# How Much Can Solar Save You in India? Savings Calculator & Real Examples **Last Updated:** March 10, 2026 "How much will I actually save?" is the first question every Indian homeowner asks before going solar. The honest answer: it depends on your city, electricity tariff, roof size, and consumption — but for most urban Indian homes, solar pays back in 4–7 years and then generates free electricity for 20+ more years. Let's run real calculations. --- ## The Key Variables That Determine Your Savings ### 1. Electricity Tariff (Per Unit Cost) This is the most important variable. Higher tariffs = more savings per unit of solar generated. | State | Typical Residential Tariff | Solar ROI | |-------|--------------------------|-----------| | Mumbai (Adani) | ₹9–₹12/unit | Excellent | | Delhi | ₹5–₹8/unit | Good | | Bangalore | ₹5–₹8/unit | Good | | Chennai | ₹3.5–₹6/unit | Moderate | | Ahmedabad | ₹4–₹6/unit | Moderate | | Jaipur | ₹5–₹8/unit | Good | ### 2. Solar Generation (How Much Your System Produces) Generation depends on peak sun hours in your city: | City | Peak Sun Hours | 1 kW Monthly Generation | |------|--------------|------------------------| | Jaipur | 6.5 hours | 195 units | | Ahmedabad | 6.0 hours | 180 units | | Delhi | 5.5 hours | 165 units | | Hyderabad | 5.5 hours | 165 units | | Pune | 5.5 hours | 165 units | | Mumbai | 5.0 hours | 150 units | | Bangalore | 5.0 hours | 150 units | | Chennai | 5.0 hours | 150 units | | Kolkata | 4.5 hours | 135 units | ### 3. System Cost (After Subsidy) | System | Before Subsidy | PM Surya Ghar Subsidy | Net Cost | |--------|---------------|----------------------|----------| | 2 kW | ₹1,10,000–₹1,40,000 | ₹48,000 | ₹62,000–₹92,000 | | 3 kW | ₹1,50,000–₹1,90,000 | ₹78,000 | ₹72,000–₹1,12,000 | | 5 kW | ₹2,40,000–₹3,10,000 | ₹78,000 | ₹1,62,000–₹2,32,000 | --- ## Real Example 1: Mumbai Family (3 kW System) **Family profile:** - 3 BHK apartment in Andheri - Monthly consumption: 350 units - Monthly bill: ₹4,200 (Adani Electricity @ ~₹12/unit all-in) **Solar system:** - 3 kW on-grid system (8 panels of 375W each) - Monthly generation: 450 units (5 peak sun hours × 30 days × 3 kW) - Export to grid: ~100 units/month (after consuming 350) **Monthly savings:** - Self-consumed solar: 350 units × ₹12 = ₹4,200 savings - Export credit: 100 units × ₹4/unit (grid rate) = ₹400 - **Total monthly savings: ₹4,600** **Investment:** - System cost: ₹1,75,000 - PM Surya Ghar subsidy: ₹78,000 - Net investment: ₹97,000 **Payback:** ₹97,000 ÷ ₹55,200/year = **1.75 years (21 months)** **25-year total savings (adjusted for 5% annual tariff increase):** - Year 1: ₹55,200 - Year 5: ~₹70,000 - Year 10: ~₹89,000 - **25-year total: ~₹28 lakh** from a ₹97,000 investment --- ## Real Example 2: Delhi NCR Home (5 kW System) **Family profile:** - Independent house in Noida - Monthly consumption: 600 units - Monthly bill: ₹4,800 (BSES @ ₹8/unit) **Solar system:** - 5 kW on-grid system - Monthly generation: ~825 units (5.5 sun hours × 5 kW × 30 days) - Self-consumption: 600 units - Export: ~225 units/month **Monthly savings:** - Self-consumed solar: 600 units × ₹8 = ₹4,800 - Export credit: 225 units × ₹3.50/unit = ₹787 - **Total: ₹5,587/month** **Investment:** - System cost: ₹2,80,000 - Subsidy: ₹78,000 - Net: ₹2,02,000 **Payback:** ₹2,02,000 ÷ ₹67,044/year = **3 years** **25-year return:** ~₹35 lakh (with 5% annual tariff increase) --- ## Real Example 3: Jaipur Home (3 kW System) **Why Jaipur is the best case in India:** - 6.5 peak sun hours (highest in India) - Even moderate tariffs give great returns **Family profile:** - 3 BHK home - Monthly consumption: 300 units - Monthly bill: ₹2,400 (JVVNL @ ₹8/unit) **Solar generation:** - 3 kW × 6.5 sun hours × 30 days = **585 units/month** **Monthly savings:** - Self-consumed: 300 units × ₹8 = ₹2,400 (zero bill) - Export: 285 units × ₹3.14/unit = ₹895 - **Total: ₹3,295/month** **Investment (net): ₹85,000 (after ₹78,000 subsidy from ₹1,63,000 system)** **Payback: 85,000 ÷ 39,540/year = 2.15 years (26 months)** **This is one of the best solar ROI cases in the country.** --- ## Real Example 4: Bangalore Tech Professional (5 kW Hybrid) **Profile:** - Villa in Whitefield - Monthly consumption: 500 units - 3–4 hour power cuts daily (hence hybrid + battery) - Monthly bill: ₹4,500 (BESCOM @ ₹9/unit) **System:** - 5 kW hybrid system + 10 kWh lithium battery - Monthly generation: ~750 units **Monthly savings:** - Self-consumption savings: ₹4,500 (zero bill) - Export: minimal (most captured in battery) - **Monthly savings: ₹4,500** **Investment:** - System cost: ₹5,50,000 (panels + hybrid inverter + battery) - Subsidy on panels only: ~₹50,000 (battery not subsidized) - Net: ₹5,00,000 **Payback:** ₹5,00,000 ÷ ₹54,000/year = **9.3 years** The payback is longer because of battery cost, but you gain reliable backup power during Bangalore's frequent outages — a significant quality-of-life benefit. --- ## How to Calculate Your Own Savings ### Step 1: Find your electricity tariff Look at your bill. Note the per-unit rate in the highest slab you pay. ### Step 2: Determine your monthly consumption From your bill (in kWh or units). ### Step 3: Size your system Recommended kW = Monthly units ÷ (peak sun hours × 30) ### Step 4: Calculate generation Monthly generation = System kW × Peak sun hours × 30 ### Step 5: Calculate savings Monthly savings = Min(consumption, generation) × tariff rate + Export × grid purchase rate ### Step 6: Find net cost Get quotes, subtract PM Surya Ghar subsidy (max ₹78,000 for 3 kW+) ### Step 7: Calculate payback Payback years = Net cost ÷ Annual savings --- ## Things That Can Reduce Your Actual Savings 1. **Shading:** Even 10% shading can reduce output by 20–30% (use microinverters or optimizers if unavoidable) 2. **Panel degradation:** ~0.5% per year — factor in for 25-year projections 3. **Inverter replacement:** One inverter replacement at year 12–15 costs ₹15,000–₹40,000 4. **Cleaning costs:** ₹2,000–₹4,000/year if using professional cleaning service 5. **Panel soiling:** Dirty panels generate 10–15% less — clean regularly --- ## Bottom Line: Is Solar Worth It in India in 2025? **For most urban Indian homeowners with bills over ₹2,000/month: Yes, absolutely.** - Payback in 2–5 years (often faster in high-tariff cities like Mumbai) - 20+ years of near-free electricity after payback - Protection against rising grid tariffs - Increased property value (studies show 3–5% premium) - Environmental benefit (1 kW solar offsets ~1.5 tonnes of CO₂ per year) [Get free quotes from verified solar installers in your city →](https://gosolarindex.in)