Introduction
As an Otark customer (seller or buyer), providing exact and time-bound energy production or consumption is essential for correctly transferring granular (24/7 carbon free) green energy certificates. In the transitional period until official registers natively support granular certificates, Otark Energy will issue its own. Those granular certificates are backed by and bundled with officially supported volume certificates (“Guarantees of Origin”). One supported solution for providing smart meter data is by uploading them as a CSV file.General Requirements
- One smart meter per file: Each CSV file can only contain data for one smart meter. Uploading data for multiple smart meters via one file is not supported at this time. If this is a requirement please get in touch with us.
- Each row must represent a 15‑minute measurement interval.
- The first row in the file must be a header row containing the column field names.
- Field separator: Semicolon (
;). - Character encoding: Automatically detected (use UTF‑8 if unsure).
Field Specification
The table below defines the allowed & required fields.| Field name | Required | Type | Description | Examples |
|---|---|---|---|---|
| date | yes | String | Date of the measurement (DD.MM.YYYY). | 30.02.2024 |
| time | yes | String | Time of the measurement in the smart meter’s timezone (HH:MM). | 23:30 |
| unit | yes | String | Unit of the measurement. Allowed values: W, kW, Wh, kWh. | Wh |
| value | yes | Integer | Measurement value. Must be a whole number. | 968900 |
| direction | optional | String | Energy flow direction: • P — production • C — consumption If left empty, the system uses the smart meter’s configuration. This field is required if the smart meter is configured for both directions. | P |
| quality | optional | String | To specify the data quality: • U — uploaded (default, for normal measurements) • F — forecast (for data in the future) • E — estimated (for estimated data in the past) | U |