The Effects of not Implementing DST on Electricity Energy Consumption (A Case Study of Tehran Electricity Region)

In this article, the effects of not using DST (Daylight Saving Time), on electricity consumption in Tehran Electricity Region are examined and the corresponding monetary cost is evaluated. The study uses an econometric model based on Intervention Analysis. The data includes the hourly consumption of electricity during two months of the year (Farvardin and Ordibehesht 1384-1385, 21th March up to May 2006 and 21th March up to 21th May 2007). Results indicate that the consumption increases during peak hours of the noon and night is significant, while the consumption decreases in some other hours is not significant. Both the load and its duration in the peak, have increased and energy use has experienced an increase of 227MWh. Energy use, in addition to its normal annual growth, has grown and created a huge social cost, not to mention the other social damages such as traffic fatalities, environmental costs and ….