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Residential Guide

Residential Rooftop Solar: Everything Homeowners Need to Know

Sizing, costs, subsidy, brands and maintenance — a homeowner's checklist before going solar.

Zolar Energies18 June 20266 min read

How big a system do you need?

Divide your average monthly units by ~120. A home using 360 units a month typically needs a 3 kW system.

What does it cost?

Expect ₹55,000–₹70,000 per kW before subsidy. A 3 kW system qualifies for the maximum ₹78,000 central subsidy.

Which system type?

  • On-grid — best savings, no batteries
  • Hybrid — savings plus backup if you face power cuts

Checklist before you sign

  • Registered vendor under PM Surya Ghar
  • DCR modules for subsidy eligibility
  • Hot-dip galvanised structure
  • Proper earthing and lightning arrestor
  • Monitoring app and clear warranty documents