Title/Description of the element

In this case

Case name

Ventilation system in an office building

Significant energy use

Ventilation: electricity consumption in kWh

data frequency/highest common interval between observation

1/86,400 Hz (24 h)

Baseline period

1st November 2017-1st November 2018

ECM implementation

2nd November 2018

Reporting period

3rd November 2018-24th July 2019

Achieved savings

5739.801 kWh

95% prediction interval

+/− 369.784 kWh (6.4% of est. savings)

Regression model

Y = 14.05 + 207.78D1 + 179.04D2 + 164.42D3 + 163.05D4 + 164.35D5 + 98.33D6 − 19.91D7

R²

0.97

Root mean squared error (RMSE)

15.83

Coefficient of variation CV(RMSE)

0.12

Table of coefficients