23/05/2026
Solar and wind only run when the weather cooperates, and a solar system's capacity factor sits around 15-20%, so the panels rarely produce exactly when you need the power.
A battery fills that gap by storing the midday surplus and releasing it in the evening when household and grid demand peak. Modern LiFePO₄ systems return 85-95% of what you put in, which is what makes the storage economics work and lets a well-sized setup pay back in roughly 3-7 years depending on local prices. Storage isn't a nice-to-have add-on anymore, it's what turns variable generation into power you can actually rely on.
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