1. 2024 PV Mounting Market Landscape: From “Support Frame” to “Core System”

In 2024, solar mounting systems are undergoing a profound industrial upgrade. The continuous expansion of global installed capacity demands higher structural safety across PV plants. What was once simply a “frame to hold panels” has become a critical subsystem requiring rigorous engineering validation.

Market data shows that the global PV mounting market continues to grow in 2024. The top five major manufacturers – AEROCOMPACT, Mounting Systems, K2 Systems, IronRidge, Renusol – hold a significant international share. Meanwhile, Chinese companies are rapidly rising thanks to technological accumulation and scale production advantages. Arctech, GOSOL, Trina Solar, Clenergy, Mibet (Xiamen), Antai Energy, Jusheng Technology, Grace Solar, Wision Solar, and Xinrun Hengxin were selected as the top ten PV mounting brands in China in 2024. Arctech’s product line includes solar trackers, fixed mounts, and BIPV systems, with manufacturing bases in Changzhou (Jiangsu), Fanchang (Anhui), Susong (Anhui), and Gujarat (India) – a global footprint that is increasingly comprehensive. Clenergy has been operating in the UK for over a decade and has been awarded “Top PV Brand” in the UK by EUPD Research. Antai Energy secured a 300MW tracking system project in Spain and a 30MW fixed ground system in Finland in 2023, with cumulative global shipments reaching 33.2GW.

The global mounting market is primarily divided into two installation types: rooftop and ground‑mount. Rooftop mounts rely on the building’s structural capacity, while ground‑mount systems require independent support structures. In many ground‑mount scenarios, complex terrain or large open spaces increase the importance of foundation strength – highlighting the growing significance of foundations.

2. Comparison of Mounting System Types: Fixed, Adjustable, and Tracking

2.1 Fixed Tilt Mounts

Fixed tilt mounts keep panels at a constant angle, typically set between 15° and 35° based on the site latitude. Their main advantages are simplicity and low cost – installation runs about $0.08–0.12/W – and they account for roughly 70% of the large‑scale PV market. Representative systems like SunRack use concrete ballast or screw pile foundations and suit most soil conditions.

However, fixed angles cause a 7–12% annual energy loss compared to adjustable systems, especially at high latitudes. Still, for remote sites with limited maintenance, fixed mounts remain reliable.

2.2 Adjustable Tilt Mounts

Adjustable tilt systems allow 3–4 seasonal adjustments per year, optimizing panel orientation as the sun’s elevation changes, boosting yield by about 5%. Systems like SolarTerrace MAC use ratcheting mechanisms to achieve ±15° manual adjustment.

Economically, adjustable systems add $0.03–0.05/W upfront over fixed mounts but generate an extra 500–700 kWh per MW annually. For a 5MW PV plant in Colorado, a December yield increase of 22% was recorded. However manual adjustments require labor – about $1500/acre/year. At latitudes above 55°N, payback occurs in 6–8 years.

2.3 Tracking Systems

Single‑axis trackers increase yield by 15–25% but cost twice as much as fixed mounts. Dual‑axis tracking can boost yield by ~30% at roughly three times the cost. Trackers are best used in high DNI (Direct Normal Irradiance) regions; in cloudy areas the gain usually stays below 8%.

Land use: trackers need 30–40% more land than fixed mounts, but produce 1.5–1.8 times more energy per unit area. O&M costs for trackers are $8–12/kW/year, compared to $4–6/kW for fixed mounts.

Comprehensive Comparison of Three Mount Types

3. Foundation Technology Solutions: From Traditional Concrete to Rapid Installation

The foundation is the load‑bearing base for ground‑mount solar arrays. Its design and construction quality directly impact structural safety and service life. In 2024, three main foundation solutions are widely applied.

3.1 Poured Concrete Foundation

Traditional poured concrete involves excavating holes at designed points, embedding steel posts, pouring concrete, and waiting for full curing. Typical hole depth is 3–4 ft (0.9–1.2 m), diameter 12–24 in (30–61 cm). Post spacing is usually 6–8 ft (1.8–2.4 m), using 2‑inch or 3‑inch (51–76 mm) hot‑dip galvanized steel pipe.

Concrete offers excellent stability in flood‑prone areas, with anchorage depth up to 2.5 times that of standard screw piles, preventing structural movement in soft or saturated soils. For permafrost, screw piles with torque rating ≥3000 N·m are needed; some products like SunRack GM‑02GI reach 4500 N·m, enough to penetrate 2 m of frozen ground.

Drawbacks: heavy machinery required, skilled crews, detailed geotechnical surveys, and waiting for concrete cure – which can delay project timelines and add cost.

3.2 Screw Pile & Ground Anchor Systems

Screw piles (helical anchors) are rotated into the ground using blades, requiring no curing time and being about 70% faster to install than concrete – especially suitable for rock, clay, or difficult soils.

In 2024, the Osprey PowerPlatform® by Nuance Energy Group is a notable solution. It uses 1.5‑inch hot‑dip galvanized anchors with insertion teeth. Installation requires no excavation or concrete – only a hand‑held rotary hammer and drill. Post heights are adjustable with over two feet of range, ideal for uneven terrain.

Installation efficiency: Nuance reports that three workers can install a complete 6kW system in one hour. For a 2MW plant, traditional methods take about 60 days, while this anchor system reduces it to 16 days.

3.3 Ballasted Foundation Systems

Ballasted foundations are common on rooftops or specific ground situations where penetrating the existing surface is undesirable. Precast concrete blocks or cast‑in‑place concrete hold the mounting structure by dead weight. This solution works well on soft backfill or where lateral bearing capacity is low and avoids damaging the original surface. AEROCOMPACT’s COMPACTFLAT S_BASE (August 2024) represents the latest trend – an integrated ballast tray in a lightweight base plate, with brackets that click directly into the base without any tools. Few parts, low shipping/handling space, and compatible with large panels up to 2500 mm long.

Key Differences Between Foundation Types

4. Major Mounting Product Brands Overview

4.1 International Tier‑1 Brands

IronRidge – Known for robust ground‑mount systems. Modular design supports flexible configuration of various panel sizes and orientations. Structural materials withstand severe weather and maintain low failure rates over long operating lives.

Unirac – Combines cost‑effectiveness with installation flexibility. Performs well across different project scales. User‑friendly design reduces construction time and labor costs.

K2 Systems – Comprehensive solutions from rooftop to ground, with mature product lines in both railed and rail‑less configurations. K2’s engineering guides and proprietary hardware perform well under moderate wind and snow loads.

Schletter Group – Long‑established global manufacturer with high market recognition in Europe and the Americas, offering both trackers and fixed mounts.

4.2 Leading Chinese Brands

Arctech – A front‑runner in China’s PV mounting industry, covering trackers, fixed mounts, and BIPV. Four major manufacturing bases in Changzhou (Jiangsu), Fanchang (Anhui), Susong (Anhui), and Gujarat (India). Its advanced technology and global footprint are well‑regarded at home and abroad.

Clenergy – Focuses on smart PV and digital energy management solutions, exporting to over 50 countries. At the 2024 UK Solar & Storage Live, its SolarTerrace Eco ground mounting system drew attention for excellent corrosion resistance and structural design suitable for complex topographies.

Antai Energy – Offers full range of fixed mounts, trackers, and BIPV. The 2024 “Yuguang‑Space” tracker uses multi‑point drive and FOC brushless motor technology, with >30 year service life and completely maintenance‑free over plant lifetime, reducing mounting system costs by up to 18%.

Grace Solar – At the 2024 French smart energy show, its “Nenghui” ground mounting system used all‑aluminum technology – stable, robust, and highly adaptable to sloped and hilly terrain.

Mibet – Covers trackers, rooftop, ground, and floating systems. At the 2024 UK show, its G4N floating system featured HDPE all‑plastic pontoons with high tensile strength, temperature resistance, impact resistance, and weather durability.

5. How to Choose the Right Mount & Foundation for Your Project: Key Decision Dimensions

5.1 Soil & Geological Assessment

Soil type is the primary factor in foundation selection. Clay is generally good for screw piles; loose sand suits concrete. A geotechnical survey to obtain bearing capacity parameters is essential.

5.2 Wind & Snow Load Validation

Ensure the mounting system meets local extreme environmental load requirements. Quality products have wind load ratings up to 60 m/s (216 km/h) and snow loads up to 5.4 kPa (~3 m of snow). Systems meeting BS 6399‑2 have a safety margin about 30% higher under dynamic wind loads than those meeting only IEC 61215.

In hurricane‑prone areas, prefer steel brackets with 10 mm leg thickness over standard 6 mm to improve fatigue strength. In heavy snow areas, dual‑axis adjustable systems can be set to a steep angle (e.g., 45° in winter) to shed snow naturally, reducing accumulation by about 80%.

5.3 Material Selection Rationale

Galvanized steel – ~60% market share. Cost‑performance ratio of $1.50–2.20/kg. Highest load bearing and structural damage resistance. Excellent for cold climates (down to -40°C) and extreme wind conditions.

Anodized aluminum – ~30% market share. About 40% lighter than steel, with outstanding corrosion resistance in coastal high‑salt environments. However, lower temperature limit of -20°C makes it unsuitable for extremely cold regions. Using uncoated carbon steel near the sea can lead to significant rust within five years.

Fasteners & accessories – Must also be corrosion‑resistant. PV projects use hundreds of bolts and grounding components; small‑part corrosion can severely compromise system durability.

5.4 Installation Efficiency & Total Cost of Ownership

Shorter construction timelines reduce financial costs in large‑scale projects. Screw piles and rapid ground anchors break free from the 24‑hour concrete cure bottleneck, dramatically increasing delivery speed. Systems with simple, standardized parts reduce reliance on highly skilled labor and lower field error rates.

5.5 Certifications & Technical Standards

Choosing mounts with UL 2703 and IEC 61730 certification significantly reduces the risk of premature aging due to structural issues. Uncertified mounts that ignore load considerations can create back‑side stress on PV modules, reducing their useful life.

Quick Selection Guide