U.S. Transmission Line Market Size & Share Analysis - Emerging Trends, Growth Opportunities, Competitive Landscape, and Forecasts (2025 - 2032)

U.S. Transmission Line Market Trends & Drivers

Technological Advancements for T&D Efficiency and Reliability Are Trending in U.S.

• There is an urgent requirement for refurbishing and replacing outdated transmission lines for better grid reliability and meet the rising electricity demand in the commercial, industrial, and utility sectors.
• There is a requirement for the construction of new transmission lines to connect renewable energy sources, which are located in remote areas, to the main grid.
• According to the EIA, the country will raise its solar energy capacity by 45% between 2024 and 2026.
• The use of high-temperature low-sag (HTLS) conductors, aluminum composite conductors, and digital monitoring systems provides transmission efficiency, lower maintenance costs, and easier grid management.
• There is a rapid shift toward underground transmission lines in urban and environmentally sensitive areas to minimize visual impact, improve their reliability, and enhance safety.
• The integration of digital technologies, sensors, and bi-directional communication systems allows for real-time monitoring, control, and optimization of power flow, making the overall grid smarter.
• In October 2023, the Biden–Harris Administration allocated USD 3.46 billion for grid modernization across 58 projects in 44 states.

Rising Electricity Demand Is Biggest Driver for Market

• The country’s population reaching 340.1 million in 2024, witnessing the highest YoY increase ever, as per the U.S. Census Bureau.
• The rising demand for electricity in the residential, commercial, and industrial sectors necessitates the expansion and upgradation of transmission lines to ensure reliable electricity delivery.
• As per the U.S. Energy Information Administration (EIA), from 2022 to 2050, the demand for electricity in the country will increase by 15%.
• As per estimates, the country’s electricity demand could rise by up to 185 TWh to by 2030 every year due to EVs alone.
• From 2020 to 2023, electricity consumption by the industrial sector grew by 2.3%, reaching around 1,025 Terawatt-hours.
• The interregional electricity trade enables the transfer of electricity between different regions, which helps in balancing the supply and demand.
• Currently, the U.S. has an interregional transmission transfer capacity is 84.4 GW and the BIG WIRES Act aims to double this to 191 GW by the end of this decade.

U.S. Transmission Line Market Segmentation Analysis

Type Insights

The overhead category dominates the market, with a revenue share of 60% in 2024, due to their cost-effectiveness, ease of installation, and well-established infrastructure. These factors make them the primary choice for long-distance power transmission across the country. Furthermore, the ongoing rural electrification projects and renewable energy capacity expansion create the requirement for an extensive overground transmission line network.

Here are the types studied in the report:

• Overhead (Largest Category)
• Underground (Fastest-Growing Category)
• Submarine

Voltage Insights

The 221–660 kV category accounted for the largest revenue share, of around 50%, in 2024, and this category is further expected to grow the fastest during the forecast period. This is due to its suitability for medium-to-long-distance power transmission as it witnesses minimal energy losses. These high-voltage lines are crucial for connecting power plants to the grid, to facilitate high-capacity electricity transmission across vast distances.

The voltages covered in the report are:

• 130–220 kV
• 221–660 kV (Largest and Fastest-Growing Category)
• Above 660 kV

Conductor Insights

The conventional category dominates the market with a revenue share of 55% in 2024, due to their existing infrastructure and cost-efficiency in transmission. Aluminum and copper conductors are used due to their durability, longevity, appreciable conductivity, and cost-effectiveness.

The following are the conductors studied in the report:

• Conventional (Largest Category)
• High-Temperature (Fastest-Growing Category)
• Others

Product Insights

The AC category dominates the market with a revenue share of 85% in 2024. This is due to its affordability, established infrastructure, and ability to transmit high volumes of electricity across long distances as well as locally. AC transmission lines are preferred for new electrical grid and expansion projects because they are convenient to maintain and compatible with existing systems.

The following are the products studied in the report:

• AC Transmission Lines (Largest Category)
• DC Transmission Lines (Fastest-Growing Category)

End User Insights

The utility category dominates the market with a revenue share of 80% in 2024. This is due to the large amount of electricity delivered from power stations to the residential, commercial, and industrial sectors. This is due to the rising demand for electricity, need to expand and upgrade transmission networks for renewable energy sources, and government funding for grid modernization. Electric utilities in the country are investing in advanced technologies for grid resilience and to meet the rising demand for electricity reliably. The EIA says that utility-scale power plants in the country produced 4.18 trillion kWh of electricity in 2023.

The following are the end users studied in the report:

• Utility (Largest and Fastest-Growing Category)
• Telecommunication
• Others

U.S. Transmission Line Market Geographical Analysis

The Southern region is the market leader with a revenue share of 40% in 2024, because of its significant investments in grid expansion and modernization. Moreover, Texas is the leader in wind energy generation. Texas, Florida, and Georgia are currently experiencing major infrastructure developments, including expansive renewable energy initiatives. As per the EIA, retail electricity sales in the Southern region of the country in 2023 stood at 492,820,385 MWh in Texas, 250,940,214 MWh in Florida, 142,028,831 MWh in Georgia, 133,091,108 MWh in North Carolina, and 132,318,505 MWh in Virginia.

Here are the regions covered in the report:

• South (Largest and Fastest-Growing Region)
• West
• Midwest
• Northeast

U.S. Transmission Line Market Share

• The market is consolidated, due to the presence of major players, such as American Electric Power (AEP), Quanta Services Inc., Duke Energy, NextEra Energy Transmission, and ABB Ltd.
• They hold major market shares due to their extensive infrastructure projects and investments.
• Despite the consolidation, numerous regional firms and contractors offer overhead, underground, and submarine transmission lines and engage in related projects.
• The government support and increasing investment in grid modernization and renewable energy attracts established firms and smaller companies.
• Moreover, wires and conductors are relatively simpler and cheaper to manufacture than transformers, switchgear, and other bulky equipment.

U.S. Transmission Line Market News

• In April 2025, ABB Ltd. operationalized a 90,000-square-foot factory in New Albuquerque, New Mexico, which will enhance the output of the company’s Fisher Pierce circuit solutions and Elastimold cable accessories. This USD 40-million factory will allow ABB to better cater to the electric utility sector of the U.S.
• In February 2025, AEP announced that it and its affiliate Transource will invest USD 1.7 billion in power grid upgrades across Indiana, Ohio, Virginia, Maryland, and West Virginia.