OnGrid · Commercial
Rooftop PV for a commercial building
Context
A typical use case: sizing a grid-connected PV system for a flat rooftop in a sunny region. The goal was to estimate annual production and choose panel and inverter counts so the system could offset a large share of daytime consumption and feed surplus to the grid.
Approach
The design system was used in Sizing mode with OnGrid and Monthly resolution. The desired DC capacity was entered and the site location set via the map. The output provided suggested panel and inverter counts and cable cross-section. Production was then run with the selected equipment to obtain monthly and yearly energy estimates. The Financial tab was used to review high-level cost indicators when the option was enabled.
Outcome
The team had a clear basis for component selection and production expectations. Monthly breakdown helped align the system with seasonal consumption patterns. Results were used internally for feasibility and were not a substitute for detailed engineering or grid connection studies.
Key takeaways
- OnGrid sizing with location and capacity gives a solid starting point for commercial rooftops.
- Monthly production curves help match supply to typical demand profiles.
- Always validate sizing and economics with local standards and a qualified installer.
