Accruals - Examples
Appendix A - Example For Contiguous Consumption Data
Below is a worked example showing how 3 missing months of data would be populated with accrued data using historical data.
Month | No. of days in the month | Consumption | Units |
Jan-15 | 31 | 200.0 | kWh |
Feb-15 | 28 | 200.0 | kWh |
Mar-15 | 31 | 150.0 | kWh |
Apr-15 | 30 | 200.0 | kWh |
May-15 | 31 | 200.0 | kWh |
Jun-15 | 30 | 200.0 | kWh |
Jul-15 | 31 | 200.0 | kWh |
Aug-15 | 31 | 200.0 | kWh |
Sep-15 | 30 | 200.0 | kWh |
Oct-15 | 31 | kWh | |
Nov-15 | 30 | kWh | |
Dec-15 | 31 | kWh |
For the period where we have data (1-Jan-2015 to 30-Sep-2015) the daily average is calculated as follows:
Total number of days of data = 273 days
Total consumption = 1750 kWh
Daily average = 1750/273 = 6.41 kWh/day
When the system fills in Oct, Nov, and Dec with accrued data it multiplies the daily average by the number of days missing in the period.
Therefore:
The Oct-2015 accrual = 6.41 kWh/day * 31 days = 198.7 kWh
The Nov-2015 accrual = 6.41 kWh/day * 30 days = 192.3 kWh
The Dec-2015 accrual = 6.41 kWh/day * 31 days = 198.7 kWh
Month | No. of days in the month | Consumption | Units |
Jan-15 | 31 | 200.0 | kWh |
Feb-15 | 28 | 200.0 | kWh |
Mar-15 | 31 | 150.0 | kWh |
Apr-15 | 30 | 200.0 | kWh |
May-15 | 31 | 200.0 | kWh |
Jun-15 | 30 | 200.0 | kWh |
Jul-15 | 31 | 200.0 | kWh |
Aug-15 | 31 | 200.0 | kWh |
Sep-15 | 30 | 200.0 | kWh |
Oct-15 | 31 | 198.7 | kWh |
Nov-15 | 30 | 192.3 | kWh |
Dec-15 | 31 | 198.7 | kWh |
Appendix B - Cost Accruals Example Using Last Invoice
An Electricity Account has the following cost data. The last bill has a start date of 16-Mar-2016 and an end date of 15-Apr-2016 with $310 as the cost. Assuming today is 1-Jun-2016.
To calculate the cost accruals:
Cost Daily Average = Total cost of latest bill(s) / Total number of days of latest bill(s) = $310 / 31 = $10 / day
Cost Accruals for missing days in Apr-2016 = Total number of missing days in the month * Cost Daily Average = 15 days * $10 / day = $150
Cost Accruals for May-2016 = Total number of missing days in the month * Cost Daily Average = 31 days * $10 / day = $310