I. Introduction: The “Hidden Need” of the PV Era

By 2022, global installed solar PV capacity continued to rise sharply. However, as rooftop distributed projects and large‑scale ground‑mounted power stations expanded, a basic but deadly issue became increasingly prominent: how to ensure safe walking for maintenance personnel among PV arrays. Traditional metal walkways suffer from short service life in corrosive environments and present electrical conduction risks, while wooden or simple plastic treads cannot meet long‑term load requirements. Against this backdrop, the FRP solar walkway became a hot topic in the industry in 2022, viewed as a key solution to fill the “safety gap” in PV infrastructure.

II. What is an FRP Walkway? Decoding the “Safety Guardian” of Solar Farms

An FRP solar walkway is a pathway system made of glass‑fiber‑reinforced plastic, designed specifically for maintenance access on PV plants. Unlike traditional metal or concrete materials, FRP achieves an ideal balance between mechanical performance and chemical stability through the combination of glass fibers and a polymer resin matrix.

In 2022, standard configurations for FRP solar walkways typically included: grating panels with 38×38 mm or 40×40 mm mesh, thickness between 25‑30 mm, yellow colour (compliant with OSHA safety standards), and dedicated 304 or 316 stainless steel fasteners for rooftop fixing. This design not only provides high load‑bearing capacity and an anti‑slip surface but also greatly simplifies installation.

III. Addressing the Pain Points: How FRP Walkways Solve Three Chronic PV Problems

The rapid adoption of FRP walkways in 2022 was no coincidence. Multiple companies and research institutions pointed out through comparative analysis that FRP materials precisely target three core operational pain points of PV plants:

Solving corrosion and durability problems: PV plants are often built on rooftops, coastal tidal flats, or chemical plant areas with aggressive environments. FRP materials are highly resistant to acids, alkalis, salts, and other corrosive agents, offering a service life far exceeding that of traditional metals with zero maintenance. This provides a solid infrastructure guarantee for the long‑term stable operation of PV projects.

Eliminating electrical safety hazards: PV systems involve high DC voltages during operation. Metal walkways can become conductive in wet conditions. FRP walkways are electrically insulating, giving them an irreplaceable advantage in protecting maintenance personnel.

Reducing life‑cycle costs: In the short term, the procurement cost of FRP may be higher than that of ordinary carbon steel. However, over the full life cycle, FRP walkways offer far better overall economics due to maintenance‑free operation, easy installation (no need for heavy lifting equipment), and long service life.

IV. 2022 Milestones: A Triple Advance in Markets, Projects, and Standards

In 2022, the FRP solar walkway achieved several landmark events, marking the technology’s shift from a “niche option” to “industry consensus”:

Large‑scale projects set benchmarks: A milestone project was completed in Southeast Asia – the 1.2 MW solar Klip‑Lok mounting system in Indonesia, which integrated FRP walkways and cable trays. It became a benchmark for high‑quality, sustainable, and safety‑oriented solar projects in the region.

Leading companies accelerate deployment: An executive at India’s Aeron Composite stated clearly in industry media that the acceptance of FRP walkways in the renewable energy sector is extremely high. The company has become one of the largest manufacturers of FRP/GRP walkway gratings, exporting to more than 30 countries.

Technical standards begin to take shape: In China, industry leaders such as JinkoSolar initiated discussions and the drafting of a Technical Standard for Glass‑Fiber‑Reinforced Composite Frames for Crystalline Silicon PV Modules. Although the standard primarily addresses frames, its findings on composite material strength (flexural strength >1000 MPa, far exceeding the 300 MPa of aluminium frames), carbon footprint (only 1/10 that of aluminium frames), and weatherability provide highly valuable technical references and a direction for standardisation of FRP materials across PV applications.

V. Case Spotlight: Enterprise Developments Highlight FRP Walkway Advantages

Beyond the macro trends, specific company actions in 2022 clearly demonstrate the core advantages of FRP walkways:

UISOLAR pointed out in May 2022 that FRP solar walkways not only effectively extend the service life of industrial/commercial rooftops but also provide safe access for rooftop equipment. In August, the company announced completion of a 121.8 kW rooftop solar project in Hong Kong, further validating the practicality of FRP‑integrated solutions.

Sunforson analysed the technical and cost advantages of FRP walkways: their strength is ten times that of rigid PVC, with absolute strength exceeding that of aluminium and ordinary steel. They are easy to cut and install, requiring no hot work or heavy lifting equipment – only a small labour force and basic power tools – dramatically reducing installation costs.

AMROCK emphasised the anti‑slip design and all‑weather accessibility of FRP walkways. The company’s FRP rooftop walkway system provides safe, controlled rooftop access specifically for solar panel maintenance, avoiding unnecessary roof damage.

He Gao Industrial shared mechanical load test data for composite frames at the end of 2022: under mechanical loads of –5400 Pa/+2400 Pa, composite‑frame modules showed no visible deformation and minimal power degradation, confirming the reliability of FRP materials in load‑bearing and durability.