Market overview
The global power transmission line market is worth USD 140 bn in 2026 and is forecast to reach USD 275 bn by 2036, growing at a 7.0% CAGR. China is the largest country market and Overhead AC is the largest by line type segment.
| Scope | Construction and supply of high-voltage overhead and underground transmission lines: towers, conductors, cables, insulators and installation, measured as installed project value. |
|---|---|
| Industry | Services and Utilities |
| Value 2025 | USD 130 bn |
| Value 2026 | USD 140 bn |
| Value 2036 | USD 275 bn |
| CAGR 2026-2036 | 7.0% |
| Volume 2026 | 263 thousand circuit kilometres |
| Volume 2036 | 425 thousand circuit kilometres |
| Average price 2026 | USD 530,400 per circuit kilometre |
| Report price | Starts from USD 1,999 |
| Published | November 2026 |
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Power Transmission Line market size and forecast, 2026-2036
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Year | Market value |
|---|---|
| 2026 | USD 140 bn |
| 2027 | USD 150 bn |
| 2028 | USD 160 bn |
| 2029 | USD 171 bn |
| 2030 | USD 183 bn |
| 2031 | USD 196 bn |
| 2032 | USD 210 bn |
| 2033 | USD 224 bn |
| 2034 | USD 240 bn |
| 2035 | USD 257 bn |
| 2036 | USD 275 bn |
Power Transmission Line market segmentation
By line type
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Overhead AC | 52.0% | 44.1% | USD 72.7 bn | 5.3% |
| Underground and subsea AC | 20.0% | 21.4% | USD 27.9 bn | 7.7% |
| HVDC | 28.0% | 34.4% | USD 39.1 bn | 9.2% |
By voltage
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Up to 220 kV | 34.0% | 29.0% | USD 47.5 bn | 5.3% |
| 221 to 400 kV | 36.0% | 33.8% | USD 50.3 bn | 6.3% |
| Above 400 kV | 30.0% | 37.2% | USD 41.9 bn | 9.3% |
By project type
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| New corridors | 48.0% | 46.0% | USD 67.1 bn | 6.5% |
| Upgrades and reconductoring | 32.0% | 34.0% | USD 44.7 bn | 7.7% |
| Interconnectors | 20.0% | 20.0% | USD 27.9 bn | 7.0% |
By conductor type
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| ACSR | 48.0% | 40.0% | USD 67.1 bn | 5.1% |
| High-temperature low-sag | 26.0% | 33.0% | USD 36.3 bn | 9.6% |
| Aluminium alloy and other | 26.0% | 27.0% | USD 36.3 bn | 7.4% |
By owner
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| State transmission operators | 64.0% | 58.0% | USD 89.4 bn | 6.0% |
| Private transmission companies | 22.0% | 26.0% | USD 30.7 bn | 8.8% |
| Merchant interconnectors | 14.0% | 16.0% | USD 19.6 bn | 8.4% |
Top 25 countries for power transmission line by revenue
Countries are ranked by revenue earned from sales in the country, not by where the product is made. The ten largest hold 83.5% of 2026 revenue and the 25 countries below together hold 95.7%.
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| # | Country | Value 2026 | Share 2026 | Value 2036 | CAGR 2026-36 |
|---|---|---|---|---|---|
| 1 | China | USD 47.5 bn | 34.0% | USD 86.3 bn | 6.2% |
| 2 | United States | USD 19.6 bn | 14.0% | USD 41.0 bn | 7.7% |
| 3 | India | USD 15.4 bn | 11.0% | USD 36.8 bn | 9.1% |
| 4 | Germany | USD 7.0 bn | 5.0% | USD 14.6 bn | 7.6% |
| 5 | United Kingdom | USD 5.6 bn | 4.0% | USD 12.1 bn | 8.0% |
| 6 | Brazil | USD 5.6 bn | 4.0% | USD 10.7 bn | 6.7% |
| 7 | Saudi Arabia | USD 4.2 bn | 3.0% | USD 8.8 bn | 7.7% |
| 8 | Australia | USD 4.2 bn | 3.0% | USD 8.8 bn | 7.7% |
| 9 | France | USD 4.2 bn | 3.0% | USD 7.1 bn | 5.5% |
| 10 | Japan | USD 3.5 bn | 2.5% | USD 4.9 bn | 3.5% |
| 11 | Canada | USD 2.9 bn | 2.0% | USD 5.3 bn | 6.3% |
| 12 | South Korea | USD 2.0 bn | 1.4% | USD 3.6 bn | 6.3% |
| 13 | Italy | USD 1.6 bn | 1.1% | USD 2.9 bn | 6.3% |
| 14 | Spain | USD 1.3 bn | 1.0% | USD 2.5 bn | 6.3% |
| 15 | South Africa | USD 1.2 bn | 0.8% | USD 2.2 bn | 6.3% |
| 16 | Egypt | USD 1.1 bn | 0.8% | USD 2.2 bn | 7.3% |
| 17 | Turkey | USD 978 mn | 0.7% | USD 2.0 bn | 7.3% |
| 18 | Mexico | USD 908 mn | 0.7% | USD 1.7 bn | 6.3% |
| 19 | Indonesia | USD 852 mn | 0.6% | USD 1.7 bn | 7.3% |
| 20 | Russia | USD 811 mn | 0.6% | USD 1.5 bn | 6.2% |
| 21 | United Arab Emirates | USD 769 mn | 0.6% | USD 1.6 bn | 7.4% |
| 22 | Poland | USD 727 mn | 0.5% | USD 1.3 bn | 6.4% |
| 23 | Sweden | USD 699 mn | 0.5% | USD 1.3 bn | 6.3% |
| 24 | Vietnam | USD 671 mn | 0.5% | USD 1.5 bn | 8.3% |
| 25 | Argentina | USD 643 mn | 0.5% | USD 1.2 bn | 6.3% |
| Rest of world | USD 6.0 bn | 4.3% | USD 11.4 bn | 6.6% |
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
Competitive landscape
Group 1: Global leaders
- Prysmian
- Nexans
- Quanta Services
- Sumitomo Electric
- NKT
- Southwire
- Hitachi Energy
- Zhongtian Technology
Group 2: Regional and specialist players
- KEC International
- Kalpataru Projects
- LS Cable and System
- Larsen and Toubro
- Transrail Lighting
- Skipper Limited
- Apar Industries
- Elsewedy Electric
- Valmont Industries
- CTC Global
Group 3: Emerging and niche players
- MasTec
- Sterlite Power
- MYR Group
- Pike Corporation
- Henkels & McCoy
- Primoris Services
Research methodology
Every figure on this page comes from the research framework that we apply to all of the markets we cover. The 2025 base for the power transmission line market is built from the volume sold and the price that buyers pay, and is cross-checked against the size of the wider industry the market belongs to. Where a market can be sized in more than one way, the routes are compared before a figure is set.
The forecast runs year by year from the 2025 base to 2036. Growth in each year reflects demand from the industries that buy the product, adoption of new technology, pricing, regulation and replacement cycles. Volume and price are modelled together, so revenue in each year equals volume multiplied by average price. The 2026 to 2036 compound annual growth rate of 7.0% is calculated from the resulting values.
The market is divided by line type, by voltage, by project type, by conductor type, by owner. The 25 largest countries are ranked by revenue earned from sales to buyers in each country, not by where the product is made. Segment values and country values add up to the market total in every year, and every report is checked for consistency before it is published.
Companies are placed in three groups: global leaders, regional and specialist players, and emerging and niche players. The groups describe how companies compete in the market. They are not a ranking and they are not market shares.
Our analysts also carry out primary research. Customized reports add interviews with key opinion leaders, such as senior executives, technical specialists and buyers, to test the assumptions behind the numbers for the question being asked.
Frequently asked questions
How big is the power transmission line market?
The global power transmission line market is estimated at USD 130 bn in 2025 and USD 140 bn in 2026.
How fast will the power transmission line market grow?
It is forecast to reach USD 275 bn by 2036, a compound annual growth rate of 7.0% from 2026, an increase of USD 135 bn.
Which country is the largest market for power transmission line?
China is the largest market by revenue at USD 47.5 bn in 2026, 34.0% of the global total. The three largest countries together hold 59.0%.
Which country is growing fastest?
Among the ten largest markets, India is growing fastest at 9.1% a year from 2026 to 2036.
Which power transmission line segment is largest?
In the by line type split, Overhead AC is the largest segment with 52.0% of 2026 revenue.
Who are the leading power transmission line companies?
Global leaders include Prysmian, Nexans, Quanta Services, Sumitomo Electric.
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