Tag Archive for 'energy'

Two Energy Futures from Shell Oil

This week Shell oil published an article by their chief executive Jeroen van der Veer that presents two scenarios of global energy development - Scramble and Blueprints. Shell has long been a leader in scenario planning. Other Shell scenarios and previous Shell scenarios are also available online.

…the distant future looks bright, but much depends on how we get there. There are two possible routes. Let’s call the first scenario Scramble. Like an off-road rally through a mountainous desert, it promises excitement and fierce competition. However, the unintended consequence of “more haste” will often be “less speed,” and many will crash along the way.The alternative scenario can be called Blueprints, which resembles a cautious ride, with some false starts, on a road that is still under construction. Whether we arrive safely at our destination depends on the discipline of the drivers and the ingenuity of all those involved in the construction effort. Technological innovation provides the excitement.

Regardless of which route we choose, the world’s current predicament limits our room to maneuver. We are experiencing a step-change in the growth rate of energy demand due to rising population and economic development. After 2015, easily accessible supplies of oil and gas probably will no longer keep up with demand.

As a result, we will have no choice but to add other sources of energy – renewables, yes, but also more nuclear power and unconventional fossil fuels such as oil sands. Using more energy inevitably means emitting more CO2 at a time when climate change has become a critical global issue.

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Global energy metabolism of humanity

Helmut Haberl from the Institute of Social Ecology, at Klagenfurt University in Vienna, who does interesting work on human appropriation of ecological production, has a paper The global socioeconomic energetic metabolism as a sustainability problem in a special issue of Energy 31 (2006) 87–99. In the paper, Haberl some interesting figures that estimate total human energy use over the last 1,000,000 years and since the widespread use of fossil fuel.

Haberl writes:

conventional energy balances and statistics only account for energy carriers used in technical energy conversions as, for example, combustion in furnaces, steam engines or internal combustion engines, production and use of electricity or district heat, etc. That is, energy statistics neglect, among others, biomass used as a raw material as well as all sorts of human or animal nutrition. These are very important energy conversions in hunter-gatherer and agricultural societies, but are still significant even in industrial society.

social ecological energy use over last 1Myears

Global socioeconomic energy metabolism in the last 1 Million years. The increase in socioeconomic energy flows encompasses six orders of magnitude, from 0.001 Exajoule per year (EJ/yr) about 1 million years ago to nearly 1,000 EJ/yr today.

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