COFACTOR-Residential Dataset 2

COFACTOR-Residential Dataset 2 is a dataset from the COFACTOR project containg hourly time series energy use measurements (sub-metered) and weather data from apartment buildings and individual apartments in Risvollan borettslag, Trondheim, Norway.

This dataset contains hourly sub-metered energy use data. Dataset 2 is from a large housing association in Trondheim with 1058 apartments in 121 low low-rise buildings. The buildings were constructed in 1972, and consist of apartments with 1 to 4 bedrooms and 53 to 107 m2 floor area (average 88.6 m2). In average, there are 1.8 residents per household. The buildings are connected to district heating, supplying space heating and domestic hot water. The dataset consist of 20 csv-files, one per heating central, each central/fil contain energy use information from several buildings which are collected together. In addition, the files contain individual smart meter (AMS) electricity use for the different units/apartments. Hourly electricity data is available from 1010 individual apartments. The CSV-files in the dataset contains meta data about the buildings/heating centrals and hourly time series data of energy use and weather data from the buildings. The energy use data varies between the files, but generally consists of weather data, energy use data from main meters (electricity and district heating) and energy use data from sub-meters (eg. heating and per apartment electricity use).

Dataset accessability
Repository name: data.sintef.no
Data identification number:
Direct URL to repository: https://data.sintef.no/product/dp-b750d103-a434-45c2-ba5e-1af13f0a866f
Instructions for accessing the data: The repository is open access and does not require sign-in registration.

Data Summary
- Number of files: 20
- Time series resolution: Hourly
- Time series duration: Variable but 2017-2023 at most.

Files and Structure
The README-file explains all codes and structure of the CSV-files.
Each CSV file in the zip-folder consists of:
1. Metadata Section
- General building details including ID, construction year, floor area, number of buildings and number of units.
- Heating system details
2. Time Series Data Section
- Timestamp format: %Y-%m-%dT%H:%M:%S%z (local normal time: CET, UTC+01:00)
- Weather columns: outdoor temperature, wind speed, wind direction and global solar radiation
- Energy columns: Main or sub-meters [Wh/h]

Data descriptor: https://doi.org/10.1016/j.dib.2026.112580

Citation
If you use this dataset, please cite:
Åse Lekang Sørensen, Synne Krekling Lien, Harald Taxt Walnum,
COFACTOR-residential: Hourly electricity and heating data from residential buildings in Norway. Data in Brief, Volume 65, 2026, 112580, ISSN 2352-3409, https://doi.org/10.1016/j.dib.2026.112580.

Contacts
For questions about the dataset, contact:
Synne Krekling Lien (SINTEF Community)
Email: [e-mail]
Harald Taxt Walnum (SINTEF Community)
Email:[e-mail]

Acknowledgements
The dataset is provided by the projects “Coincidence factors and peak loads of buildings in the Norwegian low carbon society” (COFACTOR) funded by Research Council of Norway and partners through grant number 326891. The authors gratefully acknowledge the support from the Research Council of Norway and research partners. Dataset 2 was developed within the Institute PhD grant (701703) at SINTEF and NTNU, financed by the Research Council of Norway. Contributions from Risvollan housing cooperative, NTE Marked (energy company), Enoco (EMS providor), Fosen Innovasjon (partner), Statkraft varme (district heating company), and TrønderEnergi Nett (DSO) are highly appreciated. The study is part of the Research Centre on Zero Emission Neighbourhoods in Smart Cities (FME ZEN). The authors gratefully acknowledge the support from the ZEN partners and the Research Council.