Follow each module, inverter, pack and structure by serial number from assembly through test to site.

These makers share a habit of identity. A solar module, an inverter, a battery pack and a turbine casting each leave the plant with a serial number, a test result and a destination. Years later, someone will ask which cells went into that module, or which cell lot went into that pack, and which test it passed before it was shipped. The answer must come from a record.

The processes differ widely. Panel makers string cells, laminate and flash-test. Mounting structure makers cut, punch and galvanise steel. Inverter and battery pack makers assemble boards, cells and enclosures, then run burn-in and safety checks. Turbine component makers cast, machine and inspect heavy parts. Storage system builders integrate packs, power electronics and thermal management into a container or cabinet.

Sales follow projects. Orders come from installers, developers and utilities, usually in stages tied to a site schedule. Warranty claims arrive long after dispatch. They need the original build data, the test results and the shipping papers, found without a search through old folders and bench computers.