Large emissions from the electric car batteries

Huge hopes tied to electric cars as the solution to the automotive climate problem. But the electric car batteries are eco-villains in the production. Several tons of carbon dioxide has been placed, even before the batteries leave the factory.

IVL Swedish Environmental Research Institute was commissioned by the Swedish Transport Administration and the Swedish Energy Agency investigated lithium ion batteries climate impact from a life cycle perspective. There are batteries designed for electric vehicles included in the study. The two authors Lisbeth Dahllöf and Mia Romare has done a meta-study that is reviewed and compiled existing studies.

The report shows that the battery manufacturing leads to high emissions. For every kilowatt-hour of storage capacity in the battery generated emissions of 150 to 200 kilos of carbon dioxide already in the factory. The researchers did not study individual bilmärkens batteries, how these produced or the electricity mix they use. But if we understand the great importance of play battery take an example: Two common electric cars on the market, the Nissan Leaf and the Tesla Model S, the batteries about 30 kWh and 100 kWh.

Even when buying the car has thus emissions occurred, corresponding to approximately 5.3 tons and 17.5 tons, the batteries of these sizes. The numbers can be difficult to relate to. As a comparison, a trip for one person round trip from Stockholm to New York by air causes the release of more than 600 kilograms of carbon dioxide, according to the UN Organization ICAO calculation.

Another conclusion of the study is that about half the emissions arising from the production of raw materials and half the production of the battery factory. The mining accounts for only a small proportion of between 10-20 percent.

This article is written by JOHAN KRISTENSSON and is translated from Swedish. Read more...