Complete Solar System for Home in India: Every Component Explained (2026)

A complete home solar system has six core components: solar panels, inverter, mounting structure, wiring and protection devices, net meter, and (for off-grid/hybrid) batteries. A typical 3kW on-grid system includes 6 panels, 1 inverter, mounting rails, DC/AC cabling, and a bi-directional meter — all installed in 1–2 days. Total cost: ₹1,50,000–₹1,90,000 before subsidy.

The mounting structure secures panels to your roof at the correct angle.

• Material: Hot-dip galvanised iron (most common) or anodised aluminium (lighter, corrosion-resistant, costs 20–30% more).
• Types:
  • Flush mount — panels sit flat on an RCC roof with minimal tilt. Simplest and cheapest.
  • Elevated tilt — raises panels 1–2 feet with 10–15° south-facing tilt for optimal annual output.
  • Ballasted mount — weighted frames that sit on the roof without drilling. Used when waterproofing cannot be penetrated.
• Cost: ₹3,000–₹8,000 per kW depending on type and material.
• Lifespan: 25+ years. Galvanised iron may need anti-rust treatment in coastal areas.

Electrical components connect everything safely:

• DC solar cables: UV-resistant, double-insulated cables from panels to inverter. 4mm² for small systems, 6mm² for 5kW+.
• AC cables: From inverter to distribution board and net meter. Standard electrical cables.
• DC isolator: A switch between panels and inverter for safe maintenance disconnect.
• AC isolator: A switch between inverter and the grid connection.
• Surge protection device (SPD): Protects the inverter from lightning-induced voltage spikes. Critical in lightning-prone areas.
• MCB/MCCB: Circuit breakers sized for the system capacity.
• Earthing: Dedicated earth pit with copper earthing strip for panel frames and inverter body. Mandatory safety requirement.

Cost: ₹4,000–₹14,000 total depending on system size and cable run length.

A bi-directional (net) meter replaces your existing electricity meter for on-grid and hybrid systems.

• Function: Records electricity flowing both ways — import (grid to home) and export (home to grid).
• Supplied by: Your DISCOM, after the net metering application is approved.
• Cost: ₹1,500–₹4,000 (paid to DISCOM as part of the application fee). Some states provide the meter free.
• Installation: DISCOM technician replaces your existing meter. Takes 1–2 hours.
• Timeline: 2–6 weeks from application to meter installation, depending on your DISCOM backlog.

How net metering works →

The complete energy flow in a home solar system:

1. Sunlight → Panels: Photovoltaic cells convert light to DC electricity.
2. Panels → Inverter (via DC cables): DC flows through the isolator to the inverter.
3. Inverter → Home (via AC cables): Inverter outputs 230V AC to your distribution board.
4. Home → Appliances: Your switchboard distributes solar AC to all circuits normally.
5. Surplus → Grid (via net meter): Unconsumed power flows out through the bi-directional meter.
6. Grid → Home (at night): When solar is unavailable, the grid supplies power as usual.

For off-grid: step 5–6 replace with battery charge/discharge cycles. For hybrid: steps 5–6 happen through the battery with grid as secondary backup.

Detailed working explanation →

A properly designed system balances all components for optimal performance. Solar Vipani connects you with verified installers who provide itemised quotes — you see exactly what panels, inverter, and components are included.

Get your free complete system quote →