Solar Production Forecasting for SolaX Inverters
See tomorrow’s likely solar production before you plan the day. It is much easier to move EV charging, laundry or heating when you know the weather is not on your side.
Plan Your Day with Solar Forecasts
Knowing how much solar energy you'll produce tomorrow changes how you use electricity today. SolaxMonitor's forecasting engine combines your system specifications — panel capacity, tilt, and orientation — with hyperlocal weather predictions to estimate hourly production.
Use the forecast to decide when to run energy-intensive appliances like washing machines, EV chargers, or pool pumps. Schedule heavy loads during peak production hours to maximize self-consumption and minimize grid import.
Hourly Production Estimates
See predicted solar output hour-by-hour for today and the coming days.
Weather Integration
Cloud cover, rain probability, and temperature overlaid with your forecast.
Forecast vs. Actual
Compare predicted production against actual output to gauge accuracy.
Multi-Day Outlook
Plan ahead with production forecasts spanning multiple days.
How the Forecast Engine Works
The forecasting system uses the Forecast.Solar API, a widely-used irradiance model for residential solar systems. It takes your location (latitude/longitude), system capacity in kWp, panel tilt angle, and panel azimuth to calculate expected solar irradiance throughout the day.
Weather data — specifically cloud cover percentage — is layered on top to adjust the clear-sky irradiance estimate. The result is an hourly production curve that accounts for both your system's physical characteristics and real-time weather conditions.
Maximize Self-Consumption
The real value of solar forecasting is behavioral: when you know your panels will produce 25 kWh tomorrow, you can plan accordingly. Charge your EV during peak solar hours. Run the dishwasher at noon instead of midnight. Pre-heat your water tank while the sun is shining.
Every kilowatt-hour you consume directly from your panels is a kilowatt-hour you don't buy from the grid — and don't export at a lower feed-in tariff. Solar forecasting is the bridge between monitoring what happened and planning what happens next.
Frequently Asked Questions
How does solar production forecasting work?
SolaxMonitor uses your location, system size, panel orientation, and real-time weather data to predict how much solar energy your panels will produce. The forecast combines irradiance models with cloud cover predictions to estimate hourly production for the coming days.
How accurate are the solar forecasts?
Forecasts are usually close on clear days and messier when clouds move through quickly. In practice, the useful part is comparing forecast vs. reality for your own roof and learning how your site behaves.
Do I need to enter my panel specifications?
SolaxMonitor works best when you provide your system capacity (kWp), panel tilt angle, and azimuth (compass direction). These are entered once during setup. If you don't know your exact specs, the app provides sensible defaults based on your location.
Can I see weather data alongside my solar forecast?
Yes. The forecast page shows cloud cover, temperature, sunrise and sunset by hour, so you can see why a day looks weak or unusually strong.
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