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Energiebranche: Electricity network not prepared for the spread of electric cars

Saturday, August 19th, 2017 | bitcoin updates

    
        
            
        
        
    
    
    
              The federal government is expecting an EU quota for electric cars – but the moaning German electricity network is not prepared for a massive spread of e-mobiles. Especially in the autolands of Bavaria and Baden-Wuerttemberg it could be narrow.
            
            
            
                    
            The electricity network in the autonomous regions of Bavaria and Baden-Württemberg is not prepared for the expected distribution of electric cars and heat pumps. The energy industry assumes that in the future significantly higher load peaks will occur than before, the associations for energy and water management in the two economically strong federal states state. At the same time, the amount of electricity produced in southern Germany is declining. The four transmission network operators expect the grid development calculations to show that electricity production in the south will be significantly lower than the demand for the last nuclear power plant.
The energy sector in the south does not expect demand to fall – on the contrary: "We expect the demand for electricity to rise, especially if Bavaria remains a strong industrial location," said Detlef Fischer, Managing Director of the Bavarian Energy and Electricity Association Water Management (VBEW). This is mainly due to two factors: electrically driven heat pumps and electromobility. These would lead to "significantly higher peak loads on the ground than we currently have," says Torsten Höck, Managing Director of the sister company VfEW in Baden-Württemberg.
Maximum load is almost more significant
The power supply companies think of both: available power and peak load. "We are also thinking about the amount of electricity, which is not entirely without, especially when the latest nuclear power stations are off the grid," said Höck. "The question of the maximum load, however, is almost the most important topic locally, but at the same time we have a trend towards self-sufficiency, and in the future we will have both days and hours with low as well as higher peak loads."
In Bavaria as well as in Baden-Württemberg, nuclear power plants covered about half of the electricity demand in 2011 until the nuclear disaster in Fukushima. The nuclear current will be missing from the turn of the year 2022/23. However, the planned direct current high-voltage lines from north and east Germany to the south will be finished by 2025 at the earliest.
South needs to import electricity
Bavaria and Baden-Württemberg want to be a pioneer in electromobility. The car manufacturers Daimler, BMW and Audi invest billions in electric cars. However, the Energiewende has an unfortunate consequence for the southern German industry: according to the current grid development plan, Southern Germany will in the future have to import between a quarter and half of the electricity requirements from other federal states or abroad. In Northern Germany, on the other hand, according to the network development plan, electricity production could more than double the demand.
The demand for peak power is crucial in terms of the load on the electricity grid. "If all seven million cars in Bavaria were driven electrically, we would have a 20 to 25 percent higher power requirement," says VBEW CEO Fischer.
Even an extreme scenario: "If all Bavarian households had an electric car and all at the same time drive to the inductive loading plate with 11 kW, we would need a power of 77 gigawatts," says the electrician. This would be a multiple of the currently highest power requirement in Bavaria of 12.5 gigawatts. "This is not going to happen, says Fischer -" because the batteries become bigger and therefore all vehicles will not load every evening ". The example, however, shows the dimension of the task "electromobility".
No problems after switching off nuclear power plants
In the normal case, the power specialists do not expect any problems with the power supply after the shutdown of the last nuclear power plant Isar II. "But the redundancies we had earlier have become less, there is less air in the system," says Fischer. Misfortunes are always a chain of unfortunate circumstances. "What happens when we have extremely low temperatures, no wind blows, the sun does not shine, and at the same time power stations or power lines fail?" I do not put my hand into the fire. "
Fischer, therefore, considers electricity shortages to be impossible on some days: "I do not expect regular blackouts, but you may have to arrange some days, you have to consume less electricity now Will work. " (Dpa) /

(Db)

        

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