Home›Calculators›Ecology›Wind Turbine Profit Calculator

Wind Turbine Profit Calculator

Ecology

Calculate wind turbine investment profitability, annual revenue, payback period, and 20-year ROI. Enter turbine capacity, installation cost, energy output, and electricity rate.

15,000
$130$2,500
1,00010,000,000
$0.01$0.25
$0$125,000

Annual Revenue ($)

$20,000
Payback Period (years)
5.2
20-Year ROI (%)
287.4

This calculator computes your Annual Revenue ($), Payback Period (years), 20-Year ROI (%) from the values you enter.

Inputs
Turbine Capacity (kW)Installation Cost per kW ($)Annual Energy Output (kWh)Electricity Rate ($/unit)Annual Maintenance Cost ($)
Outputs
Annual Revenue ($)Payback Period (years)20-Year ROI (%)

What is a Wind Profit?

A Wind Turbine Profit Calculator is a financial tool that estimates the annual revenue, payback period, and 20-year return on investment (ROI) for a wind energy project based on four key inputs: turbine capacity, installation cost, annual energy output, and the electricity rate at which power is sold or offset. For anyone evaluating a wind energy investment in India — from a small industrial captive consumer to a project developer — understanding the profit potential upfront is essential before committing capital. This calculator translates the technical specifications of your wind turbine into the financial metrics that lenders, promoters, and procurement teams actually use.

Wind power is one of the most cost-competitive renewable energy sources in India today. States like Tamil Nadu, Gujarat, Rajasthan, Andhra Pradesh, and Karnataka host the majority of India's installed wind capacity, with tariffs under competitive auctions falling to ₹2.50–₹3.50 per unit. At the same time, commercial and industrial consumers across the country are exploring captive wind projects to reduce dependence on costly grid power, which can exceed ₹9–₹10 per unit in some states.

If you are also evaluating solar alongside wind, the Solar Panel Calculator offers a comparable financial model for photovoltaic projects.

How to use this Wind Profit calculator

  1. Enter Turbine Capacity (kW): Use the slider or type directly into the field. For a single commercial turbine, this is the nameplate capacity from the manufacturer's datasheet — for example, 100 kW or 500 kW. For a wind farm, enter the aggregate nameplate capacity across all turbines.

  2. Enter Installation Cost per kW (₹): Set this to the all-inclusive cost per kW for your project — covering the turbine supply, tower, foundation, civil work, electrical infrastructure, and grid connectivity charges. Current benchmark figures in India range from ₹65,000 to ₹90,000 per kW for utility-scale projects. Adjust upward for remote or difficult terrain.

  3. Enter Annual Energy Output (kWh): Enter the projected annual generation from the turbine or farm. Your turbine manufacturer will provide a P50 energy estimate based on the site's wind resource data. As a first approximation, multiply Turbine Capacity (kW) × 8,760 hours × expected capacity factor (0.25 to 0.35 for Indian sites).

  4. Enter Electricity Rate (₹/unit): For captive projects offsetting grid purchases, enter your current grid tariff. For PPA or Feed-in Tariff projects, enter the contracted rate. For projects participating in the merchant market, use a conservative estimate of prevailing market clearing prices.

  5. Enter Annual Maintenance Cost (₹): Enter the total annual O&M budget including any comprehensive maintenance contract with the turbine OEM, scheduled servicing, insurance, and land lease if applicable. A typical starting estimate is ₹8,000–₹12,000 per kW per year for well-maintained utility-scale turbines.

Once all fields are filled, the calculator instantly displays Annual Revenue, Payback Period, and 20-Year ROI. Try adjusting the electricity rate by ₹1–₹2 in either direction to see how sensitive your payback is to tariff risk.

Formula & Methodology

The calculator uses straightforward financial arithmetic based on annual cash flows and simple payback.

Step 1 — Total Capital Cost

> Total Cost (₹) = Turbine Capacity (kW) × Installation Cost per kW (₹/kW)

Step 2 — Annual Revenue

> Annual Revenue (₹) = Annual Energy Output (kWh) × Electricity Rate (₹/kWh)

Step 3 — Net Annual Income

> Net Annual Income (₹) = Annual Revenue − Annual Maintenance Cost

Step 4 — Payback Period

> Payback (years) = Total Capital Cost ÷ Net Annual Income

Step 5 — 20-Year ROI

> ROI₂₀ (%) = [(Net Annual Income × 20 − Total Capital Cost) ÷ Total Capital Cost] × 100

Worked example:

Suppose you are evaluating a 100 kW wind turbine in Rajasthan with the following inputs:

- Turbine Capacity: 100 kW
- Installation Cost per kW: ₹80,000
- Annual Energy Output: 2,00,000 kWh (capacity factor ≈ 22.8%)
- Electricity Rate: ₹8.00 per unit (captive industrial consumer)
- Annual Maintenance Cost: ₹50,000

> Total Capital Cost = 100 × ₹80,000 = ₹80,00,000
>
> Annual Revenue = 2,00,000 × ₹8.00 = ₹16,00,000
>
> Net Annual Income = ₹16,00,000 − ₹50,000 = ₹15,50,000
>
> Payback = ₹80,00,000 ÷ ₹15,50,000 = 5.16 years
>
> ROI₂₀ = [(₹15,50,000 × 20 − ₹80,00,000) ÷ ₹80,00,000] × 100 = 287.5%

This example illustrates why captive wind is attractive for industrial consumers in high-tariff states: an 8 per unit grid tariff yields a payback of just over 5 years and a 20-year return of nearly 3× the initial investment. In contrast, at a PPA rate of ₹3 per unit (annual revenue ₹6,00,000, net income ₹5,50,000), payback extends to approximately 14.5 years and 20-year ROI falls to 37.5% — acceptable for a project developer with a long horizon but less compelling for a short-term industrial investor.

Key assumptions and limitations: The calculator assumes constant annual energy output and electricity rate over 20 years. It does not model turbine degradation (typically 0.5–1.5% per annum), financing costs, tax liabilities, inflation, or REC income. It also excludes one-time costs such as decommissioning or major component replacement (gearbox, blades) that may arise in the 15–20 year window.

Frequently Asked Questions

For small commercial and industrial wind turbines in India, payback periods typically range from 6 to 12 years depending on the site's wind resource, the electricity tariff negotiated under a Power Purchase Agreement, and the installed cost per kW. Projects in high-wind states like Tamil Nadu, Rajasthan, and Gujarat tend to achieve shorter payback periods. Using the Wind Turbine Profit Calculator with site-specific data gives you a tailored estimate rather than a broad industry average.
For captive or open-access projects where you offset grid purchases, enter the prevailing commercial or industrial tariff for your DISCOM, which typically ranges from ₹6 to ₹10 per unit across states. For projects selling power under a PPA or Feed-in Tariff, use the agreed tariff rate — wind PPAs in India are currently signed in the range of ₹2.50 to ₹3.50 per unit. If you are banking surplus energy with your DISCOM, use the applicable banking rate.
The 20-year ROI is calculated as ((Net Annual Income × 20) − Total Capital Cost) ÷ Total Capital Cost × 100. Net Annual Income is the annual revenue from energy generation minus the annual maintenance cost. This gives you the total return on the initial capital investment over a 20-year project life, expressed as a percentage. It does not account for inflation, financing costs, or degradation in turbine output over time.
Utility-scale onshore wind turbines in India currently cost approximately ₹65,000 to ₹90,000 per kW installed, including the turbine, tower, foundation, grid connection, and balance-of-plant. Small commercial turbines below 100 kW tend to be more expensive on a per-kW basis, often ₹1,00,000 to ₹1,50,000 per kW. These figures vary significantly based on the site, turbine model, and civil work requirements.
Annual Energy Output (kWh) is the total electricity your turbine is expected to generate over a year, accounting for the site's wind resource and the turbine's capacity factor. A rough starting point is to multiply turbine capacity (kW) by 8,760 hours and then by the expected capacity factor — typically 25–35% for good Indian wind sites. For a 100 kW turbine at a 25% capacity factor, that is approximately 2,19,000 kWh per year. Your turbine manufacturer or a wind resource assessment report will provide a more accurate figure.
The calculator computes the pre-incentive financial picture based on revenue and costs you enter. Government incentives such as Accelerated Depreciation (AD) under the Income Tax Act — which allows up to 40% depreciation in the first year — and generation-based incentives can significantly improve actual after-tax returns. You can factor these in by adjusting the effective installation cost input to reflect your net capital outlay after the tax benefit.
Wind and solar projects are broadly comparable in cost and returns at utility scale in India, though solar has fallen faster in cost per kW. Wind has a structural advantage in states with strong wind regimes because it generates more predictably during night hours and non-summer months when solar output is low. The [Solar Panel Calculator](/solar-panel-calculator/) lets you run a parallel estimate for a solar project on the same site so you can compare payback periods directly.
Annual operation and maintenance (O&M) costs for wind turbines in India typically run between ₹8,000 and ₹15,000 per installed kW per year for utility-scale projects under a comprehensive maintenance contract. For a 100 kW turbine this translates to approximately ₹8 lakh to ₹15 lakh per year. Costs include scheduled servicing, lubrication, blade inspection, and grid synchronisation equipment. Smaller turbines tend to have higher per-kW O&M costs.
Yes. Enter the combined capacity (kW) of all turbines in the Turbine Capacity field, aggregate annual energy output across the farm in the Annual Energy Output field, and aggregate annual maintenance costs across all turbines. The calculator will return the farm-level annual revenue, payback period, and 20-year ROI. For a more detailed power output estimate by turbine model, use the [Wind Turbine Calculator](/wind-turbine-calculator/) first.
RPO is a mandate that requires electricity distribution companies (DISCOMs) and large consumers to source a specified percentage of their energy from renewable sources. Entities that cannot meet their RPO can buy Renewable Energy Certificates (RECs), while those with surplus renewable generation can sell RECs for additional revenue. Wind projects generating RECs can earn ₹1,000 to ₹3,000 per REC (1 REC = 1 MWh), which improves project economics beyond the tariff revenue alone.
Wind and small hydro projects differ substantially in site requirements, civil costs, and generation profiles. Hydro projects have very high upfront civil costs but near-zero fuel cost and very long asset lives. Use the [Hydroelectric Power Calculator](/hydroelectric-power-calculator/) to model a hydro scenario and compare the payback years and 20-year ROI side-by-side with this wind turbine estimate.
This calculator uses simple (undiscounted) payback: Total Capital Cost divided by Net Annual Income. It does not apply a discount rate to future cash flows. Simple payback is the most widely used screening metric for renewable energy projects in India because it is intuitive and requires no assumption about the cost of capital. For a full discounted cash flow analysis with NPV and IRR, you would need a project finance model that accounts for debt service, working capital, and tax.
Also known as
wind turbine ROI calculatorwind energy investment calculatorwind turbine payback periodwind farm profitability calculatorwind power financial calculator