Solar SOC replays years of real weather for your exact location, hour by hour, to show how your battery bank's state of charge holds up. Find the cloudy stretches that drain it, and size your panels and batteries for year-round power.
More realistic batteries, saved projects, and simulations that account for the cold.
Name a setup for each property or design option, then compare their results side by side.
AGM, Gel and Car/Starter batteries join LiFePO4 and Flooded Lead-Acid, each with its own efficiency and self-discharge.
Real air temperatures reduce battery capacity in the cold, and the results show your coldest battery temperature.
Model an aging battery bank by setting how much of its original capacity is left.
Optionally cap charging current to match controllers like the Ubiquiti SolarSwitch.
Simulations now use true solar time for your longitude.
Designed for both iPhone and iPad.
Built for off-grid homes, cabins, RVs, remote equipment and backup power.
Hourly sunlight and temperature for your location from the National Solar Radiation Database (via the NLR Developer Network), for any years from 2018 to 2024.
See every time your batteries run low, with the two weeks of weather and battery charge that led up to it.
Battery charge, power flow and solar generation, from a single week to every year at once.
Use your current location, set panel size, tilt and direction, or tap Optimize for Winter Solstice.
Solar data is saved on your device after the first download, so you can rerun simulations anywhere.
Export the full hour-by-hour results to a spreadsheet for your own analysis.
Find out whether your solar and battery setup will get through the darkest weeks of the year.