Balance of system share calculator

Type your own line totals. It shows how large the BOS share is under three definitions.

Sorting tool only. Values you type are yours. The two presets are invented examples in USD, not prices. The tool holds no prices and no per-watt figures. Each definition is explained on the page.
Examples (invented values):
DefinitionBOS value (USD)BOS share

Definition 1 counts structural and electrical hardware only. Definition 2 adds the inverter. Definition 3 counts everything except modules, including soft costs. DOE-style hardware is modules, inverters and both hardware BOS groups (no storage line).