Sunhub resources
Most solar kits sold online are bundles, not bills of materials. They cover the modules and an inverter, then leave the racking, the DC and AC balance of system and the monitoring for you to source separately at retail prices, on a second lead time. This guide walks the checks that matter when you buy a complete solar panel kit for residential or commercial work: what the BoM has to include, how to confirm the inverter and racking actually match the modules, and how wholesale bundle pricing compares once freight and landed cost are in the number.
A kit priced per watt looks cheap until you list what is missing. Check modules, inverter or optimizers, racking and attachments, DC and AC disconnects, conduit and wire, combiners, monitoring and the labels. Anything absent gets bought at retail later, which is where the savings usually go.
String length has to stay inside the inverter's temperature-corrected voltage window at your coldest expected ambient, and the DC/AC ratio has to suit the array. A kit that pairs modules with an inverter it never string-sized against is a redesign waiting to happen.
Racking is specified for a module size, a mounting surface and a wind and snow load. A kit built around a 60-cell module and a composition-shingle roof will not carry to a large-format module on standing seam or a ground array without new attachments and possibly new engineering.
Modules and racking ship freight, and pallet count, accessorials and delivery distance move the real number. Compare kits on landed cost per watt to the warehouse or the site, so the comparison reflects what you will actually pay.
A bundle assembled from mixed sources can leave you chasing three separate warranty processes. Confirm who the warranty holder is for each component, that the units are current-generation, and that the seller is a verified counterparty rather than an anonymous listing.
Bundling on a B2B marketplace lets you quote the whole BoM at trade pricing across suppliers, apply net terms once and consolidate the freight, instead of paying retail on a boxed kit and shipping four partial orders.
Fix the array size, module choice, mounting surface and service voltage before you shop bundles.
List every line the job needs, including balance of system, monitoring and labels, so gaps in a kit are visible.
Check string voltage against the inverter window and confirm racking is rated for the module and the load condition.
Run the BoM as an RFQ across verified suppliers and compare landed cost per watt, lead time and terms.
Talk with our team about the equipment and services your business needs.
®