Start with a coordinated bundle when you want the principal solar and battery components brought together around a clear system size. These packages can reduce the time spent building an initial equipment list and provide a useful basis for a residential or small commercial proposal. Every site is different, so confirm roof layout, electrical demand, supply arrangement, cable routes, mounting, protection, metering and installation requirements before ordering. Review exactly what is included in each bundle and add any project-specific balance-of-system items identified during design.