Pvwatts Calculator
Estimate the energy production and cost savings of a grid-connected photovoltaic (PV) system. Input your location, system size, and other parameters to get annual kWh output, savings, and payback period.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
A PVWatts calculator estimates the energy production and cost savings of a grid-connected photovoltaic system based on location, system size, and other parameters.
This calculator provides a simplified estimate. For precise results, use the official NREL PVWatts tool. Our model uses average sun hours and simplified factors.
You need your location, system size in kW, module type, tilt angle, azimuth, electricity rate, and system cost. Default values are provided.