System Operators & O&M Providers

From spreadsheet chaos
to an auditable event log.

O&M providers manage assets they didn't commission, with data they didn't create, in formats they didn't choose. DERpass gives them a single canonical file per asset — event log, component data, maintenance schedule, and reporting inputs — from day one.

What O&M providers deal with today.

01

One spreadsheet per asset, partially filled

Each managed system has its own spreadsheet, built by whoever onboarded it — partially from the installer's handover, partially reconstructed from portal exports. Data quality is inconsistent across the portfolio.

02

Maintenance history disconnected from asset data

Service tickets live in a helpdesk system. Asset data lives in a different tool. Linking them requires manual cross-referencing. When an asset changes operator, the ticket history stays behind.

03

Owner reports assembled from multiple exports

Producing a monthly owner report requires pulling yield data from the monitoring platform, contract details from the CRM, and maintenance records from the ticket system — then assembling them manually in a template.

04

Onboarding new assets takes weeks

Taking on a new portfolio means collecting data from each installer, chasing missing certificates, building a new spreadsheet per asset, and normalizing all of it into the operator's own system before any productive work can begin.

What O&M providers need from a data standard.

R1

Auditable event log as part of the asset record

Every maintenance visit, repair, curtailment, and firmware update should be logged in the same file as the asset data — timestamped, with technician attribution, and linked to the asset it describes.

R2

Machine-readable maintenance schedules

Due dates and service intervals should be structured fields that a scheduler or monitoring dashboard can consume directly — not free text in a PDF that someone has to read and re-enter.

R3

Single source of truth for reporting

Owner reports should be generatable from one canonical file, not assembled from exports across three systems. The file should contain everything an owner needs: components, yield, contracts, and history.

R4

Standard intake format for new assets

A file format that any installer can produce and any O&M platform can consume without custom integration work — validated by a public schema, not negotiated per project.

How DERpass addresses these needs.

Event log is part of the asset file

Every maintenance visit, fault, curtailment event, firmware update, and ownership change is appended to the events chapter — timestamped, typed, and optionally signed. When the asset moves to a new operator, the history moves with it.

Machine-readable maintenance due dates

The maintenance chapter carries O&M contract terms, inspection intervals, and next-due dates as structured fields — feed them directly into any scheduler, monitoring dashboard, or alerting system without manual extraction.

Owner reports from a single canonical file

The .derpass contains components, generation data, compensation terms, maintenance history, and insurance — everything needed for an owner report. Generate it from the file instead of assembling it from multiple system exports.

Schema-validated intake for new assets

Accept a .derpass as the standard handover format from any installer. Validate it against the public schema in seconds. If it passes, you have everything you need to import the asset — no chasing, no normalization.

Who this applies to.

EnerparcO&M Portfolio Manager · DE
BayWa r.e. OperationsAsset & O&M Services · EU
ENERVISEnergy Asset Advisory · DE
Mondstein SolarResidential O&M · DE
Sungevity EuropeDistributed Portfolio Operator · NL
Independent O&M FirmsRegional portfolio operators

See it in a file. The 35 kWp full-backup example includes a multi-year event log covering commissioning, firmware updates, annual inspections, and a battery fault — the kind of history an O&M provider needs to inherit when taking on an asset.