Market Overview and Growth Outlook
Earthing and screening components play a critical role in maintaining the safety, reliability, and operational efficiency of electrical transmission networks. These components provide grounding paths, protect transmission infrastructure against lightning strikes, and support electrical shielding across overhead and underground power systems. Increasing investments in electricity grid expansion, digital infrastructure, renewable energy connections, and high-voltage transmission networks are creating opportunities for manufacturers of advanced earthing and screening products.
Stratview Research’s Earthing/Screening Components for Transmission Lines Market Growth analysis indicates that the global market will increase from USD 5.2 billion in 2026 to USD 8.5 billion by 2035, registering a CAGR of 5.7% during 2026–2035. The market was valued at USD 5.0 billion in 2025, reflecting year-over-year growth of 4.0% in 2026. The cumulative sales opportunity is estimated at USD 66.4 billion throughout the forecast period.
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Major Factors Driving Market Growth
Increasing Transmission and Distribution Investments: The expansion of electricity transmission infrastructure is a major factor supporting market growth. Utilities are investing in new transmission corridors, upgrading existing networks, and replacing aging assets. These projects require overhead earth wires, tower grounding systems, and specialized screening components to ensure safe and reliable power delivery.
Rapid Adoption of OPGW for Grid Communications: Optical ground wire is becoming increasingly important because it combines conventional lightning shielding with fiber-optic communication capabilities. The growing deployment of smart grids, digital substations, and automated grid protection systems is encouraging utilities to adopt OPGW for improved communication and real-time monitoring.
Growing Demand for High-Voltage and UHV Transmission Networks: Increasing electricity demand and the need to transmit power over long distances are encouraging investments in high-voltage and ultra-high-voltage infrastructure. These developments create additional requirements for high-performance earthing and screening products.
Expansion of Renewable Energy Transmission Infrastructure: The integration of wind and solar power into national electricity networks requires additional substations, transmission corridors, and grid connections. Renewable energy developers are therefore creating new demand for grounding, shielding, and cable protection components.
Emerging Growth Opportunities
OPGW-Based Digital Grid Infrastructure: OPGW is expected to remain the largest and fastest-growing component category. Manufacturers can benefit from opportunities in high-fiber-count cables, hybrid OPGW, and temperature-sensing technologies that support grid automation, communication, and predictive maintenance.
UHV Transmission Projects: UHV voltage systems are expected to register the fastest growth among voltage categories. Investments in long-distance and interregional transmission networks create opportunities for specialized grounding and shielding technologies.
Underground and Submarine Installations: Underground installation is projected to be the fastest-growing installation category. Increasing urbanization, grid reliability initiatives, and underground transmission projects are supporting demand for cable screening and earth-continuity solutions. Submarine applications also offer opportunities through offshore renewable energy connections.
Renewable Energy Developer Segment: Renewable energy developers are expected to represent the fastest-growing end-user category. New onshore and offshore wind farms and solar installations require reliable grid connections and electrical protection systems, creating opportunities for suppliers.
Regional Growth Outlook
Asia-Pacific is expected to remain the leading regional market throughout the forecast period. The region accounted for approximately 40% of global market demand in 2024, supported by large-scale transmission infrastructure development and strong OPGW deployment across China and India.
North America is benefiting from investments in grid modernization, aging infrastructure replacement, and digital communication systems. Europe offers opportunities through renewable energy integration, offshore wind development, and the expansion of high-voltage and underground transmission networks.
The Rest of the World, including the Middle East and Latin America, also presents opportunities through electricity network expansion and increasing investment in transmission infrastructure.
Competitive Landscape and Key Companies
The global market includes international cable manufacturers, grounding equipment suppliers, and specialized transmission-line component producers. Major companies include:
- ZTT Group (Jiangsu Zhongtian Technology)
- Prysmian Group
- Nexans S.A.
- Jiangsu Hengtong Group
- AFL (Fujikura Ltd.)
- Sterlite Power (Sterlite Technologies Ltd.)
- nVent Electric plc (ERICO)
- Hubbell Power Systems
- Sumitomo Electric Industries, Ltd.
- Furukawa Electric Co., Ltd.
- LS Cable & System Ltd.
Market participants are focusing on expanding OPGW production capabilities, developing advanced fiber-optic integration technologies, improving grounding performance, and strengthening relationships with utilities and EPC contractors.
Recent developments highlight the industry’s technological direction. In 2025, ZTT International introduced an OPGW cable with integrated temperature-sensing technology for real-time monitoring and predictive maintenance. In 2024, Fujikura developed hybrid OPGW cables integrating transmission-line shielding and communication capabilities.
Market Challenges and Considerations
The industry faces challenges associated with raw material price volatility, product commoditization, and installation requirements. Competition in standardized overhead earth wires can place pressure on pricing and profit margins. Fluctuations in steel, aluminum, and optical fiber prices can also affect manufacturing economics and long-term project contracts.
Additionally, OPGW products require specialized technical validation, mechanical testing, and utility approvals. Proper grounding design and installation are essential for ensuring electrical safety. Delays in transmission infrastructure investments, permitting processes, and grid modernization projects can also influence market demand.
Conclusion and Strategic Outlook
The earthing/screening components for transmission lines market is expected to experience steady expansion through 2035, driven by transmission infrastructure investments, smart grid deployment, and renewable energy integration. With a projected CAGR of 5.7%, OPGW, UHV transmission, underground installation, and renewable energy applications represent attractive growth opportunities. Companies investing in communication-enabled shielding products, advanced grounding technologies, and high-performance transmission components are positioned to benefit from the evolving electricity infrastructure landscape.
