You don't need the biggest power station and four panels at once. Phasing works because you measure — and don't buy what your device can't safely accept.
Guide
Realistic yield, phasing
No roof, no permit, no seven-figure gamble — but what should you expect from a 250 Wh–3 kWh system in Central Europe? Here are the guide articles: why it pays off, and how to start small.More numbers and realistic examples
If you want to know how to calculate cold Voc, or why the 400 W label isn't enough: registration brings new materials and calculators.