Solar façade energy production of the TalTech Residential DC Innovation Hub
Tallinn University of Technology (TalTech), Tallinn, Estonia

DATA COVERAGE
Initial dataset is given for 1 January 2024 to 30 September 2026, with 33 monthly CSV files
with 1,004 daily records. From October 2026, the dataset will be regularly updated.

INSTALLATION
Solar façade at the TalTech Residential DC Innovation Hub.
Orientation: approximately 12 degrees east of due south, corresponding to an
azimuth of 168 degrees clockwise from north. No tilt, module rating, 
irradiance, or additional installation parameters are inferred.

MEASUREMENT AND PROCESSING
The input is a daily energy-production export from the PV interface converters.

The source unit is Wh. The exported source column does not include a unit in
its header. The reported quantity is electrical energy production.
The daily export does not contain separate per-microinverter records.

The original date labels are retained as local calendar dates (Europe/Tallinn).
The source's 00:00:00 timestamps are date labels for daily totals. The data have
daily resolution; no intraday values have been reconstructed. CSV values use a
decimal point and four decimal places in kWh, retaining the arithmetic result
without claiming additional measurement accuracy.

FILES AND COLUMNS
monthly_data/TalTech_Residential_DC_Hub_Solar_Facade_YYYY-MM.csv
  One file per full calendar month; UTF-8, comma-delimited, one header row.
  date: local calendar day, YYYY-MM-DD.
  energy_production_kwh: daily energy production, kWh, on the five-module basis.

TalTech_Solar_Facade_Monthly_Totals.csv
  month: YYYY-MM; days: number of daily records; energy_production_kwh: monthly sum.

metadata.json
  Machine-readable description, methods, coverage, column definitions, validation
  results, monthly file names and SHA-256 checksums.

TalTech_Solar_Facade_Energy_Production.png and .svg
  TalTech-colour overview of daily production and monthly totals.

QUALITY AND COMPLETENESS
Every included month has exactly one valid observation for every calendar day,
including 29 February 2024. There are no missing or duplicate dates and no
negative values. All 11 source zero-value days are retained. Complete date
coverage does not establish uninterrupted monitoring within each day.
No interpolation, smoothing, gap filling, or outlier replacement was applied.