OPINION: Natural gas prices are falling, why are electricity tariffs rising?

Natural gas is the dominant fuel for electricity generation in Singapore. [link]
When natural gas prices are falling to its lowest level in decades, why are our electricity tariffs rising? [link]

Financial Post, 12 Jan 2012
WHY NATURAL GAS IS TANKING
Warm weather across the north-eastern United States and soaring output from fracked oil and gas fields have pushed gas prices down to some of the lowest levels for a decade, piling pressure on beleaguered domestic gas producers.
Front-month gas futures prices slumped 5.7 percent yesterday, to $2.77 per million British thermal units (mmBtu). Prices have fallen almost continuously since last summer and are now down nearly 45 percent since June 2011.
It is all a far cry from the $13 gas traded in the summer of 2008 or $15 in late 2005. Full story

Forbes.com, 10 Jan 2012
OIL AND NATURAL GAS PRICES GET DIVORCED - DONALD MARRON
Each Btu of oil is now worth about five times as much as each Btu of natural gas. Thanks to a torrent of new supply, natural gas prices are down at $3.00 per MMBtu even as oil (as measured by the WTI price) has risen back above the $100 per barrel mark. Full story