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IARROT Green Energy · 2026 Solar Planning Tool
Solar Savings Calculator
Enter your monthly bill, monthly electricity units or roof area. The calculator estimates a practical solar size, generation, saving potential, cost benchmark and applicable government support.
1 STEP ONE
What do you want to calculate from?
₹/ month
2 STEP TWO
State / UT and Customer Category
Select the State/UT and category. The calculator will then show the relevant electricity-price reference and support treatment.
3 STEP THREE
Electricity Unit Cost
Solar System
Selected: On-Grid. This is the main bill-saving calculation. Grid-connected residential subsidy rules can apply where eligible.
—
Select State/UT and category first.
AUTO · 2026
Electricity Price Sensitivity Scale
100% · Standard
Applied electricity rate—
₹1 / kWhReference₹30 / kWh
Set the electricity price used by the calculation. The slider is connected directly to the applied ₹/kWh and can be adjusted up to ₹30/kWh.
Simple explanation: your actual bill can differ because electricity bills use slabs, fixed charges, taxes, rebates and DISCOM rules. This calculator uses a transparent 2026 reference rate for planning.
CALCULATION COMPLETE
Your Solar Savings Report
Instant estimate generated from your selected State/UT, category, input and system. No personal data is required to view or download the report.
Practical Recommended Solar Capacity
0.0 kWp
—
0kWh / month
0kWh / year
₹0.00applied tariff
0kWh/kWp/year
Electricity Generation
0kWh / day
0kWh / month
0kWh / year
25-year generation model uses 0.5% annual degradation.
Financial Savings
₹0Monthly bill saving
₹0Annual bill saving
₹025-year simple value
Savings are linked to the selected consumption and tariff reference.
System Cost & Government Support
On-grid benchmark—
Central CFA₹0
State / UT support₹0
Selected system benchmark—
Indicative planning benchmark, not an IARROT quotation. Subsidy is shown only where the verified rule supports it.
Project Economics
Simple payback—
Simple annual ROI—
Roof area required—
Consumption offset—
On-Grid / Off-Grid / Hybrid — System Fit
| System | Indicative 2026 range | Support | Backup | Calculation role | Fit |
|---|---|---|---|---|---|
| On-Grid | — | — | No during grid outage | Direct bill-offset model | Primary saving model |
| Off-Grid | Site-specific quote required | PM-Surya Ghar CFA not assumed | Yes, with battery | Generation / energy-value model | Backup-focused |
| Hybrid | Site-specific quote required | Eligibility depends on final configuration | Yes, with battery | Generation / energy-value model | Backup + grid |
Battery size is not invented because backup-hours and critical-load inputs are intentionally not part of this calculator.
Environmental Impact
0 tCO₂ planning estimate / 25 years
0tree-equivalent planning conversion
0kWh modelled / 25 years
Environmental figures are planning estimates, not certified carbon accounting.
Calculation Basis
Input method—
State / UT—
Customer category—
Solar systemOn-Grid Solar
Monthly consumption used—
Input value used—
Tariff reference—
Price sensitivity100% · Standard
Solar resource—
Sizing rule—
✓
Congratulations — your free site-survey request is ready.
Enter your details to request the survey. The report remains available without submitting this form.
Important: This is an indicative feasibility calculation, not a sanctioned engineering design, bill guarantee, subsidy sanction or commercial quotation. Solar generation varies with irradiation, orientation, tilt, shading, equipment and losses. CEA effective rates are reference values, not the exact consumer bill. Cost figures shown are indicative planning benchmarks, not vendor quotations. Central CFA and any state support are subject to eligibility, scheme rules and verification; final price, system design, metering, subsidy and battery sizing must be verified by IARROT from the customer's bill and site.
Solar Enquiry
Residential • Commercial