Technologies that are discussed controversially today may be needed to keep the future risks and costs of climate change in check.
Combining the production of energy from fossil fuels and biomass with capturing and storing the CO2 they emit (CCS) can be key to achieving current climate policy objectives such as limiting the rise of the global mean temperature to below 2 degrees Celsius.
This is shown by the most comprehensive study to date on technology strategies to combat climate change, published in a special issue of the journal Climatic Change. It is based on the analysis of 18 computer models by an international team of scientists under the roof of the Stanford Energy Modelling Forum (EMF 27).
“Versatile technologies seem to be most important to keep costs in check,“ says lead author Elmar Kriegler from the Potsdam Institute for Climate Impact Research. Both bioenergy and CCS can help reduce emissions from non-electric energy use that would be hard to decarbonize otherwise. Examples are the burning of coke in blast furnaces in the steel industry which can be equipped with CCS, and the combustion of petrol for transport which can be replaced by biofuels.
“If combined, energy from biomass and CCS can even result in withdrawing CO2 from the atmosphere and hence compensate remaining emissions across sectors and over time, because grasses and trees absorb CO2 before they are used to produce energy,” explains Kriegler.
In contrast, the availability of individual low carbon technologies in the electricity sector was shown to be less important. This is due to the fact that the electricity sector has a number of mitigation options, like nuclear, solar, and wind power, but also gas and coal power with CCS. So the lack of one of them can more easily be compensated by the others.
**Bioenergy and CCS are important to keep costs in check, but also have risks**
Many simulations in the study could not at all achieve emissions reductions in line with the 2 degrees target without the use of bioenergy combined with CCS. Among those that could, mitigation costs on average more than doubled in scenarios without CCS. “Concerns regarding bioenergy and CCS are highly relevant, but given the potential importance of these technologies, it becomes clear that their opportunities and risks urgently need to be investigated in greater detail,” Kriegler concludes.
Energy from biomass indeed risks competing with food production for land, and sequestering CO2 from power plants underground on an industrial scale is a yet unproven method.
**The technology strategies exist – but depend on climate policy**
A robust feature of the transformation that was identified in the study is an accelerated electrification of energy used by consumers, for instance by increasing the number of electric cars or of electric blast furnaces in the steel industry. Moreover, increasing energy efficiency has proven to be an important strategy to support climate policy, cutting mitigation costs in half. However, energy efficiency improvements alone, without strong policies to decarbonize energy production, would be insufficient to reach the 2 degrees target.
"Our study shows that there are technology strategies that can enable us to reach ambitious climate policy targets with some degree of confidence," says John Weyant, head of the Stanford Energy Modeling Forum. "But these strategies will only be possible if effective climate policies are implemented very very soon."
Article: Kriegler, E., Weyant, J.P., Blanford, G.J., Krey, V., Clarke, L., Edmonds, J., Fawcett, A., Luderer, G., Riahi, K., Richels, R., Rose, S.K., Tavoni, M., van Vuuren, D.P. (2014): The role of technology for achieving climate policy objectives: overview of the EMF 27 study on global technology and climate policy strategies. Climatic Change 123(3-4) [DOI: 10.1007/s10584-013-0953-7]
For further information please contact:
PIK press office
Phone: +49 331 288 25 07
http://link.springer.com/article/10.1007%2Fs10584-013-0953-7 - Weblink to the Article
Jonas Viering | PIK Potsdam
Sea turtles face plastic pollution peril
09.10.2015 | University of Exeter
NOAA declares third ever global coral bleaching event
08.10.2015 | NOAA Headquarters
Having a light touch can make a hefty difference in how well animals and robots move across challenging granular surfaces such as snow, sand and leaf litter. Research reported October 9 in the journal Bioinspiration & Biomimetics shows how the design of appendages – whether legs or wheels – affects the ability of both robots and animals to cross weak and flowing surfaces.
Using an air fluidized bed trackway filled with poppy seeds or glass spheres, researchers at the Georgia Institute of Technology systematically varied the...
Nondestructive material testing (NDT) is a fast and effective way to analyze the quality of a product during the manufacturing process. Because defective materials can lead to malfunctioning finished products, NDT is an essential quality assurance measure, especially in the manufacture of safety-critical components such as automotive B-pillars. NDT examines the quality without damaging the component or modifying the surface of the material. At this year's Blechexpo trade fair in Stuttgart, Fraunhofer IZFP will have an exhibit that demonstrates the nondestructive testing of high-strength automotive body parts using 3MA. The measurement results are available in a matter of seconds.
To minimize vehicle weight and fuel consumption while providing the highest level of crash safety, automotive bodies are reinforced with elements made from...
The MICADO camera, a first light instrument for the European Extremely Large Telescope (E-ELT), has entered a new phase in the project: by agreeing to a Memorandum of Understanding, the partners in Germany, France, the Netherlands, Austria, and Italy, have all confirmed their participation. Following this milestone, the project's transition into its preliminary design phase was approved at a kick-off meeting held in Vienna. Two weeks earlier, on September 18, the consortium and the European Southern Observatory (ESO), which is building the telescope, have signed the corresponding collaboration agreement.
As the first dedicated camera for the E-ELT, MICADO will equip the giant telescope with a capability for diffraction-limited imaging at near-infrared...
Self-driving cars will be on our streets in the foreseeable future. In Graz, research is currently dedicated to an innovative driver assistance system that takes over control if there is a danger of collision. It was nature that inspired Dr Manfred Hartbauer from the Institute of Zoology at the University of Graz: in dangerous traffic situations, migratory locusts react around ten times faster than humans. Working together with an interdisciplinary team, Hartbauer is investigating an affordable collision detector that is equipped with artificial locust eyes and can recognise potential crashes in time, during both day and night.
Inspired by insects
An interdisciplinary team of researchers has built the first prototype of a miniature particle accelerator that uses terahertz radiation instead of radio...
01.10.2015 | Event News
30.09.2015 | Event News
17.09.2015 | Event News
12.10.2015 | Press release
12.10.2015 | Press release
12.10.2015 | Physics and Astronomy