to provide experienced personnel with guidelines, recommendations, and the requirements necessary to successfully Maintain and Repair ACCC® composite-core bare overhead line conductor and associated accessories.
ACCC® Conductor Installation Guidelines
The purpose of the ACCC® Conductor Installation Guidelines is to provide experienced personnel with guidelines, recommendations, and requirements necessary to successfully install the bare overhead composite-core ACCC® Conductor and Accessories.
Engineering Transmission Lines with High Capacity Low Sag ACCC® Conductors
The purpose of this document is to offer engineering and design guidelines specific to the use of ACCC® Conductors on electrical transmission lines so their electrical, mechanical, and cost attributes and benefits can be fully realized.
Engineering Transmission Lines with High Capacity Low Sag ACCC® Conductors (German)
The purpose of this document is to offer engineering and design guidelines specific to the use of ACCC® Conductors on electrical transmission lines so their electrical, mechanical, and cost attributes and benefits can be fully realized.