Global oil output has been stagnant for four years, failing to keep up with rampant demand from Asia and the Mid-East. China's imports rose 14pc last year. Biofuels from grain, oil seed and sugar are plugging the gap, but drawing away food supplies at a time when the world is adding more than 70m mouths to feed a year.
"Markets are as tight as a drum and now the US has hit the stimulus button," said [Jeff Currie, commodity chief of Goldman Sachs bank] in his 2008 outlook. "We have never seen this before when commodity prices were already at record highs. Over the next 18 to 36 months we are probably going into crisis mode across the commodity complex.
"The key is going to be agriculture. China is terrified of the current situation. It has real physical shortages," he said, referencing China still having memories of starvation in the 1960s seared in its collective mind...
Corn can be used for ethanol in cars and power plants, for plastics, as well as in baking tortillas. Natural gas can be made into fertiliser for food output. "Peak Oil" is morphing into "Peak Food".
Land use for biofuels has shot up from 12m to more than 80m hectares worldwide over six years. Biofuel provides 3pc of global energy needs, which will rise to an estimated 10.6pc by 2030.
In a pure market, sugar cane would be the only viable biofuel with a cost of $35 a barrel (oil equivalent). The others are sugar beet ($103), corn ($81), wheat ($145), rapeseed ($209), soybean ($232), cellulose ($305).
Subsidies drive the business. The US offers tax relief of $1 a gallon for biodiesel. The EU has a 10pc biofuel target by 2010.
In other words, the pressure to move to biofuels will have a knock-on effect on the available agricultural land for food production. Some poorer countries will find themselves in the invidious position of having to choose between food and fuel. It is extremely doubtful whether the hoped-for increase in biofuel production can be achieved without creating serious problems for industrialising nations like China and India (which has not seen famine since independence). Which is yet another reason why the option of nuclear power needs to be left open.