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Wind Turbine Profit Calculator
Calculate annual energy production, revenue, payback period, NPV, IRR and LCOE for any wind turbine or farm. Use regional presets from NREL's 2024 Annual Technology Baseline or enter custom values. Physics-based power estimate from wind speed and rotor diameter. Year-by-year cashflow table included.
How to Use the Wind Turbine Profit Calculator
Select a regional preset to populate all inputs with benchmark values from NREL's 2024 Annual Technology Baseline. Furthermore, you can adjust any field to model your specific project. Additionally, all results update automatically with every keystroke.
- Choose a preset or enter custom valuesClick one of the five regional presets — US Onshore, US Offshore, UK Offshore, EU Onshore or Australia. Furthermore, each preset sets realistic installed costs, O&M costs, capacity factor and electricity price for that market. Additionally, select Custom to enter your own figures from scratch.
- Enter turbine specificationsEnter the rated power in kilowatts and the number of turbines. Furthermore, if you know the average wind speed and rotor diameter, enter those fields. Additionally, the calculator uses the Betz wind power equation to estimate an expected capacity factor and shows the estimated power output.
- Set financial parametersEnter installed cost per kilowatt, annual O&M cost, electricity sale price, price escalation rate, discount rate and project lifespan. Furthermore, enter any investment tax credit percentage. Additionally, the US Inflation Reduction Act provides a 30% ITC for qualifying wind projects through 2032.
- Read the resultsThe right panel shows annual energy production, year-one revenue, NPV, IRR, LCOE, simple payback, total lifetime profit and annual CO₂ offset. Furthermore, a payback progress bar shows visually where the breakeven point sits within the project life. Additionally, a disclaimer reminds users to conduct a professional wind resource assessment before committing capital.
- Review the Cashflow TableSwitch to the Cashflow Table tab for a year-by-year breakdown of revenue, O&M costs, net cashflow and cumulative position. Furthermore, the breakeven year is highlighted in green. Additionally, an SVG chart shows the cumulative cashflow curve crossing from negative to positive.
Wind Turbine Power — The Physics Formula
Wind power is calculated using the kinetic energy equation applied to a moving air mass. Furthermore, the power available in wind increases with the cube of wind speed, making site wind speed the single most important variable in profitability analysis.
Albert Betz showed in 1920 that the theoretical maximum power coefficient is 16/27 ≈ 0.593, now called the Betz limit. Furthermore, extracting all kinetic energy would halt airflow, preventing fresh wind from entering. Additionally, modern turbines typically achieve Cp values of 0.35 to 0.45 — around 75% of the theoretical maximum.
Annual Energy Production and Capacity Factor
Annual Energy Production (AEP) is the total electrical energy a turbine generates in one year. Furthermore, it is calculated by multiplying the rated power by 8,760 hours per year and the capacity factor. Additionally, the capacity factor accounts for wind variability, maintenance downtime, turbine start and stop losses, and wake effects in multi-turbine farms.
Capacity factors vary significantly by location and technology. Furthermore, US onshore wind sites average 29–43% depending on wind class, according to NREL's 2024 Annual Technology Baseline. Additionally, US offshore sites average 44–57%, reflecting the stronger and more consistent winds over open water.
Onshore capacity factors
Typical range: 25–45%. Furthermore, excellent onshore sites with average speeds above 8 m/s can reach 45–50%. Additionally, NREL Wind Classes 4–7 (6.5–9.0+ m/s) represent the most economically viable US onshore resources. Class 3 sites (6.0–6.5 m/s) are borderline economical at current costs.
Offshore capacity factors
Typical range: 40–57%. Furthermore, the UK North Sea achieves some of the highest capacity factors globally — Hornsea Two averaged 57.5% in 2022. Additionally, US Atlantic offshore projects target 45–52%. Higher capacity factors reduce the LCOE significantly and improve project economics.
Wind Turbine Installation and Operating Costs
Installation costs vary widely by technology, location and market. Furthermore, according to NREL's 2024 Annual Technology Baseline, US onshore wind costs range from $1,100 to $1,600 per kilowatt of rated capacity. Additionally, offshore installation is significantly more expensive at $2,800 to $3,600 per kilowatt, reflecting the complexity of marine foundations and subsea cabling.
| Technology | Installed Cost ($/kW) | O&M ($/kW/yr) | Capacity Factor | LCOE ($/MWh) |
|---|---|---|---|---|
| US Onshore | $1,100–1,600 | $40–50 | 29–43% | $23–39 |
| EU Onshore | $1,300–1,700 | $45–55 | 27–38% | $28–45 |
| US Offshore | $2,800–3,600 | $85–100 | 44–52% | $70–100 |
| UK Offshore | $3,200–3,800 | $90–110 | 46–57% | $65–95 |
| Australia | $1,500–1,900 | $45–55 | 33–44% | $30–50 |
Operations and maintenance costs cover regular inspections, blade cleaning, gearbox oil changes, electrical maintenance and unplanned repairs. Furthermore, O&M costs for onshore wind average $40 to $50 per kW per year. Additionally, offshore O&M is two to three times higher due to vessel access costs and marine environment requirements.
Payback Period, NPV and IRR Explained
Three financial metrics dominate wind project evaluation. Furthermore, each measures a different aspect of value and risk. Additionally, professional analysts use all three together, not in isolation.
Simple Payback Period
The years required for cumulative net revenue to recover the initial investment. Furthermore, it does not account for the time value of money. Additionally, it is calculated as Total Installed Cost divided by Annual Net Revenue. Typical onshore wind payback periods range from 5 to 10 years at NREL benchmark values.
Net Present Value (NPV)
The sum of all future cashflows discounted to today's value, minus the initial investment. Furthermore, a positive NPV means the project creates value above the required return. Additionally, the formula is NPV = −C₀ + Σ(CF_t / (1+r)^t). A higher discount rate reduces NPV by weighting future cashflows lower.
Internal Rate of Return (IRR)
The discount rate at which NPV equals zero. Furthermore, it represents the annualised return on investment over the project life. Additionally, an IRR above the discount rate confirms the project is value-creating. Typical utility-scale wind projects target IRR above 8–12%. This calculator solves IRR iteratively using bisection.
LCOE — Levelised Cost of Energy
LCOE is the average cost to produce one megawatt-hour of electricity over the project's entire lifetime, including all capital and operating expenditure. Furthermore, it allows direct comparison between different energy technologies on a per-MWh basis. Additionally, a project is profitable when its LCOE falls below the electricity sale price.
NREL's 2024 ATB gives US onshore wind LCOE of $23 to $39 per MWh. Furthermore, US offshore wind ranges from $70 to $100 per MWh. Additionally, the rapid decline in turbine costs over the last decade has made onshore wind one of the cheapest electricity sources globally — cheaper than new gas or coal in most markets.
CO₂ Offset and Environmental Value
Every kilowatt-hour generated by wind displaces electricity that would otherwise come from the grid, avoiding the associated emissions. Furthermore, the CO₂ offset depends on the grid emission factor — the average emissions intensity of the electricity system in the region. Additionally, using a lower-carbon grid reduces the offset value, while a coal-heavy grid increases it significantly.
The US EPA eGRID 2022 database gives a national average emission factor of 0.386 kg CO₂ equivalent per kWh. Furthermore, regional factors vary from 0.18 kg/kWh in hydro-heavy Pacific Northwest to 0.55 kg/kWh in coal-intensive Midwest regions. Additionally, the UK national average fell to 0.193 kg/kWh in 2023, reflecting high renewable penetration. The EU average was 0.233 kg/kWh in 2022 according to the IEA.
Government Incentives and Tax Credits
Incentives significantly improve wind project economics. Furthermore, the US Inflation Reduction Act (2022) provides a 30% Investment Tax Credit (ITC) or a Production Tax Credit (PTC) of approximately $15–26 per MWh for new wind projects. Additionally, bonus adders of 10% each apply for domestic content and energy community siting, potentially raising the total credit to 50%.
US incentives
The ITC applies a percentage discount to the installed cost — enter this in the Tax Credit field above. Furthermore, the PTC provides a per-kWh payment over 10 years. Additionally, many states add their own Renewable Portfolio Standard (RPS) credits or rebates. The 30% ITC alone reduces payback by 3 to 5 years for typical onshore projects.
International incentives
The UK uses Contracts for Difference (CfD) — guaranteed strike prices that de-risk revenue. Furthermore, the EU provides state aid through national renewable auctions. Additionally, Australia has the Renewable Energy Target (RET) which issues Large-scale Generation Certificates (LGCs) worth approximately AUD 25–35 per MWh. Check your national energy regulator for current rates.
Onshore vs Offshore Wind Economics
Onshore and offshore wind follow very different economic profiles. Furthermore, onshore is cheaper to install but has lower capacity factors. Additionally, offshore is more expensive but delivers significantly more energy per unit of rated capacity, often making it cost-competitive despite the higher capital cost.
Offshore wind benefits from stronger, steadier winds at sea, reducing intermittency. Furthermore, wake losses — the reduction in wind energy available to downstream turbines — are lower offshore because turbines can be spaced further apart. Additionally, offshore projects are typically larger scale, achieving economies of scale in installation and maintenance that reduce per-kW costs.
References and Data Sources
The regional presets, benchmark costs and emission factors in this calculator come from the following authoritative sources. Furthermore, all links lead to live, publicly available data. Additionally, users building detailed financial models should consult the full datasets rather than relying on the simplified benchmarks used here.
Frequently Asked Questions
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