Composite Insulators Market Size - By Voltage, By Application, By Product, By End Use, By Rating, By Installation, Growth Forecast, 2025 - 2034

Composite Insulators Market Size

The global composite insulators market size was estimated at USD 2.6 billion in 2024. The market is expected to grow from USD 2.8 billion in 2025 to USD 5 billion in 2034, at a CAGR of 6.7%.
 

• The rising need for insulators for high-voltage applications, technological advancements in material science coupled with increasing emphasis on energy efficiency and system reliability. Manufacturers are investing aggressively in R&D to offer higher performance, thermal sustainability, and durability against environmental factors.
   
• For example, in September 2024 leading utility companies in the USA pledged more than USD 6 billion a year to support the global advancement of clean power grids and energy infrastructure. The Utilities for Net Zero Alliance (UNEZA), which started operating in COP28 with support from IRENA and the UN Climate Change High Level Champions, aims to decarbonize electricity systems.
   
• The rising use of smart grids and the addition of distributive energy sources including solar and wind energy systems are opening new avenues for using composite insulators. Furthermore, these insulators are preferred in highly contaminated areas and regions with high mechanical stress and severe weather because of their low maintenance requirements over extended periods of time.
   
• Continuous grid improvements and government initiatives aimed at addressing infrastructural gaps to minimize power outages will stimulate industry expansion. Beneficial policies for investments, funding for advanced technological innovation, and the expansion of the transmission lines power network will complement the composite insulators market landscape.
   
• For instance, the Advancing Grid-Enhancing Technologies (GETs) Act of 2024 along with the U.S. Department of Energy’s Grid Resilience and Innovation Partnerships (GRIP) program focuses on improving the nation’s energy power grid by investing in technologies that increase its resilience, reliability and flexibility. GRIP provides funding for both community-based projects and large-scale regional modernization efforts, innovative applicable solutions to strengthen and enhance the T&D grid.
   
• The Asia Pacific region dominated the market driven by accelerated investment by government authorities, private organizations, and utilities for the development and expansion of the electricity networks. Additionally, the region's focus on smart grid development and the need for lightweight, durable, and maintenance-efficient electric insulators further boost the composite insulators market growth.
• For instance, in July 2024, Japan planned to support ASEAN's power grid expansion to boost decarbonization and renewable energy, announced by the government officials at the Asia Business Summit, held in July 2024. The country will fund part of projects in Indonesia to develop inter-island transmission and renewable energy.
   
• The Middle East & Africa region is one of the fastest growing regions, driven by ongoing infrastructure development, including new power plants and grid expansions to support economic growth and urbanization. The increasing adoption of composite insulators, owing to their superior performance in harsh environments along with shifting focus on modernizing aging infrastructure and enhancing transmission efficiency contributes to composite insulators market growth.
   
• For instance, in June 2025, The Abu Dhabi Fund for Development signed USD 205 million financing deal with the Gulf Cooperation Council Interconnection Authority to expand the GCC power grid and enhance regional energy security. This project aims to facilitate power exchange among GCC countries, supporting energy resilience and economic integration in line with UAE Energy Strategy 2050.
   

Composite Insulators Market Trends

• The composite insulators industry is expected to experience significant growth driven by increasing electricity demand and the ongoing expansion of transmission and distribution (T&D) grid networks. Government initiatives aimed at upgrading electrical infrastructure, particularly in regions susceptible to extreme weather conditions where traditional insulators may prove unreliable, are set to further accelerate product adoption.
   
• For instance, in October 2024, the U.S. Department of Energy (DOE) has disclosed almost USD 2 billion spanning across 38 projects intended for enhancing the protection of the U.S. power grid against the dangers posed by extreme weather, economically unfriendly spending for communities, and enabling additional capacity of grid to serve the demand that is expected to rise due to growing industries including manufacturing, data centers, and electrification.
   
• Additionally, the growing use of smart grids along with the increased efforts to modernize and strengthen power grid systems will aid the growth of the industry. In April 2025, the U.S. government introduced a grant of USD 12 million to foster new technology research in New York which focuses on optimizing clean energy delivery systems to the state’s electric grid. The funding will spur the development of emerging and adaptive technologies for the enhancement of electric grid performance, reliability, and the integration of renewable energy resources.
   
• The focus on enhancing grid resilience in more critical conditions along with heavy spending on smart grid solutions and existing infrastructure will strengthen the composite insulators industry dynamics and establish an additional competitive edge for their manufacturers. Stringent regulations pertaining to the construction of transmission lines will improve the composite insulator market.
   
• Favorable regulations for the development of efficient electrical infrastructure and developing legislative support for expanding cross border transmission systems will foster the industry outlook.
   
• For instance, in July 2025, The EU Commission issued new guidance to help countries lower electricity costs and promote renewable energy. It aims to support grid expansion, storage deployment, and future-proof network charges, aligning with the revised Renewable Energy Directive and Action Plan for Affordable Energy. Countries are encouraged to designate areas for infrastructure development, which may be exempted from some environmental assessments, to accelerate the clean energy transition.
   
• The rising number of industrial establishments together with the integration of electrical components across utility infrastructure further accelerated the industry growth. Growing need for restoration of prevailing electrical systems and shifting focus toward enhancing power generation capacity have fueled the composite insulators market dynamics.
   
• For instance, according to the U.S. Energy Information Administration published in November 2024, Utilities' annual spending on electricity production and delivery rose 12% from USD 287 billion in 2003 to USD 320 billion in 2023, mainly due to increased capital investments. Upgrades included replacing aging infrastructure, adding natural gas, wind, solar, and battery storage, connecting renewable resources, and integrating advanced smart technology.
   

Composite Insulators Market Analysis

• Based on voltage, the industry is segmented into high, medium and low. The medium voltage segment dominated the 41.2% revenue share in 2024 and is expected to grow at a CAGR of over 6% through 2034.
   
• The medium voltage segment is anticipated to grow driven by the enhanced application of these insulators in grid systems and ongoing developments in intra-regional electric network interconnections. The increasing need for long-distance transmission capabilities is anticipated to drive further product adoption.
   
• Manufacturers are increasingly prioritizing the improvement of both the technical and physical attributes of medium voltage composite insulators to ensure reliable performance in challenging environments.
   
• The high voltage composite insulators market is set to register at a CAGR of over 6.5% through 2034, fueled by the advancing high voltage electric power network development and increasing efforts toward minimizing power supply interruptions.
   
• For instance, the Netherlands is developing new HVDC projects and advanced management methods to address grid congestion. TenneT, responsible for the high-voltage network (110-380 kV), cross-border interconnections, manages the national grid, aiming to enhance grid capacity and reliability.
   
• Growing use of renewable energy sources including solar and wind, increasing integration of advanced technological systems along with government policies aimed at improving grid stabilization is increasing the use of mechanically and electrically robust composite insulators.
   
• For instance, in March 2025, India planned to reach 500 GW of non-fossil fuel capacity by 2030, majorly through expanding solar and wind energy. To address challenges from their variability, the Central Electricity Authority (CEA) recommended co-locating energy storage systems with solar projects to boost grid stability, reduce costs, and ensure reliable power during low renewable output or peak demand.
   
• The low voltage of the composite insulator market will project at a CAGR of over 7% till 2034. Growing inclination over safety and reliability along with increasing expenditure toward electric infrastructure in power grid and residential applications will shape the industry dynamics. The ongoing replacement and refurbishment of existing and outdated networks, across developing countries, will further influence the low voltage composite insulators industry outlook.
   
• For instance, as per the IEA (International Energy Agency) study published in January 2024, insufficient grid capacity poses major challenges for achieving international climate and energy targets. Addressing this complex issue, estimates indicate that more than 80 million kilometers of grid infrastructure, either new or upgraded, must be developed globally by 2040. This amount is roughly double the current total length of existing power grids worldwide, highlighting the scale of the task ahead.
   

• Based on the application, the composite insulators market is segmented into cables and transmission lines, switchgears, transformers and bus bars. The cables and transmission lines lead with a major market share of 28% in 2024 and is expected to grow at a CAGR of over 5.5% from 2025 to 2034.
   
• Rising demand for a reliable transmission network to support increasing electricity needs, combined with the continuous expansion of grid infrastructure, will strengthen the market landscape. Moreover, these insulators provide several benefits over conventional units, such as greater insulation efficiency, lower leakage currents, and enhanced performance of transmission lines.
   
• Supportive government policies aimed at forwarding the electrification of remote areas, for reliable efficient power delivery, will also strengthen the industry growth. For instance, in June 2025, SEforALL, with support from the Rockefeller Foundation, announced initial private mini grid deals in Zambia’s ZEDSI program. Over USD 1.1 million was awarded to three companies to boost energy demand across 43 mini-grids, expanding access to reliable, affordable power for underserved communities. The goal is to reach over 7,000 people, electrify 1,000 communities, and achieve universal energy access by 2030.
   
• The switchgear application segment holds more than 22% market share in 2024 with a growth rate of over 6% CAGR till 2034. The switchgear industry is anticipated to grow owing to increased focus on grid reliability and safety. Greater investment is concentrated on improving the reliability and longevity of key apparatus such as switchgear. Besides, the development of smart grids is also stimulating the implementation of sophisticated switchgear systems.
   
• The transformer application segment for composite insulators will witness a growth rate of above 7% from 2025 to 2034. A significant increase in global demand for transformers in both industrial and utility sectors has accelerated product deployment. The rising need for electricity has led transformers to play a crucial role in efficiently transmitting and distributing power across vast electrical networks.
   
• For instance, in May 2025, Hitachi Energy successfully tested a groundbreaking 765 kV/400 kV, 250 MVA single-phase transformer filled with biodegradable ester oil. This is the first of its kind at this voltage and power level, offering a safer, environmentally friendly option for ultra-high-voltage grids. Such transformers are vital for expanding transmission capacity, supporting long-distance energy transfer, and enhancing grid stability.
   
• The busbar segment for composite insulators market is set to grow at a CAGR of 6.5% from 2025 to 2034. The increasing adoption of composite insulators in modern power systems has accelerated the product integration across busbars systems, further influencing the business landscape.
   
• The growing demand for reliable and efficient power distribution networks, the role of busbars, which are essential components in electrical grids for distributing electricity from transformers to other distribution circuits, becomes even more critical.
   
• For instance, in July 2025, GE Vernova has been awarded a contract by German transmission operator TransnetBW to modernize the Kühmoos substation. The company will deliver a new 380 kV gas-insulated substation, replacing old switchgear with advanced technology. The upgrade will double the capacity, reduce the footprint, and ensure continuous operation during construction, featuring 15 bays of advanced GIS technology and a 4 main busbar system for improved flexibility and security.
   

• The U.S. dominated the composite insulators market in North America with around 72% share in 2024 and generated USD 280.5 million in revenue. Increasing investments for the expansion of electrical networks and implementation of renewable-integrated grids are shaping the business dynamics. Both public authorities and private investors are modernizing the infrastructure to cater to increasing demand, enhance reliability, and facilitate clean energy integration.
   
• For instance, in April 2024, the U.S. government announced the new initiative of USD 331 million to increase grid capacity by more than 2,000 megawatts, implementing a final reform to transmission permitting which shall unlock unprecedented growth in the Western region of the grid powered infrastructure system capable of fueling 2.5 million households.
   
• The North America composite insulators market is projected to surpass USD 750 million by 2034. Favorable measures by the respective government authorities including investments toward strengthening the T&D infrastructure and improving the grid stability will complement the business dynamics. Moreover, ever-increasing expenditure for development of the production facilities coupled with refurbishing operations to upgrade or replace prevailing technologies will augment the industry landscape.
   
• The Europe composite insulator market was evaluated at about USD 400 million in 2024. Increasing need for smart grid systems, strict energy efficiency policies along with accelerated investments by authorities to enhance and integrate the electricity generation, distribution, and transmission systems to foster an eco-friendly power framework is shaping the business dynamics.
   
• Favorable regulatory frameworks to support the objectives of EU policies including directing investments towards flexible and robust grids, catering to the increasing energy consumption will augment composite insulators market landscape.
   
• For instance, in May 2025, the European Parliament adopted proposals frameworks covering a spectrum of issues responding to modern requirements. The frameworks included ways to transform Europe’s electricity grid infrastructure toward meeting the needs of increasing renewable energy supply, maintaining a resilient decarbonized power system, and aligning with the EU energy targets. It emphasizes major further investment and infrastructure development needed to enhance cross-border transmission capacity.
   
• The Asia Pacific composite insulators market holds a revenue share of over 49% in 2024. Shift in demographic patterns of economic growth, urbanization, and rising power consumption in industrial, residential, and commercial areas will complement the industry outlook. Furthermore, stringent regulatory environment concerning reduction of transmission as well as distribution losses, and supportive policies for the reduction of power generation augmentation will further augment the Asia Pacific composite insulators business landscape.
   
• Continued investments toward the development of transmission and distribution networks as well as into the deployment of renewable energy sources on the grid will shape the industry dynamics. For example, in March 2025, the Indian Ministry of Power announced a projection with an approximate 1.91 lakh ckm newly constructed transmission lines along with 1,274 GVA in transformation capacity gearing to be added by 2032. In the remark of the Ministry of Power stated that “Electricity is one of the most important elements for ‘developed India by 2047’ vision goals.
   
• The Middle East & Africa composite insulators market is expected to reach USD 800 million by 2034, attributed by the rapid growth in population, urbanization, and an increase in power demand in residential, commercial, and industrial sectors. The incorporation of renewable energy assists in significant expansion of electrical networks to the grid system further augmenting industry growth.
   
• For instance, in August 2024, South Africa formulated the Electricity Regulation Amendment to improve the power sector operations. From January 2025, it eases the licensing of small and medium scale energy facilities, enhancing investment and competition. Moreover, within five years, it planned to establish a transmission system operator to function independently, grid supervision support for independent power producers, renewables integration, and prioritize electricity reliability access.
   
• The Latin America composite insulators market is predicted to expand due to advancements in creating a sustainable electrical supply system in the region. Investment by domestic power utility companies and supportive government policies toward development of distribution networks to optimize the existing synergies will shape the business dynamics.
   

Composite Insulators Market Share

The top 5 companies in the composite insulators industry including Hitachi Energy, Siemens Energy, Hubbell, PFISTERER, and TE Connectivity collectively accounted for around 38% of the market share in 2024.
 

• Hitachi Energy is popular for its composite insulators due to their superior durability, lightweight design, and high performance under challenging conditions. They offer better resistance to weather, pollution, and electrical stress compared to traditional porcelain insulators. The company’s advanced manufacturing technology, including innovative materials and design improvements, ensures reliability and longevity.
   
• Over the past few years, increasingly focusing on the development of new technologies and products, drawing on their technological ability, global presence, and extensive industry experience to strengthen their position in the composite insulators market.
   
• Siemens Energy is popular for its composite insulators due to their advanced design, high reliability, and excellent performance under harsh environmental conditions. They utilize innovative materials like silicone rubber and modern manufacturing techniques, ensuring durability, electrical efficiency, and safety. Siemens’ strong R&D capabilities and global presence help maintain their market share in the industry.
   
• Hubbell is popular for composite insulators due to its high-quality, innovative products that offer durability, excellent electrical performance, and resistance to environmental stress. They leverage advanced silicone rubber materials and robust manufacturing processes. The company’s strong brand reputation, extensive distribution network, and focus on reliability contribute to capturing market share in the industry.
   
• Strategic alliances and partnerships in growing economies are essential for broadening their market penetration and ensuring consistent supply chains. Companies develop their product offerings, enhance value for customers, and expand their presence in growing and developed markets. These firms are focusing on creating new sophisticated insulator units to address the growing power demand, fortifying network grids, and increasing their presence in industry.
   

Composite Insulators Market Companies

• PFISTERER is known for its innovative solutions regarding the electrical transmission and distribution systems. The company specializes in the design, manufacturing, and supply of high-quality composite insulators, which serve as higher-rated materials for overhead power lines against traditional materials like glass and porcelain. The company’s revenue was USD 435.3 million in 2024.
   
• TE Connectivity is a leading player in the composite insulator market offering various high-quality products in line with the electrical industry’s demands. The company's composite insulators are unmatched in terms of mechanical strength, environmental resilience, and durable service, making high-voltage transmission and distribution systems the perfect candidates for their use. The company’s sales revenue was USD 15.8 billion in 2024.
   
• Siemens Energy with its experience and technological ability, aims to solve the problems of power transmission and distribution systems with high performance. The company's advanced composite insulators focus on improving the reliability and functioning of electric grids in harsh conditions of the external environment. The company’s research & development expenses stood at about USD 1.4 billion in 2024.
   

Major players operating in the composite insulators market are:

• Bonomi
• CYG Insulator
• CTC Insulator
• Deccan Enterprises
• ENSTO
• Gipro
• Hitachi Energy
• Hubbell
• Izoelektro
• Kuvag
• Nanjing Electric Technology
• Navitas Insulators
• Newell Porcelain
• Olectra Greentech
• Peak Demand
• Pfisterer
• Rayphen
• Siemens Energy
• Taporel
• TE Connectivity
   

Composite Insulators Market News

• In June 2025, at the South Asia Expo in Kunming, Jiangxi Johnson Electric Co., Ltd., a prominent insulator manufacturer, showcased its latest high-voltage insulators and smart grid solutions. The company introduced three product lines including composite, porcelain, and glass insulators designed for ultra-high voltage lines. The company’s new Q-8000 ultra-high voltage composite insulator, made with nano-modified silicone rubber, offers superior hydrophobicity and durability in hot, humid conditions typical of South Asia.
   
• In May 2025, Finnish distribution operator Järvi-Suomen Energia began testing Ensto's new composite line post insulators and compatible suspension crossarms in their 24 kV overhead network in Virtasalmi, Eastern Finland. These durable, high-quality products are part of a project to upgrade aging overhead lines to roadside configurations. The composite insulators feature excellent electrical and UV resistance, with self-cleaning silicone flanges ensuring reliable long-term performance. The SH66.1 level bars, designed for 24 kV line construction, complement the insulators and are paired with galvanized steel crossarms engineered to withstand environmental stresses for decades, promising enhanced reliability in harsh conditions.
   
• In December 2024, PFISTERER is set to strengthen its international operations and solidify its foothold in Japan with its intent to increase collaborations with Japanese systems provider Nippon Katan Co., Ltd. Both companies have signed a joint venture cooperation contract to manufacture and promote composite insulators for overhead power lines in Japan.
   
• In December 2024, Contune International Co., Ltd has successfully fulfilled a contract and delivered a high-end thermal-mechanical testing machine to Mexico, thus demonstrating its capability in providing innovative testing services. This machine will significantly improve the manufacture and the quality control of composite insulators in the region which further underscores Continute’s commitment towards innovation and quality across different industries around the world.
   
• In September 2024, Vattenfall, a Swedish distribution system operator (DSO), completed the construction of a new Full Covered Conductor Solution (FCCS) line in northern Sweden. The purpose of this initiative is to improve the region’s overhead power lines and their functional reliability during the harsh winter season with ice and snow accumulation. It offers a more robust and durable network with a longer service life, capable of withstanding the challenging northern weather conditions.
   

The composite insulators market research report includes in-depth coverage of the industry with estimates & forecast in terms of “USD Million” from 2021 to 2034 for the following segments:

Market, By Voltage

• High voltage
• Medium voltage
• Low voltage

Market, By Application

• Cables and transmission lines
• Switchgears
• Transformer
• Bus Bars
• Others

Market, By Product

• Pin insulators
• Suspension insulators
• Shackle insulators
• Other insulators

Market, By End use

• Residential
• Commercial & Industrial
• Utilities

Market, By Rating

• ≤ 11 kV
• > 11 kV to ≤ 22 kV
• > 22 kV to ≤ 33 kV
• > 33 kV to ≤ 72.5 kV
• > 72.5 kV to ≤ 145 kV
• > 145 kV to ≤ 220 kV
• > 220 kV to ≤ 400 kV
• > 400 kV to ≤ 800 kV
• > 800 kV to ≤ 1,200 kV
• > 1,200 kV

Market, By Installation

• Distribution
• Transmission
• Substation
• Railways
• Others

The above information has been provided for the following regions and countries:

• North America
  • U.S.
  • Canada
  • Mexico
• Europe
  • UK
  • Germany
  • France
  • Spain
  • Italy
  • Russia
• Asia Pacific
  • China
  • Japan
  • India
  • South Korea
  • Australia
• Middle East & Africa
  • Saudi Arabia
  • UAE
  • South Africa
• Latin America
  • Brazil
  • Argentina