How Much Can You
Save with Solar?
Real numbers. Zero guesswork. Discover exactly how much solar panels can slash your electricity bill — with a live savings calculator and India-specific data for 2026.
on a 3kW system
over 25 years
period in India
The Real Answer: How Much Can Solar Save You?
The answer depends on four things: your current monthly electricity bill, your state's electricity tariff, the size of your solar system, and whether you use net metering. But here's the short answer for most Indian households in 2026:
A correctly-sized rooftop solar system in India can cut your electricity bill by 70%–100%. For a home spending ₹3,000–₹5,000/month on electricity, solar saves ₹25,000–₹48,000 per year. Over 25 years — accounting for annual tariff increases of 7–10% — total savings can reach ₹12–₹20 lakhs.
Solar Savings Calculator — India 2026
Use this free solar savings calculator to estimate your personal savings. Enter your monthly bill and location for an instant result.
Instant estimates based on your electricity usage and location in India
Solar Savings by System Size — India 2026
The bigger your solar system, the more you save — but you only need a system large enough to match your consumption. Here's a detailed solar savings breakdown by system size at an average tariff of ₹8.5/unit:
| System Size | Units/Month | Monthly Savings | Annual Savings | System Cost* | Payback | 25-Yr Savings |
|---|---|---|---|---|---|---|
| 1 kW | 100–120 | ₹850–₹1,020 | ₹10,200–₹12,240 | ₹45,000–₹60,000 | 4–5 yrs | ₹4–₹5.5L |
| 2 kW | 200–240 | ₹1,700–₹2,040 | ₹20,400–₹24,480 | ₹80,000–₹1.10L | 4–5 yrs | ₹8–₹11L |
| 3 kW ⭐ | 300–360 | ₹2,550–₹3,060 | ₹30,600–₹36,720 | ₹1.20L–₹1.50L | 3.5–4.5 yrs | ₹12–₹16.5L |
| 5 kW | 500–600 | ₹4,250–₹5,100 | ₹51,000–₹61,200 | ₹2.25L–₹2.85L | 4–5 yrs | ₹20–₹27.5L |
| 7 kW | 700–840 | ₹5,950–₹7,140 | ₹71,400–₹85,680 | ₹3.50L–₹4.30L | 4–5 yrs | ₹28–₹38L |
| 10 kW | 1000–1200 | ₹8,500–₹10,200 | ₹1.02L–₹1.22L | ₹5.0L–₹6.0L | 4.5–5.5 yrs | ₹40–₹55L |
*Net cost after PM Surya Ghar central subsidy. 25-year savings include 8% annual tariff escalation.
How Solar Savings Work — Step by Step
Understanding how solar panels save you money helps you make a smarter investment decision. There are three ways solar reduces your electricity costs:
Direct Self-Consumption — Biggest Savings
Solar panels generate electricity during daytime (6 AM–6 PM). Every unit your home or business consumes from solar instead of the grid is a unit you don't pay for. At ₹8–₹10/unit, this is your primary source of savings. A 3kW system generates 12–14 units per day in most Indian cities.
Net Metering — Export Surplus & Get Credits
When your solar system generates more electricity than you consume (e.g., midday when everyone is at work), the surplus is exported to the grid. Your DISCOM credits you for these units, which you can use at night or on cloudy days. This can reduce or eliminate your monthly bill entirely.
Protection Against Rising Tariffs — Long-term Hedge
Electricity tariffs in India rise 7–10% every year. Solar locks in your energy cost at near-zero for 25 years. A ₹3,000/month electricity bill today becomes ₹19,000/month in 25 years without solar — but stays near zero with it. This tariff hedge is where the real long-term savings are.
PM Surya Ghar Subsidy — Instant Savings on Day One
The central government offers ₹30,000–₹94,500 direct subsidy under PM Surya Ghar Muft Bijli Yojana. This is credited directly to your bank account after installation, reducing your upfront investment and improving your payback period by 1–1.5 years.
How Government Subsidy Boosts Your Savings
The PM Surya Ghar Muft Bijli Yojana subsidy is a game-changer for solar savings in India. It directly reduces the upfront cost and shortens the payback period significantly. Here's the before-and-after for a 3kW system:
| Scenario | System Cost | Payback Period | 10-Year Savings | 25-Year Savings |
|---|---|---|---|---|
| Without Subsidy | ₹2,00,000–₹2,30,000 | 5.5–7 yrs | ₹3.5–₹4.5L | ₹11–₹14L |
| With PM Surya Ghar Subsidy ✓ | ₹1,22,000–₹1,52,000 | 3.5–4.5 yrs | ₹5–₹6.5L | ₹13–₹17L |
| With Central + State Subsidy | ₹1,00,000–₹1,35,000 | 3–4 yrs | ₹5.5–₹7L | ₹14–₹19L |
The PM Surya Ghar subsidy effectively reduces your payback period by 1.5–2 years and boosts your net 25-year savings by ₹1.5–₹3 lakhs compared to installing without subsidy. Always apply before installation — the subsidy cannot be claimed after installation without prior registration.
Solar Savings by State — India 2026
Solar savings vary significantly by state due to differences in electricity tariffs, solar irradiance, and state-level subsidies. High-tariff states like Karnataka, West Bengal, and Andhra Pradesh offer the best solar ROI in India:
| State | Tariff (₹/unit) | Monthly Savings (3kW) | Annual Savings | Payback (3kW) | Solar Rating |
|---|---|---|---|---|---|
| Karnataka | ₹9.0 | ₹2,700–₹3,240 | ₹32,400–₹38,880 | 3.5–4 yrs | ⭐⭐⭐⭐⭐ |
| West Bengal | ₹9.5 | ₹2,850–₹3,420 | ₹34,200–₹41,040 | 3–4 yrs | ⭐⭐⭐⭐⭐ |
| Andhra Pradesh | ₹9.0 | ₹2,700–₹3,240 | ₹32,400–₹38,880 | 3.5–4 yrs | ⭐⭐⭐⭐⭐ |
| Maharashtra | ₹8.5 | ₹2,550–₹3,060 | ₹30,600–₹36,720 | 4–5 yrs | ⭐⭐⭐⭐☆ |
| Tamil Nadu | ₹8.2 | ₹2,460–₹2,952 | ₹29,520–₹35,424 | 4–5 yrs | ⭐⭐⭐⭐☆ |
| Delhi | ₹8.0 | ₹2,400–₹2,880 | ₹28,800–₹34,560 | 4–5 yrs | ⭐⭐⭐⭐☆ |
| Rajasthan | ₹7.8 | ₹2,340–₹2,808 | ₹28,080–₹33,696 | 4–5 yrs | ⭐⭐⭐⭐☆ |
| Gujarat | ₹7.5 | ₹2,250–₹2,700 | ₹27,000–₹32,400 | 4.5–5.5 yrs | ⭐⭐⭐☆☆ |
Solar vs Grid Power — True Cost Comparison
To truly understand how much solar saves, compare the lifetime cost of grid electricity vs solar-generated electricity:
- ✓ Cost per unit: ₹0.8–₹1.2 (amortised)
- ✓ Zero fuel cost — sunlight is free
- ✓ Fixed cost — no annual increases
- ✓ Net metering credits for exports
- ✓ Govt. subsidy reduces upfront cost
- ✓ Zero carbon emissions
- ✓ 25-year panel performance warranty
- ✗ Cost per unit: ₹8–₹10 today
- ✗ Rises 7–10% every year
- ✗ ₹40/unit projected by 2045
- ✗ No control over pricing
- ✗ Subject to power cuts & outages
- ✗ High carbon footprint
- ✗ No asset creation
Real-World Solar Savings Examples — India 2026
Case Study 1: Mumbai Family (3kW System)
Profile: 3BHK apartment in Andheri, Mumbai. Monthly electricity consumption: 340 units. Pre-solar bill: ₹3,200/month at ₹9.4/unit (slab rate).
After 3kW Solar Installation: System generates 320 units/month. Net metering export: 40 units/month. Post-solar bill: ₹380/month (just fixed charges). Monthly savings: ₹2,820. Annual savings: ₹33,840. System cost after subsidy: ₹1,35,000. Payback: 4.0 years. 25-year savings: ₹16.2 lakhs.
This family's electricity bill dropped from ₹3,200/month to just ₹380/month (fixed charges only) — an 88% reduction. The payback of 4 years means they'll enjoy 21 years of near-free electricity after breaking even.
Case Study 2: Jaipur Business (10kW System)
Profile: Small manufacturing unit in Jaipur. Monthly consumption: 1,100 units. Pre-solar bill: ₹9,350/month at ₹8.5/unit (commercial tariff).
After 10kW Solar Installation: System generates 1,150 units/month. Bill drops to near zero with slight monthly credits. Monthly savings: ₹9,100+. Annual savings: ₹1,09,200. System cost: ₹5,20,000 (no residential subsidy). Payback: 4.8 years. 10-year savings: ₹10.2 lakhs.
Frequently Asked Questions
The most searched questions about solar savings in India, answered by our experts:
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