Why the Mounting Structure Matters
The mounting structure is the foundation of your solar system. It holds panels at the correct angle for maximum sunlight exposure, withstands wind loads and weather conditions, and determines how long your system lasts. A poorly designed structure can lead to panel damage, roof leaks, reduced generation, and safety hazards. In Delhi, where summers bring high winds and monsoons bring heavy rain, structure quality is especially important.
Types of Solar Mounting Structures
There are three main types: Elevated structures raise panels 4–5 feet above the roof on a metal framework, creating usable space underneath for water tanks or storage — most common for residential homes in Delhi. Flush-mount structures fix panels flat against the roof surface at a slight tilt, best for metal shed roofs and buildings where height is a concern. Ground-mount structures are installed on open land using concrete foundations, ideal for farmhouses and industrial sites with available ground space.
GI vs Aluminium: Choosing the Right Material
Hot-dip galvanised iron (GI) structures are the most common choice — strong, cost-effective, and suitable for most residential and commercial installations. They have a lifespan of 15–20 years with proper galvanisation. Aluminium structures are lighter, corrosion-resistant, and last longer (25+ years), but cost more. They are preferred for coastal areas or premium installations. In Delhi NCR, GI structures are the standard choice for most rooftop installations.
Roof Compatibility and Load Assessment
Different roof types need different mounting approaches. RCC roofs (most Delhi homes) can support both elevated and flush structures with concrete block foundations or chemical anchoring. Metal sheet roofs use rail-based clamp systems that attach without drilling holes. Tiled or sloped roofs need specialised brackets. Before installation, a structural assessment verifies that your roof can safely bear the additional load of panels and structure (typically 15–20 kg per sq meter).
Wind Load and Safety Considerations
Solar structures must withstand wind speeds of 150–180 km/h as per Indian standards. Key safety factors include: proper bolt torque specifications, adequate cross-bracing, correct panel clamping pressure, and ground bonding for lightning protection. In elevated structures, wind can create uplift forces — the structure design must account for this with properly sized footings and anchoring. Y2 Solar designs all structures to comply with IS 875 wind load standards.
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