Enectiva REST API - Librarian
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  1. Deltas
  • Introduction
  • Access tokens
    • Create a new access token
      POST
  • Data points from Enectiva
    • List data points of a data series
      GET
  • Deltas
    • Introduction to Deltas
    • List monthly deltas of an entity
      GET
    • List monthly deltas of a meter
      GET
    • List monthly deltas of a virtual meter
      GET
  • Data points to Enectiva
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      GET
    • Create a new data point
      POST
    • Delete a data point by ID
      DELETE
    • Delete a data point by time
      DELETE
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      POST
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      DELETE
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      DELETE
  • Readings to Enectiva
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      GET
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      POST
    • Delete a reading by ID
      DELETE
    • Delete a reading by time
      DELETE
  • Entities from Enectiva
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      GET
    • Entity
      GET
  • Readings from Enectiva
    • List readings of a meter
      GET
  • Meters from Enectiva
    • List meters
    • Meter
  • Received energy invoices
    • Create a new invoice
  1. Deltas

Introduction to Deltas

Deltas are (usually interpolated) consumption values matching calendar months.
The basic example is an electricity meter with readings:
2017-12-31 23:00:00 - 820 kWh
2018-01-01 03:00:00 - 824 kWh
...
2018-01-31 23:00:00 - 978 kWh
2018-02-01 01:00:00 - 980 kWh
Readings are just samples of a continuous process. To obtain a delta for Jan '18, we first interpolate readings at the beginning and end of the month:
820 kWh + (824 kWh - 820 kWh) / 4h * 1h = 821 kWh
978 kWh + (980 kWh - 978 kWh) / 2h * 1h = 979 kWh
The difference is the delta for Jan '18: 979 kWh - 821 kWh = 158 kWh.
Modified at 2025-09-03 19:33:53
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List monthly deltas of an entity
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