Sauerlacher is annoyed by the throttling of its solar system

Sauerlacher is annoyed by the throttling of its solar system
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of: Laura Mayu

“Everyone is talking about an energy crisis, and then my system will shut down?”: Joseph Kastenmüller can only use 70 percent of his solar system’s output. It is currently still regulated by law, completely incomprehensible to the 72-year-old. © Laura Mayu

Sauerlacher’s Josef Kastenmüller is outraged that he is not allowed to fully exploit the performance of his photovoltaic system. After 70 percent it is over. This is currently required by law.

sour salmon -Joseph Kastenmüller sits in his garden, puts his feet in the pool and looks at his PV system on the roof. “We are short of energy, why does 30 percent of electricity disappear here?” The 72-year-old asks, which means limiting his photovoltaic system to 70 percent of his output.

90 modules on the house and garage roof

The guy from Sauerlach has been building his own PV system since 2016. Today he has about 90 modules on the roof of his house and garage – and he would like to make the most of them. “Why not produce more and more electricity? The sun keeps shining anyway. ,

“The question is completely legitimate,” says Christian Martens, a spokesman for Bayernworks Network. But: “If we ramp up all systems to 100 percent, there will be a network overload.” It makes no sense financially and technically. Josef Kastenmüller has no understanding for this argument and asks himself: “What about the electricity I don’t use and don’t put into the grid?”

Video: Photovoltaics – functions and advantages of a system

PV systems shut down automatically – owners angry

Bayernwerk spokesman Martens responded that it was not even produced in the first place. “It’s not about electricity produced that isn’t remunerated – electricity isn’t produced in the first place.” PV systems automatically shut down when they reach 70 percent of their capacity. This only happens under optimal conditions. “The final summit is rarely reached.”

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Still, Kastenmüller is angry that the potential of his PV system is not being fully exploited. Especially with the ongoing energy crisis and skyrocketing prices, they wonder why their clean solar power is not needed. Energy companies like Bayernwerke or Eon are only out for maximum profit, not for society’s optimum energy supply.

Renewable Energy Sources Act (EEG) in transition

The Renewable Energy Sources Act (EEG) has its origins in the Electricity Feed-in Act of 1991 and is Central political control element for the expansion of renewable energy – To regulate feed-in of renewable energy and ensure grid stability, among other things. The law also regulates and guarantees fixed feed-in tariffs for producers. The current version of the law, EEG 2021, was passed by the Black-Red coalition in late 2020. Among other things, it sees a PV system output limit of 70 percent so that the network is not overloaded. The limit does not mean that 30 percent of the power is lost, but limits the system’s maximum output to 30 percent. Depending on the estimate, different sources and orientations of plants pass through the boundary Up to five percent of the annual electricity yield is lost, As per paragraph 9 of EEG 2021, any person who owns his own PV system can choose between two options: either throttling up to 70 percent at maximum effective output or agreeing to remote control by the grid operator If their grid is going to be overloaded.

With EEG 2023, the traffic light alliance now has one as part of the Easter package amendment of law Launch – Only the Federal President has to sign the draft. By 2030, renewable energy 80 percent of gross electricity consumption, In addition to several adjustments, the feed-in tariff will increase from 6.24 cents to 8.2 cents. In addition, the 70 per cent rule will no longer be applicable from January 1, 2023, for new PV systems with an output of up to 25 kW.

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Electricity from PV Systems: Storage is Expensive and Not Profitable

Bayernwerk spokesman Martens disagrees. Even if you give maximum power, only about five percent more power will come out. From their point of view, tip shaving is therefore a sensible solution. Production and consumption of electricity must be in balance. Storing the electricity produced at peak moments is expensive and not profitable.

By the way: Everything in the area is also available in our regular District Munich Newsletter,

In addition: Operators of PV systems can choose between automatic throttling (the 70 percent rule) and a remote control system, which remotely shuts down private systems in the event of grid overload. However, private individuals will have to bear the expenses themselves.

Despite the explanation, Josef Kastenmüller lacks the understanding that his system only shuts down on a sunny day as well as the energy crisis everyone is talking about. With the BR format “Now Red Eye” he has already approached Prime Minister Marcus Söder (CSU) with his request.

Power throttling is toggled

The rule is no longer being overturned by the Traffic Light Coalition, not from Bavaria, but from Berlin. With the Renewable Energy Sources Act (EEG) 2023, the federal government will eliminate the 70 percent cap regulation for new systems with effect from January 1, 2023. For existing plants, the rule is to be removed in the next EEG revision. So Joseph Kastenmüller’s wish will come true. Still he is not satisfied. “We need electricity now – not next year,” says Sorlkar, whose current systems will not be affected by innovation at the moment. He doesn’t want to believe anything anymore, he doesn’t trust politicians.

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problem for Bayernwerke

The new EEG 2023 has a direct impact on Bayernwerke. On the one hand, the energy company will now have to prepare its network for 100 percent performance over the long term. However, in the short term, it could also reduce the number of connected systems, explains spokesman Martens. “Our network needs to be able to deliver the maximum possible performance.

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