Defined term
Solar system size
Solar system size is the rated power capacity of a photovoltaic system, commonly expressed in kilowatts.
Also known as PV system capacity
measurement · Concept code GS-CONCEPT-009 · Last verified August 7, 2026
Definition and decision context
Definition
Solar system size is the rated power capacity of a photovoltaic system, commonly expressed in kilowatts.
Verified August 7, 2026
Why it matters
System size is an input to production, cost, and savings estimates, but it does not by itself state annual output.
Verified August 7, 2026
Concept relationships
Related concepts
- Annual solar productionPublished concept
Affects
- Annual solar productionPublished concept
- Payback periodPublished concept
Primary sources
- National Renewable Energy Laboratory: PVWatts Calculator
Accessed August 7, 2026 · Source event date unavailable
Related GeoStellar pages
- Calculators / Solar savingscalculatedBy