Hsien Loong startled the audience of his National Day
speech asking the people to ‘kee chiu’ if they think electricity tariff is
lower than 10 years ago. Many got it wrong, believing that electricity today is
higher instead of lower. He then showed two graphs, one on electricity tariff
and another on oil price to show the complementarity of the movements of the
two items. When oil price is up, tariff is up. The audience was astonished that
electricity price today was lower than 10 years ago. Hsien Loong supplement his
discovery with this statement:
‘”Describing the issue of electricity tariffs as “more
complicated”, he noted that the current rate of 23.65 cents/kwh is more
affordable than it was in the third quarter of 2008 at 25.07 cents/kwh.
’––Singapore’s electricity tariffs are dependent on
the fluctuations in oil prices as the nation uses natural gas – all imported –
to generate almost all of its electricity, he explained.’ Yahoo News
Many in the audience or watching the TV must be amazed
for seeing that electricity tariff has actually gone down and their perception
was wrong, that electricity price is high. Here are the two charts.
For flashing the two charts in a speech and giving the
audience very little time to ponder and understand what they were shown is a
clever way of getting one’s point across. Now we have a bit more time reading
the charts and see what they meant and whether they really made sense. Yes, the
tariff is lower today, 23.65 cents against 25.07 cents. What about the relative
oil prices for the respective time? I could not figure out the scale of the above oil price chart. To me the numbers were funny. Below is a 10 year oil price chart by Macrotrends.net. Oil price peaked in 2008 to US$140 per barrel and hit a low of US$30 in 2009 and below US$30 in 2015.
Oil price in 2008 was $140 per barrel against $60 per
barrel today. If electricity tariff is to fluctuate in sync with oil price,
when the oil price is halved, should not the electricity tariff be halved as
well or somewhere near there? The 23.65/25.07 numbers showed that electricity
tariff has fallen by 1.42 cents or 5.66%! Should it not be bigger for the
80/140 or 57% difference in price of oil? The latter is the percentage of change when oil price fell from $140 to $60.
Yes they both swing in the same direction but the
quantum is vastly different. Does it make sense that one changed by 57% and one
by 1.42%?
What is the problem with the numbers? What is the problem with the charts? Should the
people be happy that electricity prices have fallen by 1.42%? Or should it go
down by a bigger percentage? Why is the fall so miniscule?
The above chart shows the prices of oil over the last
10 years. The chart Hsien Loong presented showed the prices of electricity of
the same period but the fluctuation is not more than 5 cents each way.

