Calculate the full financial case for a wind power project — annual generation, payback period, annual ROI, and 20-year net profit. Works for captive, group captive, or grid-connected wind projects.
How to Calculate ROI for a Wind Power Project
Wind ROI depends heavily on the capacity utilization factor (CUF) — the percentage of a turbine's maximum possible output it actually generates over a year, based on site wind speed. A higher CUF means more units generated per kW installed, and a shorter payback.
Annual Generation (units) = Capacity (kW) × CUF% × 8,760 hours
Annual Revenue = Annual Generation × Tariff Rate
Annual Net Revenue = Annual Revenue − Annual O&M Cost
Annual ROI = (Annual Net Revenue / Total Investment) × 100
Payback Period = Total Investment / Annual Net Revenue
Worked example: A 2,000 kW (2 MW) wind project at ₹6 crore/MW costs ₹12 crore. At a 27% CUF, it generates 2,000 × 0.27 × 8,760 = 47,30,400 units/year. At a ₹3.2/unit tariff, that's ₹1.51 crore annual revenue. After ₹18 lakh O&M (1.5% of capex), net revenue is ₹1.33 crore — a payback of roughly 9 years and 11% annual ROI, improving further with tariff escalation and any group captive discount.
Wind Power ROI FAQs
Annual Generation (units) = Capacity (kW) × CUF% × 8,760 hours. Annual Revenue = Annual Generation × Tariff Rate, minus annual O&M cost. Annual ROI = Annual Net Revenue ÷ Total Investment × 100. See the worked example above, or enter your own numbers in the calculator.
Utility-scale wind projects in India typically deliver 15–22% annual ROI with a 6–9 year payback period, assuming a 20–30% capacity utilization factor in strong wind zones like Tamil Nadu, Gujarat, and Rajasthan. Group captive structures that avoid cross-subsidy surcharge can push effective returns higher.
A CUF of 25% or higher is considered strong for onshore wind in India. Sites in Tamil Nadu's Tirunelveli/Kanyakumari belt and Gujarat's Kutch region regularly achieve 28–32% CUF. Below 18–20% CUF, wind projects struggle to justify the capex versus solar or grid power — always get a site-specific wind resource assessment before investing.
Building your own turbine needs MW-scale capital (₹5.5–7 crore/MW) and land with a proven wind resource — realistic mainly for large industrial consumers. Most SMEs instead buy a minority equity stake (≥26%) in an existing developer's wind farm under the group captive scheme, getting the tariff benefit without construction risk. Use our Group Captive Savings Calculator to compare.
🌬️ Wind Power ROI Calculator
Project Details
Typical: ₹55,000–70,000/kW for utility-scale wind
Typical: 20–30% depending on site wind zone
Revenue Details
Wind PPAs often have lower escalation than retail tariffs