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Check the ratio of array DC capacity to inverter AC rating — the inverter load ratio — and see whether it sits in the typical range or risks clipping.
DC:AC ratio
1.32
Assessment
A typical, healthy ratio — a modest DC oversize that uses the inverter well across the day, with little clipping.
The DC:AC ratio — also called the inverter load ratio (ILR) — is simply the array's DC capacity divided by the inverter's AC rating:
DC:AC = array (kWp) ÷ inverter (kW)
A ratio above 1.0 means the array is “oversized” relative to the inverter. Modest oversizing (commonly ~1.1–1.4) harvests more energy in the morning, evening and on cloudy days, when the array rarely reaches its nameplate. Push it too high and the inverter caps (“clips”) the array's peak on the brightest days. The right number depends on your panels, orientation, climate and goals — treat this as a sanity check, not a design.
Estimates only — for guidance, not a quote or engineering specification. Nothing you enter is stored or sent anywhere; the maths runs entirely in your browser.
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