2022 marked a pivotal year for solar walkway systems, transitioning from concept to large-scale application. Multiple landmark projects were completed globally, signaling a deep integration of photovoltaic technology with urban infrastructure entering a new phase.

Introduction: The path beneath our feet starts generating power

Amid the wave of low-carbon urban transformation, the application of solar photovoltaic technology is no longer confined to rooftops and ground-mounted solar farms. In 2022, a new type of urban infrastructure—the solar walkway system—began quietly reshaping how people perceive the function of roads. These walkable photovoltaic paths not only serve daily pedestrian needs but also convert sunlight into clean electricity to power streetlights, traffic signals, and even nearby buildings.

From the Winter Olympics welcoming corridor in Zhangjiakou, China, to the walkable solar tiles at the Qatar World Cup venues, and the hurricane-resilient sidewalk solar panels in Florida, USA, 2022 witnessed technological breakthroughs, deeper application scenarios, and expanding markets for solar walkway systems worldwide.

I. Technological Breakthroughs: Walkable PV Panels Mature

The core technical challenge of solar walkway systems is how to give inherently fragile photovoltaic cells sufficient mechanical strength to withstand pedestrian and vehicle traffic. In 2022, several companies achieved substantial progress in this field.

The Pavement-Integrated Photovoltaics (PIPV) panels, co-developed by BASF and Canadian company Solar Earth, provided an innovative solution. BASF designed and optimized a high-performance polyurethane material for Solar Earth's PIPV panels, imparting excellent abrasion resistance, superior mechanical properties, and an extended service life. Solar Earth CEO Douglas Matthews noted that these panels can "withstand harsh weather, resist theft and vandalism, and support the weight of trucks without damage," effectively converting traditional infrastructure into a renewable energy resource.

Additionally, the SUNPave patented technology developed by a team at Texas A&M University in Qatar created walkable solar ceramic tiles. By integrating a special structural design within the tiles, the team ensured the photovoltaic cells remain intact even under pedestrian or fire truck loading. SUNPave co-founder Mohamed AlGammal stated, "Our goal is to achieve the same mechanical integrity as ordinary tiles." This technology completed its first public test at the ticketing center of Al Thumama Stadium for the Qatar World Cup. An installation of approximately 50 square meters generates enough electricity to power an entire three-bedroom apartment.

II. Global Landmark Projects: Diverse Scenarios, Innovative Practices

2.1 China: Winter Olympics Corridor and Power-Generating Pavers Advance Together

As a key supporting facility for the Beijing 2022 Winter Olympics, the Zhangjiakou Welcome Corridor PV project demonstrated the viability of photovoltaic infrastructure in large-scale event settings under the theme "smog control, Olympic bid, ecology, green energy, and public benefit."

Chinese companies were equally active in the solar walkway field. Hangxiao Steel Structure's subsidiary, Hite Solar Energy, developed a "rectangular photovoltaic power-generating paver" product, which was installed in Phase I of the Chaoyang County Integrated Smart Energy Project in Liaoning Province, covering an area exceeding 440 square meters. Featuring "daytime power generation and nighttime illumination," the product is primarily used on pedestrian paths and scenic trails, offering a new building-integrated solution for pathway lighting. Hite Solar also announced that its "power-generating highway" product for expressway scenarios had been developed and passed performance tests.

2.2 Tampa, USA: Innovation Born from Hurricane Disaster

The devastation of Hurricane Irma in 2017 left a deep impression on Tampa, Florida—traffic signals failed due to power outages, creating severe safety hazards. Motivated by this, the city launched a pilot project for sidewalk solar panels.

By the end of 2022, the city had installed 84 solar panels embedded into the sidewalk surface at a downtown intersection, featuring anti-slip coating and sufficient load-bearing capacity (withstanding lawnmower traffic). The project cost approximately $45,000. It withstood overcast and rainy conditions during Hurricane Ian, and tests indicated the system could generate about 75% of conventional electricity demand. Tampa's Smart Mobility Manager, Brandon Campbell, summarized the practice as: "Treating our city as a living lab to find solutions in practice."

2.3 Australia: Largest Solar-Powered Trail Lighting Project

Australia also took a leading position. Goulburn, New South Wales, completed the country's largest solar-powered trail lighting project: Leadsun installed 160 intelligent solar lighting poles along approximately 10 kilometers of walking and cycling paths.

The project utilized Leadsun's proprietary all-in-one LED solar lighting technology, with power stored in lithium batteries for three days of autonomy, eliminating the need for trenching and cabling and significantly reducing construction and operating costs. After the project went live, local walking group participants reported that trail usage hours extended from before sunrise well into the evening, with greatly enhanced safety. The local council also planned to extend the project by another 1.5 kilometers.

2.4 Japan: Wattway System Officially Commercialized

The Wattway solar road surface installation equipment, jointly developed by East Asia Road Industry and Colas Japan, officially launched sales in Japan in June 2022. This commercialization marked a substantial step forward for solar walkway technology from the lab to the market.

2.5 Europe: German Solar Bike Path and Hungarian Solar Paving Bricks

Freiburg, Germany, initiated a 300-meter solar bike path project featuring a photovoltaic canopy design, with a total of 912 solar modules installed across 38 hot-dip galvanized steel roof segments. Hungarian startup Platio launched a new solar paving brick suitable for outdoor ground applications such as sidewalks and bike paths, with a special protective layer on the surface to enhance glass durability.

III. Market Outlook: A Billion-Dollar Race Takes Off

Solar walkway systems are not an isolated product category but an integral part of the larger solar transportation product market. According to market research reports, the global solar transportation product market reached approximately 26.406 billion RMB (about $3.6 billion USD) in 2022, with China accounting for roughly 10.174 billion RMB.

From a broader perspective, the global solar road market was valued at approximately $1.4 billion in 2024 and is projected to reach $5.6 billion by 2030, growing at a compound annual growth rate (CAGR) of 25.6%. The solar highway market is growing even faster, valued at $31.35 billion in 2022 and expected to reach $82.16 billion by 2030.

IV. Future Trends: From "Power-Generating Roads" to "Smart City Infrastructure"

The development trajectory in 2022 clearly outlines the direction of solar walkway systems—shifting from a singular power generation function toward integrated smart city infrastructure.

In China, Solar Earth's Amber™ series products have been used in the solar road section of a State Grid demonstration project, China's first three-in-one electric road demonstration project integrating PV power generation, wireless charging, and autonomous driving technology. This trend toward multifunctional integration signals that future roads will not only serve as carriers for vehicles but also become energy harvesting platforms, data transmission nodes, and vital components of smart city networks.

At the policy level, global carbon neutrality goals provide sustained momentum for solar walkway systems. Under China's "dual carbon" policy push, new use cases combining photovoltaics with buildings and transportation infrastructure continue to emerge. US states are advancing such technologies more from an energy resilience and disaster mitigation perspective, while European markets emphasize the synergistic development of green mobility and renewable energy.