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SunYield Calc
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Production Forecast

Your production this week

Real weather forecast for the next 7 days, applied to your installation.

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Solar Forecasting FAQs

How accurate is this solar production forecast?
Our forecasting model uses real-time satellite irradiance data and high-resolution cloud cover predictions from the Open-Meteo API. It calculates exact sun angles based on your specific latitude, longitude, and panel orientation to provide highly localized yield estimates.
How does cloud cover affect my solar yield?
Heavy cloud cover can reduce solar panel efficiency by 40% to 80% depending on the density of the clouds. Our forecast factors in the exact percentage of low, mid, and high-level clouds to dynamically adjust your expected daily kWh output.
What is the optimal solar panel tilt for winter months?
During winter, the sun sits lower in the sky. To maximize production in colder months, panels should ideally be tilted steeper (around 45° to 60° depending on your exact latitude) to capture direct sunlight and shed snow or rain more easily.