ROI Simulator

Solar & Wind ROI Calculator:
10-Year Cash Flow Simulator for Indian Industry

Model cash flows, tax depreciation benefits, IRR, NPV, and payback periods across four renewable energy models — adjust inputs in real time.

Illustrative model using industry-standard assumptions. Actual outcomes depend on site conditions, state regulations, and financing structure. Use as a directional guide only.

Simulation Inputs

₹5.0L

Your current KSEB/BESCOM bill

500 kW

Solar or captive allocation (kW)

11 ₹/unit

All-inclusive per-unit cost

9% /yr

Expected annual tariff increase

25%

Used for depreciation tax benefit

12%

Cost of capital for NPV calculation

Model Assumptions

· Install cost: ₹52,000/kW · CUF: 20% · O&M: ₹2,000/kW/yr (3% escalation)

· Accelerated depreciation: 40% in Y1 (WDV method)

Active Model
Rooftop Solar (CAPEX)
You own the plant. Maximum long-term ROI with accelerated depreciation benefit.
Payback
4yr
Total Investment
₹2.6 Cr
Payback Period
4 Years
10-yr NPV
₹58.8 L
IRR
15%
10-yr Gross Savings
₹10.0 Cr
Depreciation Benefit
₹61.1 L

Annual Cash Flow Breakdown (₹)

Y1Y2Y3Y4Y5Y6Y7Y8Y9Y10-60.0L0K60.0L1.2Cr1.8Cr
  • Grid Savings
  • O&M Cost
  • Dep. Benefit

Cumulative Cash Flow — Payback Visualised

Line crosses zero = payback achieved

Y1Y2Y3Y4Y5Y6Y7Y8Y9Y10-3.0Cr0K3.0Cr6.0Cr9.0CrBreakeven
Carbon Impact

10-year environmental & carbon credit impact for your 500 kW plant

Renovar Energy · Carbon Impact Report

7,183
tonnes of CO₂ avoided over 10 years
876,000 kWh generated/yr · 718.3 tCO₂ avoided/yr
32,996
trees planted
equivalent / yr
342
cars removed
from road / yr
Carbon Credit Revenue
I-REC / VCS @ ₹225/tCO₂ · 10-yr estimate
₹16.2L
≈ ₹1.6L/yr

Grid EF: 0.82 kgCO₂/kWh (CEA 2023). Carbon credit: ₹200–₹250/tCO₂ midpoint. Illustrative — actual values vary by registry, vintage and project type.

Carbon credits can be registered under VCS/Gold Standard or I-REC and sold to corporates for their ESG/net-zero commitments. Speak to our team about carbon monetisation alongside your energy savings.
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