by kublikhan » Wed 28 Mar 2018, 01:41:22
$this->bbcode_second_pass_quote('Plantagenet', 'S')ure. Thanks for the explanation.
However, my point remains-----the graph doesn't match the actual data on world energy consumption. Fossil fuels currently account for almost 90% of world energy consumption---not the 75-80% shown in the Shell plot. Renewable energy and nuclear account for a bit over 10% of global energy production---not the ca. 20-25% shown in the Shell plot.
Its hard for me to take the Shell projections into the future seriously when they can't even get the data right for past and present global energy use. And even Shell's own CEO admits that their assumption that the Paris Accords will magically cause fossil fuel use to rapidly dwindle away starting 5-6 years down the road is tantamount to a "Goldilocks scenario".
The discrepancy arises because most global energy statistics don't include traditional biomass in their energy data. It is decentralized and undocumented so it is difficult to gather precise energy data on it. However if you include the energy consumption via traditional biomass, Shell's data for 1980 to present makes more sense.
$this->bbcode_second_pass_quote('', 'A')bout 2.4 billion people rely on traditional biomass, mainly for cooking and heating (IEA, 2002). Essentially all of those users of traditional fuels reside in developing countries, and most of them live in rural areas; low incomes and the lack of access to alternative, modern fuels explain their choice of traditional energy supply. By the late 1990s, IEA (1998) estimated that biomass accounted for approximately 14 percent of final energy consumption, roughly on par with electricity (14 percent).
Despite the significance of biomass at the world level, this energy source is often treated as a mere footnote item in most sources of global energy statistics. Traditional biomass energy usually is excluded from analyses of global energy demand trends. This energy source is not regularly monitored in the same way as conventional or commercial energy sources because of the difficulties associated with collecting biomass energy data and the decentralized nature of biomass energy systems. Nevertheless, most large countries gather at least some data on traditional biomass energy, and some international organizations assemble those national data and provide additional estimations. The Appendix to this paper summarizes the main international sources of this data. Biomass energy is mainly used in the household sector in developing countries, where on average it accounts for about 75 percent of the total final energy use. However, traditional biomass also provides an important fuel source for traditional industries and for services in urban areas as well as in rural zones.