For homes
A day of solar at home: panels, battery and the generator
How a hybrid system shares the work through an Iraqi summer day, and why the battery decides how many generator amps you still need.
A hybrid system has three sources: the panels on your roof, a battery, and whatever you used before, the national grid or a neighbourhood generator. The inverter decides, second by second, which one supplies your home.
From mid-morning the panels usually produce more than the house uses. The surplus charges the battery. Around midday, with air conditioning running, the panels still carry the house on their own.
After sunset the panels stop and the battery takes over. How long it lasts depends on its usable capacity and on what you run in the evening. When it reaches its lower limit, the grid or generator supplies the house again.
This is why sizing starts from your evening and night use, not from your daytime use. A larger battery covers more of the night; fewer generator amps are needed.
Move the slider to see each hour of the day. The model is simplified: real output changes with season, dust on the panels and summer heat.
Draft for review by a Tanweer engineer.
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