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BMW i8 and i3 electric cars
BMW i8 and i3 electric cars
Andre Tauber

BERLIN — BMW plans to introduce its electric i3 car this year, which raises the question of what’s going to happen to the old batteries that, for the purpose of powering electric cars, must be discarded well before they have actually been depleted. It’s a riddle the car company is hoping to solve together with the question of how to store surplus renewable energy.

The maker of “the ultimate driving machine” says that one of the goals when it comes to old batteries is to use them in electric car charging stations or in solar panels. The company is working with the electricity company Vattenfall to research how that could be possible and practical.

The move toward more renewable energy sources over the past several years has led to a situation where there is too much energy available on sunny days, and not enough storage capacity. The same problem exists for wind energy.

In the future, the old batteries from electric cars could be used to store the electricity from wind and solar installations.

The effort could be worth it for green energy producers. Using the old batteries this way would mean an ability to charge higher prices because they would be storing it for times when demand is high but supply is low.

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FOCUS: Russia-Ukraine War

Kharkiv Revisited: Inside Russia's New Assault On The "Hero City" Of Ukraine

The nation's second-largest city, Kharkiv was quiet for weeks after Ukrainian forces took control. But now it is again under attack as Russia pushes to capture the city that's considered the "gateway" to Ukraine. Die Welt reports from the frontline.

Damages due to Russian shelling in Kharkiv, Ukraine

Alfred Hackensberger

KHARKIV — "Come, I want to show you something," Denys Vezenych says, opening the door of his dental office.

The 40-year-old begins to tell the story in the waiting room: "It was April 16 when the Russian artillery shell hit. The windowpanes were broken, the walls had holes everywhere and the roof was destroyed. But I renovated everything."

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The repairs cost him several thousand euros. "You have to think positively, because life goes on," he explains with a smile. But this attitude is not so present generally in Saltivka, a neighborhood in northeastern Kharkiv. The dental practice may be like new, but the rest of this area in the northeastern Ukrainian city is completely destroyed.

The Russian army has done a great job in its three-month offensive on Ukraine's second largest metropolis. Countless flats have been burned out, the facades of houses have been shot to pieces, entire shopping centers have been bombed. Debris still lie in the streets everywhere.

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Central to the tragic absurdity of this war is the question of language. Vladimir Putin has repeated that protecting ethnic Russians and the Russian-speaking populations of Ukraine was a driving motivation for his invasion.

Yet one month on, a quick look at the map shows that many of the worst-hit cities are those where Russian is the predominant language: Kharkiv, Odesa, Kherson.

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