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Savings calculator
What your roof could do.
Type in your monthly bill. The estimate uses Rajasthan planning yields and current tariffs, and the audit replaces it with numbers from your actual bills.
Savings calculator
Average across the year.
₹
₹500₹20,000+
Optional. Tells us your DISCOM.
What happens next
- 1
Estimate, now
This page. Indicative in a minute.
- 2
Free bill audit
On WhatsApp, from your actual bills.
- 3
Survey and 3D design
Within 3 working days, then a fixed quote.
3 kW system, about ₹30,975 saved in year one.
Suggested system
System size
3kW
Roof needed
300sq ft
A ₹3,000 bill points to about 3.5 kW; the nearest pack is 3 kW. It covers about 86% of your use, about 4,425 units a year. Less roof than that?
Illustrative generation value
Monthly*
₹2,581
Yearly*
₹30,975
10 years*
₹3.6 lakh
- Subsidy
- ₹78,000
- PM Surya Ghar, paid to your account
- PV-only simple payback illustration
- ≈ 4.4 yrs
*Solar-only illustration: generation valued at the assumed tariff is not actual bill saving. Self-use, export settlement and fixed charges change the result. Batteries, reserve, losses, power limits and replacements need a separate reviewed design.
More than money
Each year, from the same units.
CO₂ avoided
3,630kg
Trees' worth
173
Car km
30,238km
and book a free bill audit.
Solar EMI calculator
The loan, month by month.
The same tool that sits on the financing page, on the bill you typed above: the EMI, what the subsidy does to it, and what you pay each month against the bill today. Every assumption is listed inside the tool.
Start with the loan you need
This entire amount is your loan. No 10% upfront amount is deducted. Maximum ₹6 lakh.
1–120 whole months; e.g. 3 years or 3.5 years.
Blank uses 9%: planning preset 6% up to ₹2 lakh; 9% above ₹2 lakh up to ₹6 lakh, on the entire loan. Enter your bank's offered rate.
These are planning presets, not universal scheme rates.
Use 0 if eligibility is unconfirmed. ₹78,000 is only an illustration for an eligible system.
Assumed timing, not a promised date. 0 means before the first EMI.
Enter your own allowance; include battery purchase in the loan/upfront cost. A reviewed design establishes energy losses, reserve, power limits and replacement needs.
Include fixed charges and any electricity still imported. Enter your estimate; no zero-bill assumption.
Your monthly EMI
Full loan amount: ₹3,00,000
₹9,540
9% · 36 months · Subsidy assumed after 6 EMIs
Financing cost
- EMI before subsidy
- ₹9,540 /month
- EMI after subsidy
- ₹9,540 /month
- Loan finishes in
- 36 months
- Total interest with subsidy repayment
- ₹43,437
- Interest without subsidy repayment
- ₹43,437
- Interest saved
- ₹0
- Total EMI payments from your pocket
- ₹3,43,437
When subsidy reaches the loan
No subsidy is included yet. Enter a subsidy amount above ₹0 to compare Lower EMI and Finish Earlier.
- Original loan
- ₹3,00,000
- Outstanding before subsidy
- ₹2,55,432
- Subsidy applied to principal
- ₹0
- Principal left to repay
- ₹2,55,432
₹2,55,432 − ₹0 = ₹2,55,432. The remaining balance is principal only; future interest is calculated on it.
Payment timeline and advisor checks
- Your first 6 EMI paymentsEach EMI includes interest and principal.
- ₹57,240
- Of those payments: interest
- ₹12,672
- Of those payments: principal repaid
- ₹44,568
- Start with ₹3,00,000 over 36 months at 9% per year.
- Pay 6 EMIs of about ₹9,540 before the assumed subsidy repayment. Interest already paid is not reversed.
- Apply ₹0 once to principal.
- Then 30 payments remain. Regular EMI is about ₹9,540; the last payment in month 36 is about ₹9,540.
- After the loan ends, the expected remaining electricity bill continues. Electricity charges and actual savings can change.
Loan repayment check: your EMI payments ₹3,43,437 + subsidy used ₹0 = original loan ₹3,00,000 + interest ₹43,437. Figures round independently to rupees.
This is loan cash flow, not the full installed-system cost. Upfront contribution, fees, insurance, maintenance and electricity bills are outside the total EMI figure.
Confirm before presenting this as a plan
- Bank's offered rate, tenure, fees and any moratorium.
- Subsidy eligibility, amount, expected timing and how it will reach the loan account. Keep paying the bank's due EMI until credit and the revised schedule are confirmed.
- Whether the bank permits lower EMI or earlier closure after repayment, and how excess subsidy is handled.
- Remaining electricity bill including fixed charges; do not infer it from the loan amount.
Enter today's bill and the expected remaining bill to compare total monthly outgo.
Planning estimate, not a bank offer. Rate held constant; fees, insurance and moratorium excluded. Subsidy eligibility, receipt date and EMI recasting require confirmation. Remaining electricity bill must include fixed charges; actual savings may vary.
How it works
What the calculator assumes.
Must I replace my on-grid system?
No. A working on-grid system remains useful. Consider storage when evening use or backup matters. Compare added cost with your needs.
Will solar work during a cut?
Standard on-grid shuts down with the grid. Backup requires a suitable inverter, compatible charged battery and separate circuits. Hybrid supplies the loads selected in its design.
How long will backup last?
Usable energy, starting charge, reserve and load determine runtime. We estimate for your appliance list. More running appliances reduce available time.
Can it run an AC or pump?
Yes, with a system designed for the load. Check running power, starting demand and simultaneous appliances. Both battery capacity and inverter power matter.
Can I add a battery directly?
Not to every system. Equipment, wiring, metering, approvals and warranties need checks. Some parts may stay; others may change. An upgrade review identifies options.
Will my computer stay on?
Inverter transfer time and the computer’s tolerance need checking. Sensitive equipment may still need a dedicated UPS alongside hybrid solar.
How much battery maintenance?
LFP needs no water topping. Installation, temperature and periodic checks still matter. Life and performance depend on use and manufacturer conditions.
Can hybrid receive subsidy?
Eligible residential grid-connected hybrid may receive assistance based on solar capacity. Battery cost does not increase central assistance. Current rules and approvals apply.
How do meters and exports affect bills?
Your approved tariff sets the rates. Self-use, bill credits and payment for residual surplus are different. We compare using your connection’s rules.
Will I stop needing the grid?
Most hybrids retain it. Long outages, heavy loads and low sunlight can exhaust storage. Full off-grid operation needs a separate design and budget.
Will solar fast-charge my EV?
Solar can provide charging energy. Speed depends on the vehicle, charger and available power. DC alone is not faster; compatible controlled charging equipment is needed.
Can I view readings in the app?
The customer RMS app is not released yet. Call/WhatsApp for available readings and service. Battery readings depend on equipment and connectivity.
From the blog
Explained by the engineers.
Buying a system
Solar loan interest rates in Rajasthan
Compare bank rates, understand subsidy adjustments and explore your monthly payment with Suntask’s solar EMI calculator.
13 October 2026 · 7 min readRead the article
Net metering and DISCOMs
Net metering in Rajasthan: JVVNL, AVVNL, JdVVNL, step by step
Net metering is the agreement that turns your roof into a two-way account with the DISCOM. Here is how the application moves through JVVNL, AVVNL or JdVVNL, what each step needs from you, and where applications stall.
4 September 2026 · 5 min readRead the article
Subsidy and money
Rajasthan's ₹17,000 solar top-up, explained
The central PM Surya Ghar subsidy tops out at ₹78,000. Rajasthan adds up to ₹17,000 for families under its free-electricity scheme, taking the total to ₹95,000. This is the explainer for that extra amount: eligibility by connection, the payment route, and the maths for the small plant it was designed around.
4 September 2026 · 4 min readRead the article