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Status Not under consideration
Workspace IBM Envizi - ESG Suite
Categories Building Ratings + Benchmarks
Created by Guest
Created on Dec 6, 2024

RELATED IDEAS

GRESB API Should Export Energy Directly from Stored kWh (Not Converted from GJ), If Available

See this idea on ideas.ibm.com

Currently, when energy data is stored in Envizi as kWh, if the annual energy amount is uploaded to GRESB via API Sync, it is not exported directly as kWh.  Instead, the converted amount in GJ is then converted back to kWh (i.e., GJ / 0.0036 = kWh).  This results in a small but substantial loss of precision.  

Since GRESB requires that energy data be imported in kWh, I would suggest a modification to the upload logic whereby energy is only converted if it is not already stored in kWh.  The current double-conversion results in discrepancies between the annual amount in Envizi and its counterpart in GRESB.  While small individually, there is a potential cumulative effect that could possibly impact overall portfolio score.

Idea priority Low
Needed By Not sure -- Just thought it was cool
  • Post comment
  • Admin
    Eugene Yu
    Reply
    |     Mar 3, 2025

    Thanks for raising the enhancement request and provide the context in detail.

    In general all energy units in Envizi are converted to GJ first should it be required for further aggregated reporting in another unit. This is a general behaviour core to Envizi and is not exclusive to GRESB reporting.

    Unit conversions are done using conversion factors with 8 decimal places to preserve highest precision as possible. In this case it happens that both the original data unit and reporting unit are the same (kWh), but in cases when the units differ, the conversion precision rounding would be inevitable.

    The unit conversion is core to the Envizi reporting engine and we don't have a plan to alter this in the future.

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