5kW Solar System for Home: Price, Output & Setup Guide India (2026)

The Short Answer

A 5kW solar system costs ₹2,50,000–₹3,20,000 before subsidy and ₹1,72,000–₹2,42,000 after PM Surya Ghar subsidy of ₹78,000. It generates 20–25 units per day — built for large homes with AC, geysers, and heavy appliance usage. Ideal for 3+ BHK homes with monthly electricity bills of ₹3,500–₹6,000. Requires ~500 sq ft of roof space.

5kW Solar System Price Breakdown

ComponentCost Range
Solar panels (10 × 540W mono)₹85,000–₹1,10,000
On-grid inverter (5kW)₹35,000–₹50,000
Mounting structure₹15,000–₹22,000
Wiring, protection, earthing₹10,000–₹14,000
Installation labour₹8,000–₹12,000
Net metering & DISCOM fees₹3,000–₹6,000
GST (13.8%)₹27,000–₹35,000
Total (before subsidy)₹2,50,000–₹3,20,000
PM Surya Ghar subsidy−₹78,000
Net cost (after subsidy)₹1,72,000–₹2,42,000

Note: Subsidy remains capped at ₹78,000 (same as 3kW). The extra 2kW beyond 3kW is fully at your cost. Despite this, 5kW is worth it if your consumption justifies it.

Full cost guide for all sizes →

Daily and Monthly Output

PeriodOutputBill Savings (at ₹6–₹10/unit)
Per day20–25 units₹120–₹250
Per month600–750 units₹3,600–₹7,500
Per year7,300–9,125 units₹43,800–₹91,250

A 5kW system comfortably offsets electricity bills of ₹3,500–₹7,000/month. In many cases, your net bill drops to just the fixed charges.

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What Can a 5kW System Run?

5kW is the entry point for homes with regular AC usage:

ApplianceWattageHours/dayDaily Units
LED lights (12)120W60.7
Ceiling fans (5)350W103.5
Refrigerator (300L)200W81.6
Inverter AC 1.5 ton1,200W67.2
TV (55")120W50.6
Washing machine500W10.5
Geyser (instant, 3kW)3,000W0.30.9
WiFi + laptops + phones150W101.5
Kitchen (mixer, microwave)1,000W0.50.5
Total17 units

This leaves 3–8 units of daily surplus. A 5kW system runs 1 AC for 6+ hours daily alongside full household loads. For 2+ ACs or EV charging, consider 10kW.

Space and Installation

  • Panels: 10 × 540W monocrystalline panels
  • Roof area: ~500 sq ft (shadow-free)
  • Weight: ~150–200 kg total
  • Installation time: 1–2 days

500 sq ft is available on most independent house terraces but tight for apartments. If space is limited, use higher-wattage panels (580–600W) to reduce panel count, or bifacial panels for extra output from reflected light.

Subsidy and Payback Period

Subsidy remains capped at ₹78,000 (same as 3kW). The financial case for 5kW rests on higher absolute savings, not better subsidy coverage:

TariffNet CostAnnual SavingsPayback
₹5/unit₹2,07,000₹37,500~5.5 years
₹7/unit₹2,07,000₹52,500~3.9 years
₹10/unit₹2,07,000₹75,000~2.8 years

Homes in higher tariff slabs (₹8–₹12/unit) — common in metros like Mumbai, Delhi, Bangalore — see the strongest returns because solar offsets the most expensive units first.

5kW vs 3kW: When to Upgrade

The decision between 3kW and 5kW comes down to consumption:

3kW5kW
Cost after subsidy₹72K–₹1.12L₹1.72L–₹2.42L
Daily output12–15 units20–25 units
AC capability1 unit, 3–4 hrs1 unit, 6–8 hrs
Best bill range₹2K–₹3.5K₹3.5K–₹6K
Extra cost vs 3kW—₹1,00,000–₹1,30,000

Upgrade to 5kW if: You use AC 5+ hours daily, have a geyser, use a washing machine + dryer, or your bill exceeds ₹3,500/month. The extra ₹1L pays back through higher tariff-slab savings.

On-Grid vs Hybrid for 5kW

At the 5kW level, the hybrid option becomes attractive because the absolute cost premium for batteries is proportionally smaller:

  • On-grid 5kW: ₹2,50,000–₹3,20,000 — no backup, lowest cost
  • Hybrid 5kW: ₹3,50,000–₹4,80,000 — adds 3–5 kWh battery for power-cut backup
  • Premium: ₹1,00,000–₹1,60,000 for battery backup

If you currently have a separate home inverter + battery for backup (₹15,000–₹30,000), a hybrid solar system replaces both your solar and backup setup in one unit — often making the total cost comparable.

Get 5kW Solar Quotes

A 5kW system is a significant investment. Compare quotes from verified installers who will design the optimal panel layout, inverter sizing, and wiring for your roof and consumption pattern.

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Common questions

What is the price of a 5kW solar system in India?
A 5kW on-grid system costs ₹2,50,000–₹3,20,000 before subsidy. After PM Surya Ghar subsidy of ₹78,000 (capped at 3kW), your net cost is ₹1,72,000–₹2,42,000. Includes panels, inverter, mounting, installation, and net metering.
How many units does a 5kW solar system generate?
A 5kW system generates 20–25 units per day, or 600–750 units per month. Annual output is 7,300–9,125 units, offsetting ₹43,800–₹91,250 in electricity costs depending on your tariff.
Can a 5kW system run 2 ACs?
Running 2 ACs simultaneously (2–2.5kW combined) would consume most of the system capacity, leaving little for other loads. A 5kW system comfortably runs 1 AC for 6–8 hours daily with full household loads. For 2 ACs, a 10kW system is recommended.
How many panels are needed for 5kW?
With 540W panels, you need 10 panels (10 × 540W = 5,400W). This requires approximately 500 sq ft of shadow-free roof space. Higher-wattage 580–600W panels can reduce count to 9.
Is 5kW solar worth it over 3kW?
Yes, if your monthly bill exceeds ₹3,500. The extra ₹1,00,000–₹1,30,000 over 3kW generates 8–10 additional units/day, saving ₹1,500–₹3,000 more per month. Payback on the incremental cost is 3–5 years, after which the extra savings are pure profit.
What is the payback period for a 5kW system?
3–6 years depending on your electricity tariff. At ₹7/unit, payback is about 4 years. Homes in high-tariff metros (₹8–₹12/unit) see payback in under 3 years. After payback, you save ₹40,000–₹90,000 annually for the remaining system life.

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