The Global Electrochromic (EC) Windows Market was valued at USD 2.21 Billion in 2025 and is projected to reach USD 5.68 Billion by 2034, growing at a Compound Annual Growth Rate (CAGR) of 11.9% during the forecast period (2024–2030). This remarkable growth is driven by escalating global energy efficiency mandates, a surge in green building construction, heightened demand for occupant comfort, and technological advancements making smart windows more cost-competitive.

Electrochromic windows, which dynamically tint on demand to control light and heat, are no longer a luxury technology. They are becoming a cornerstone of intelligent building design. As the market shifts from traditional static glazing to dynamic, digitally controllable facades, a group of pioneering companies—specialty manufacturers, glass giants, and tech innovators—are leading the charge. In this blog, we profile the Top 10 Companies in the Electrochromic Windows Industry, the firms defining the future of smart, sustainable glass.

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🔟 1. View, Inc.

Headquarters: Milpitas, California, USA
Key Offering: View Dynamic Glass, an integrated smart-glass platform.

View, Inc. is arguably the most recognized brand in the electrochromic glass market today. The company’s flagship product, View Dynamic Glass, is a cloud-connected smart glass that automatically tints in response to the sun, optimizing for daylight and views while cutting glare and heat. Their full-window IGUs (Insulating Glass Units) are installed in millions of square feet of commercial real estate, establishing them as the market-share leader in networked EC windows.

Technology & Market Leadership:

• Pioneer of cloud-connected smart windows with a proprietary smart-building network.

• Strategic partnerships with major glass giants for large-scale manufacturing, including co-located production.

• Focus on software-driven data insights to improve building performance and occupant wellness.

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9️⃣ 2. Saint-Gobain

Headquarters: Courbevoie, France
Key Offering: SageGlass^® Dynamic Glazing.

A global powerhouse in building materials, Saint-Gobain’s SageGlass subsidiary is a foundational player in electrochromic technology. SageGlass produces high-performance dynamic glass for a wide range of applications, from monumental architectural projects to luxury residential. Their deep expertise in integrated glass solutions, combined with Saint-Gobain’s immense distribution and technical support network, makes them a dominant force worldwide.

Technology & Market Leadership:

• One of the oldest and most established electrochromic glass manufacturers, with a strong patent portfolio.

• Offers a comprehensive range of product lines for commercial, healthcare, and residential markets.

• Leverages Saint-Gobain’s global R&D and production capabilities for innovation and scale.

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8️⃣ 3. AGC Inc.

Headquarters: Tokyo, Japan
Key Offering: EControl^® Dynamic Glass and other high-performance glazing solutions.

AGC (formerly Asahi Glass) is a leading global glass manufacturer with a significant stake in the smart glass sector. Through its partnership with Kinestral Technologies (see Halio below) and proprietary developments, AGC integrates dynamic glazing into its broad product portfolio. The company’s strength lies in its ability to offer electrochromic windows as part of complete, high-performance façade systems for the Asian and global markets.

Technology & Market Leadership:

• Major manufacturer supplying electrochromic glass on a global scale.

• Strategic alliance with Kinestral Technologies to manufacture and market Halio smart-tinting glass.

• Focus on combining dynamic glazing with other AGC technologies like low-E coatings and laminated glass.

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7️⃣ 4. Corning Incorporated

Headquarters: Corning, New York, USA
Key Offering: Advanced glass substrates and components for electrochromic devices.

Corning plays a crucial, albeit often upstream, role in the electrochromic ecosystem. The company is a world leader in specialty glasses and advanced materials. It supplies high-quality, ultra-thin glass substrates that are essential for manufacturing durable and efficient solid-state electrochromic devices. Many leading EC window makers rely on Corning’s material science expertise for their core components.

Technology & Market Leadership:

• Key supplier of specialty glass substrates enabling thinner, more robust, and higher-performance EC devices.

• Drives innovation in the fundamental materials that improve switching speed, durability, and optical clarity.

• R&D focus on next-generation materials for solid-state smart windows and displays.

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6️⃣ 5. Gentex Corporation

Headquarters: Zeeland, Michigan, USA
Key Offering: HomeLink^® integrated smart home solutions; commercial Full Display Mirror^® with EC dimming.

While a titan in automotive electrochromic mirrors, Gentex has strategically leveraged its core EC technology into the architectural and aerospace markets. The company’s deep manufacturing expertise in applying thin-film coatings at scale gives it a significant cost and quality advantage. Their offerings for residential and commercial windows are a growing segment of their business.

Technology & Market Leadership:

• World’s largest producer of automatic-dimming electrochromic mirrors for vehicles.

• Successfully translating automotive-grade durability and manufacturing efficiency to architectural glass.

• Integrated solutions approach, combining EC windows with connected home and building systems.

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5️⃣ 6. Kinestral Technologies, Inc. (Halio)

Headquarters: Hayward, California, USA
Key Offering: Halio^® Smart-Tinting Glass.

Kinestral is a technology disruptor focused solely on the architectural market. Their Halio smart-tinting glass is renowned for its fast switching speed, deep black tint state, and high optical clarity. The company follows a fabless manufacturing model, partnering with industry giants like AGC to produce its glass, allowing it to focus intensely on perfecting the user experience and control software.

Technology & Market Leadership:

• Focus on achieving the fastest switching speeds in the market (seconds, not minutes).

• Proprietary solid-state nanotechnology for enhanced durability and performance.

• Strategic manufacturing and go-to-market partnership with AGC Inc.

Download FREE Sample Report: Global Electrochromic (EC) Windows Market – View in Detailed Research Report

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4️⃣ 7. Vitro Architectural Glass

Headquarters: Pittsburgh, Pennsylvania, USA
Key Offering: Solarban^®, Acuity^®, and other high-performance glass; partner for EC solutions.

Vitro is North America’s largest glass manufacturer and a critical partner in the EC windows supply chain. While not an EC technology developer itself, Vitro is a primary fabricator, laminating, and insulating partner for companies like SageGlass. They incorporate dynamic glass panes into their high-performance IGU lines, ensuring quality and reliability for demanding architectural projects.

Technology & Market Leadership:

• Leading glass fabricator and IGU manufacturer for the North American architectural market.

• Essential downstream partner that enables EC glass to be integrated into standard and custom window systems.

• Deep expertise in glass processing, tempering, and coating ensures performance durability.

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3️⃣ 8. RavenWindow (RavenBrick LLC)

Headquarters: Denver, Colorado, USA
Key Offering: RavenWindow^®, a passive dynamic window technology.

RavenWindow stands out with a unique, “passive” approach to dynamic glazing. Instead of using electricity to trigger a chemical tint (like traditional EC), their technology uses a thermochromic layer that responds automatically to temperature changes. This offers significant advantages in simplicity, cost (no wiring or controls needed), and reliability, particularly for retrofit and certain new-build applications.

Technology & Market Leadership:

• Pioneer of self-tinting, “passive dynamic” windows that require no wiring, power, or controls.

• Focus on mid-market affordability and ease of installation, expanding the addressable market.

• Strong value proposition for projects prioritizing energy savings with minimal operational complexity.

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2️⃣ 9. Polytronix, Inc.

Headquarters: Richardson, Texas, USA
Key Offering: PrivacySmart^® PDLC (Polymer Dispersed Liquid Crystal) and SPD (Suspended Particle Device) films for switchable glass.

Polytronix is a leading developer and manufacturer of switchable film technologies, primarily PDLC. While PDLC is distinct from electrochromic (it switches between translucent and clear for privacy, not tint for solar control), Polytronix is a key player in the broader smart glass market. Their technology is often used in interior partitions, skylights, and alongside EC in hybrid solutions, making them an important ecosystem contributor.

Technology & Market Leadership:

• Leading supplier of PDLC switchable privacy films and laminates globally.

• Expertise in integrating smart films into laminated glass for diverse applications.

• Driving innovation in film-based smart glass solutions for cost-sensitive and interior markets.

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1️⃣ 10. Scienstry, Inc. (formerly Pleotint, LLC)

Headquarters: West Olive, Michigan, USA
Key Offering: Suntuitive^® R^• dynamic glass.

Scienstry’s Suntuitive glass represents another alternative passive technology. It uses thermochromic laminated interlayers that automatically tint in direct response to solar heat, not air temperature. This provides dynamic solar control to reduce cooling loads and glare. Like RavenWindow, its passive nature eliminates wiring and controls, appealing to a broad segment of the commercial and residential markets seeking simplicity and proven performance.

Technology & Market Leadership:

• Provider of the world’s first and leading thermotropic (heat-reactive) dynamic glass.

• Passive technology integrated into the glass lamination process, compatible with most window types.

• Strong track record in retrofit applications and markets with high solar gain challenges.

Read Full Report Here: Global Electrochromic (EC) Windows Market – View in Detailed Research Report

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🏙️ Outlook: The Future of Windows Is Smart, Connected, and Sustainable

The electrochromic windows market is at an inflection point, transitioning from a niche, high-end product to a mainstream building component. The convergence of stricter energy codes, corporate sustainability goals, and the rise of smart buildings is creating unprecedented demand.

📈 Key Trends Shaping the Market:

• Cost Reduction & Manufacturing Scale: Continuous process improvements and scaling of production (like co-located fabrication) are steadily lowering the price premium of EC windows, accelerating adoption.

• Integration with Building Ecosystems: EC windows are becoming a critical data point and controllable asset within broader Building Management Systems (BMS), HVAC, and IoT networks, optimizing total building energy use.

• Rise of Hybrid & Passive Solutions: Technologies like thermochromics are gaining traction for specific use cases, offering a complementary, often lower-cost path to dynamic solar control alongside traditional active EC.

• Focus on Health & Wellness: Beyond energy, the value proposition is expanding to occupant comfort—reducing glare on screens, enhancing views, and supporting circadian rhythms—which is becoming a major driver in workplaces and healthcare.

Read Full Report Here: Global Electrochromic (EC) Windows Market – View in Detailed Research Report

The companies profiled above are not just selling windows; they are enabling a fundamental shift in how buildings interact with their environment. They are at the forefront of creating responsive, energy-generating building envelopes that redefine comfort, efficiency, and architectural design for the 21st century.