SunPlanner Get SunPlanner Field Notes
What I have learned while building and using a solar planning app for off-grid life.
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Calibration screen image unavailable Calibration compares saved predictions with the production you log, then adjusts later estimates after enough usable readings.
Winter scenery image unavailable Shorter daylight, a lower sun path, weather, and new obstruction angles can reduce winter solar production even when the same panels remain in place.
Panel placement image unavailable Panel wattage is a standard rating, while real output changes with sunlight, temperature, angle, system losses, and the conditions around the array.
SunPlanner phone image unavailable A purchased solar app did not move with me when I changed phones, so I built my own. Using it exposed the forecasting problem I wanted to solve.
Start with daily energy use, choose how many backup days you want, and use an editable battery-capacity assumption to estimate the bank you may need.
Sun Finder screen image unavailable Use Sun Finder to compare the sun path and panel direction at a place you are considering before you commit to the drive.
16-day Outlook image unavailable SunPlanner combines forecast conditions with your configured solar system, then shows a daily estimate, expected range, and confidence for planning.
Calibration progress image unavailable SunPlanner starts calibrating after three usable production readings. Here is what it compares, what it ignores, and how the estimate keeps adjusting.
SunPlanner is available now for Android.
Available now on Google Play