Installers are the first to touch an asset — and the first to feel the pain of disconnected data. DERpass is created at commissioning, travels with the asset, and makes every downstream handover a file copy instead of a reconstruction project.
Component data typed into the commissioning report, then re-keyed into the ERP, then re-typed into the DSO portal, then re-entered into the handover template. Every step introduces risk of error.
Commissioning documentation lives in scanned PDFs on a shared drive. Datasheets are photographed on personal phones. No downstream system can read this data without a human in the loop.
Handing over to an O&M provider means assembling a folder, zipping it, and emailing it — hoping that all certificates are included, filenames are consistent, and the receiving party can make sense of it.
When a technician is on-site for a fault, they have to call the office to look up what inverter model is installed, what the metering concept is, or what happened at the last service visit.
Component data should be entered once at commissioning and consumed by every downstream party — O&M, DSO, registry — without re-keying.
The format must carry exactly the fields required by national registry portals (DE: MaStR/BNetzA; NL: EAN/E17) so import is possible without reformatting.
The handover artifact must be self-contained — all component data, certificates, and grid information in one place — so nothing is lost in translation between parties.
A service technician must be able to access the full system record — components, wiring, metering, event log — on a mobile device without depending on an office system or internet connection.
A single .derpass captures modules, inverters, storage, arrays, metering concept, and grid connection at commissioning time. Every downstream party receives the same structured source — no re-typing required.
The DE national profile includes MaStR number, BNetzA registration date, VDE norm references, and feed-in tariff fields — structured exactly as the registration portals expect them. The NL profile covers EAN codes and E17 metering identifiers.
The .derpass is self-contained: components, datasheets, certificates, grid connection, and the beginning of the event log — all in one file. Hand it over with a single file transfer. No ZIP, no missing attachments, no phone calls.
The DERpass viewer runs entirely in the browser — no install, no account. A technician can open the system record on any device with a browser, see all components, the metering concept, and the full event log, even without connectivity to an office system.