The Global Solar Encapsulation for Construction Market was valued at USD 1,970.84 million in 2023 and is projected to reach USD 3,233.18 million by 2029, growing at a Compound Annual Growth Rate (CAGR) of 8.60% during the forecast period (2024–2029). This robust expansion is propelled by the global push for renewable energy, supportive government policies, and the rising integration of Building-Integrated Photovoltaics (BIPV) in commercial and residential construction projects.

As the construction industry pivots towards sustainability and energy efficiency, the protective layers that ensure the longevity and performance of solar panels are more critical than ever. In this blog, we profile the Top 10 Companies in the Solar Encapsulation for Construction Market—material science innovators and chemical giants safeguarding the future of solar energy in our built environment.

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🔟 1. STR Holdings, Inc.

Headquarters: Enfield, Connecticut, USA
Key Offering: Specialty EVA (Ethylene Vinyl Acetate) and POE (Polyolefin Elastomer) Encapsulation Films

STR Holdings is a globally recognized leader in the development and manufacturing of high-performance solar encapsulation films. With decades of expertise in polymer science, the company’s products are engineered to protect solar cells from moisture, UV radiation, and mechanical stress, ensuring module longevity and power output stability.

Innovation and Market Focus:

• Extensive R&D in advanced encapsulant formulations for enhanced durability.
• Strong focus on products compatible with next-generation bifacial and double-glass modules.
• Global supply chain supporting major solar panel manufacturers.

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9️⃣ 2. DuPont de Nemours, Inc.

Headquarters: Wilmington, Delaware, USA
Key Offering: DuPont™ Tedlar® PVF films, Encapsulant Sheets

DuPont is a titan in materials science, and its Tedlar® brand is synonymous with reliability in PV module backsheets and encapsulation. The company provides critical materials that offer exceptional resistance to weathering, UV degradation, and harsh environmental conditions, which is vital for long-term construction-integrated solar applications.

Innovation and Market Focus:

• Pioneering high-performance, durable materials for extreme climate applications.
• Commitment to sustainability with recyclable and lower-carbon-footprint material solutions.
• Collaborations with module makers to set new industry standards for reliability.

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8️⃣ 3. Mitsui Chemicals, Inc.

Headquarters: Tokyo, Japan
Key Offering: EVA Encapsulants, Adhesive Films for BIPV

Mitsui Chemicals is a major global supplier of encapsulation materials, with a significant market share in the Asia-Pacific region. The company’s EVA encapsulants are known for their high transparency, excellent adhesion, and superior resistance to potential-induced degradation (PID).

Innovation and Market Focus:

• Development of fast-curing EVA materials to increase manufacturing throughput.
• Expanding product portfolio to serve the growing BIPV segment, including solutions for solar roofs and facades.
• Strategic focus on enhancing the service life of modules beyond 30 years.

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7️⃣ 4. Hanwha Solutions/Covestro

Headquarters: Seoul, South Korea (Hanwha)
Key Offering: Polyurethane-based Encapsulants, Advanced Polymer Solutions

Through strategic moves, including the acquisition of a significant stake in Covestro, Hanwha Solutions has solidified its position in advanced materials for solar. The company focuses on developing polyurethane and other polymer-based encapsulants that offer flexibility and durability, ideal for innovative BIPV designs.

Innovation and Market Focus:

• Investment in next-generation materials like polyolefins and thermoplastic polyurethane (TPU).
• Driving innovation for lightweight and flexible solar modules for architectural integration.
• Emphasis on creating a circular economy for solar panel materials.

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6️⃣ 5. Hangzhou First PV Material Co., Ltd.

Headquarters: Hangzhou, Zhejiang, China
Key Offering: EVA Encapsulation Films, POE Encapsulation Films

As one of China’s leading encapsulation film producers, Hangzhou First PV Material caters to a massive domestic and international solar panel manufacturing base. The company is crucial in supplying cost-effective, high-quality encapsulation solutions that meet the demanding requirements of high-volume production.

Innovation and Market Focus:

• Large-scale production capacity to meet global demand from Tier-1 module manufacturers.
• Continuous improvement in product quality to reduce degradation and increase module efficiency.
• Expanding POE film production to address the needs of n-type and high-efficiency cell technologies.

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5️⃣ 6. 3M Company

Headquarters: Saint Paul, Minnesota, USA
Key Offering: 3M™ Scotchshield™ Film, Acrylic and Polyolefin-based Encapsulants

Leveraging its vast expertise in adhesives and films, 3M provides innovative encapsulation solutions that enhance the reliability and performance of solar modules. Their products are designed to provide outstanding optical clarity and long-term protection against environmental stressors.

Innovation and Market Focus:

• Proprietary film technologies that maximize light transmission while minimizing degradation.
• Focus on developing solutions that simplify the module manufacturing process.
• Strong commitment to sustainability and reducing the environmental impact of solar products.

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4️⃣ 7. Bridgestone Corporation

Headquarters: Tokyo, Japan
Key Offering: EVA Encapsulation Sheets, Specialty Elastomers

Bridgestone, renowned for its tire technology, applies its advanced polymer and rubber compounding expertise to the solar encapsulation market. The company produces EVA sheets that ensure excellent sealing properties and long-term durability for solar panels used in construction applications.

Innovation and Market Focus:

• Utilization of material science from its core business to enhance encapsulant performance.
• Development of products with high resistance to yellowing and UV exposure.
• Focus on supplying the Japanese and broader Asian markets with high-reliability materials.

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3️⃣ 8. Dow Chemical Company

Headquarters: Midland, Michigan, USA
Key Offering: ENLIGHT™ Polyolefin Encapsulant Films, Adhesive Solutions

Dow brings its formidable chemical engineering capabilities to the solar industry with its ENLIGHT™ series of encapsulant films. These polyolefin-based solutions are designed to offer superior resistance to moisture and PID, which is critical for maintaining high performance over the decades-long lifespan of a solar installation.

Innovation and Market Focus:

• Leading the transition from traditional EVA to more durable polyolefin encapsulants.
• Focus on enabling higher module power outputs and longer warranties.
• Commitment to developing sustainable material solutions aligned with circular economy principles.

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2️⃣ 9. Wacker Chemie AG

Headquarters: Munich, Germany
Key Offering: SILMOST® Silicone Encapsulants, EVA Alternatives

Wacker Chemie is a global leader in silicones and polymer chemistry, offering high-performance encapsulation solutions, particularly for specialized and demanding applications. Their silicone-based encapsulants provide exceptional thermal stability, UV resistance, and longevity, making them ideal for BIPV and harsh environments.

Innovation and Market Focus:

• Expertise in silicone materials that offer superior performance in temperature extremes.
• Development of liquid and gel encapsulants for novel module designs and applications.
• Strong presence in the European market, supporting the region’s ambitious green building standards.

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1️⃣ 10. First Solar, Inc.

Headquarters: Tempe, Arizona, USA
Key Offering: Proprietary Encapsulation System for Thin-Film Cadmium Telluride (CdTe) Modules

First Solar stands out as a vertically integrated manufacturer that develops its own proprietary encapsulation technology tailored for its advanced thin-film modules. Their unique, durable sealing process is a key differentiator, contributing to the renowned long-term reliability and performance of their panels in utility-scale and commercial construction projects.

Innovation and Market Focus:

• Vertically integrated manufacturing with tight control over the encapsulation process.
• Focus on creating a fully integrated, resilient, and sustainable solar module.
• Pioneering high-throughput, resilient module designs with industry-leading durability warranties.

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Global Solar Encapsulation for Construction Market – View in Detailed Research Report

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☀️ Outlook: The Future of Solar Encapsulation is Smarter and More Integrated

The solar encapsulation market is evolving beyond a basic protective function to become an enabler of architectural innovation and higher energy yields. The focus is shifting towards advanced materials that extend module lifespan, improve efficiency, and facilitate the seamless integration of solar technology into buildings.

📈 Key Trends Shaping the Market:

• Material Transition: Gradual shift from standard EVA to premium POE and silicone encapsulants for enhanced durability and PID resistance.
• BIPV Proliferation: Growing demand for encapsulants that enable custom shapes, colors, and transparencies for architectural integration.
• Sustainability Drive: Increased R&D into recyclable encapsulation materials and designs that support end-of-life panel recycling.
• Performance Demands: Encapsulants are being engineered to support higher operating temperatures and newer, more efficient cell technologies like HJT and TOPCon.

The companies profiled above are not just supplying materials; they are providing the essential protective innovation that allows solar energy to become a permanent and productive feature of our homes, offices, and cities.

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Global Solar Encapsulation for Construction Market – View in Detailed Research Report