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Voltage rise due to renewable energies

Cause:

In conventional power grids, energy flows in a centralised way from the power plant via transformers to the consumers. Along this path, the voltage naturally drops slightly. Due to the many decentralised solar and wind power plants, electricity nowadays often flows in the opposite direction.
On sunny or windy days, many decentralised systems feed high power into the low-voltage grid (400 V / 230 V) at the same time. This leads to an increase in grid voltage, particularly in sections of the network close to the local distribution transformer.

This is how the Renecost system reduces the voltage rise caused by renewable energies.

Problem:

While the standard (DIN EN 60038) allows fluctuations of ±10 %, a permanently increased voltage is associated with significant disadvantages. The consequences for connected electrical devices are:
  • Increased wear: motors and power supplies overheat and their service life is reduced.
  • Higher energy consumption: resistance-based loads (e.g. heaters) draw more power at higher voltage and thus consume more electricity.
  • Increased risk of failure: critical overvoltage can damage or destroy electronic components.
Solution:
The Renecost system actively stabilises the grid voltage and reduces it to a demand-oriented, protective level. The result: you only pay for the electricity you actually need while at the same time protecting your electrical equipment from damage caused by overvoltage.

We are always ready to help you and answer your questions.

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