Who it is for
Energy managers, consultants, and auditors who normalize consumption data against weather conditions.
AI Connectors · Business Operations
Energy-Data.io Degree Days
Heating and cooling degree day lookups on request
Overview
What Energy-Data.io Degree Days does
Degree days are the standard input for weather-normalizing energy consumption, and this app returns them on request. Heating and cooling figures come back for a named city or a pair of coordinates, over a chosen date range, calculated against whatever base temperature the work calls for. Outside temperature data is available the same way.
The result is plain numbers ready to drop into a savings calculation or a measurement and verification report, which removes the spreadsheet lookup that normally comes first. The underlying source is the weather data engine behind Energy-Data.io, developed by Onyx Dynamics.
What stands out
Base temperature is a parameter rather than a fixed assumption, so figures can follow the convention a given report uses.
Availability
Where Energy-Data.io Degree Days is listed
Energy-Data.io Degree Days is listed in the ChatGPT apps directory only. Onyx Dynamics LTD has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
In the ChatGPT apps directory
- Developer
- Onyx Dynamics LTD
- Filed under
- Business & Operations
- Listed since
- June 2026
- Authentication
- Authenticates when installed
- Website
- energy-data.io
- Policies published
- Privacy policy · Terms of service
- Official listing
- Open in ChatGPT
- Snapshot
- August 2026
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This is an independent catalogue entry compiled by Node8 from Energy-Data.io Degree Days's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Onyx Dynamics LTD, and inclusion here is not an endorsement.
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