Defined term
DC-to-AC ratio
NREL PVWatts defines the DC-to-AC ratio as a positive model input with a default value of 1.2.
measurement · Concept code GS-CONCEPT-127 · Last verified August 28, 2026
Evidence as-of date unavailable · 1 source has no source-event date
Content modified 2026-08-28
Definition and decision context
Definition
NREL PVWatts defines the DC-to-AC ratio as a positive model input with a default value of 1.2.
Verified August 28, 2026
Why it matters
PVWatts treats the DC-to-AC ratio as an input parameter, so it must be specified before a modeled result is interpreted.
Verified August 28, 2026
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Primary topic: Performance
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Primary sources
- National Laboratory of the Rockies: PVWatts V8 API — Request Parameters and Output Fields: poa, poa_monthly, dc_ac_ratio, inv_eff, bifaciality, albedo, and soiling
Source event date unavailable · Ontology accessed August 28, 2026 · Ontology verified August 28, 2026