German Institute Delivers Bad News On CO2, E-Cars: “Electric Vehicles Not A Panacea For Climate Change”

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A few days ago here we wrote about how a team of German scientists at the Munich-based ifo Institute released the results of a study that showed that Electric cars end up producing more CO2 than comparable diesel cars.

What follows is the press release in English issued by the ifo Institute:
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ifo: Electric Vehicles not a Panacea for Climate Change

Apr 17, 2019

Electric vehicles will barely help cut CO2 emissions in Germany over the coming years, as the introduction of electric vehicles does not necessarily lead to a reduction in CO2 emissions from road traffic. Natural gas combustion engines are the ideal technology for transitioning to vehicles powered by hydrogen or “green” methane in the long term.

Considering Germany’s current energy mix and the amount of energy used in battery production, the CO2 emissions of battery-electric vehicles are, in the best case, slightly higher than those of a diesel engine, and are otherwise much higher. This has been confirmed by a new study by Christoph Buchal, professor of physics at the University of Cologne; Hans-Dieter Karl, long-standing ifo energy expert; and Hans-Werner Sinn, former ifo president and professor emeritus at Ludwig-Maximilians-Universität München. The researchers carried out their detailed calculations using the concrete examples of a modern electric car and a modern diesel vehicle. In addition to CO2 emissions from battery production, they looked at alternative energy sources for electricity in order to calculate the impact electric vehicles have on CO2 emissions. They show that even with today’s technology, total emissions from a combustion engine powered by natural gas are already almost one-third lower than those of a diesel engine. “Over the long term, hydrogen-methane technology offers a further advantage: it allows surplus wind and solar power generated during peaks to be stored, and these surpluses will see a sharp increase as the share of this renewable energy grows,” Professor Buchal explains.

In their study, the authors criticize the fact that EU legislation allows electric vehicles to be included in calculations for fleet emissions with a value of “zero” CO2 emissions, as this suggests that electric vehicles do not generate any such emissions. The reality is that, in addition to the CO2 emissions generated in the production of electric vehicles, almost all EU countries generate significant CO2 emissions from charging the vehicles’ batteries using their national energy production mixes. The authors also take a critical view of the discussion about electric cars in Germany, which centers around battery-operated vehicles when other technologies also offer great potential: hydrogen-powered electric vehicles or vehicles with combustion engines powered by green methane, for instance. “Methane technology is ideal for the transition from natural gas vehicles with conventional engines to engines that will one day run on methane from CO2-free energy sources. This being the case, the German federal government should treat all technologies equally and promote hydrogen and methane solutions as well,” emphasizes Professor Sinn.

Publication (in German)

  1. Buchal, Christoph, Hans-Dieter Karl and Hans-Werner Sinn, “Kohlemotoren, Windmotoren und Dieselmotoren: Was zeigt die CO2-Bilanz?”, ifo Schnelldienst 72 (08), 2019 | Details | PDF Download

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4 responses to “German Institute Delivers Bad News On CO2, E-Cars: “Electric Vehicles Not A Panacea For Climate Change””

  1. John F. Hultquist

    In both the EU and the USA, average age of the motor vehicle fleet is just under 12 years. If starting now, only EVs are available, just half the existing cars and light trucks would be replaced by 2030. About 2050 almost all of the vehicle fleet could be replaced.
    Even this rate of replacement would be wealth-destroying and disruptive.
    Look at it another way. Say 1% of new vehicles sold this year are EVs. Next year (2020), bump that up to 2%, then 3%. Some countries (at great expense; Norway?) can move faster. Each year a nation’s sales are not 100% EV will extend the full-replacement time frame.
    A few people live to 100, a few longer. If someone lives to about 2120 they may see full conversion of the vehicle fleet. Good luck.

    If anyone thinks CO2 is a problem they should be advocating for nuclear power and supporting all efforts to shorten the time to get these plants built.

  2. Robert Christopher

    And we still need to determine how much extra CO2 emissions affect regional climate, and whether we should believe any World Solution would work.
    During WWII, coal gas was used to power buses, so the technology is available!

  3. Peter Szemere

    The study use the 0,55 kg/kwh Co2 emission value of Germany… why? Why not with the EU average which is below 0,4kg or with France below 0,1kg???? Another paid study by lobbysts???

    1. Albert Stienstra

      That’s pretty clear. The Greens and their politicians don’t like Nuclear energy. We must use wind and solar, which don’t reduce CO2 emissions so much, as shown in Germany.

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