Is it worth it?: A mini wind power plant on the roof actually produces that much electricity
Electricity has become more expensive, so it makes sense to want to produce the electricity yourself. But does that also work with a small wind turbine on the roof? We show what the consumer solutions are good for and whether they are an alternative to photovoltaics.
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With a 24 percent share, wind power is an important part of the power supply in Germany. In addition to the large systems, as with solar panels, there are also smaller solutions that you as a consumer can use: so-called small wind turbines.
But what are these products actually good for? Is such a mini wind turbine on the roof even worth it? And why do you rarely see such systems in this country? Here you’re informed of everything important.
The most important thing for private users is whether the installation of such a system is financially worthwhile. The consumer center NRW comes to the conclusion: no. It’s currently not worth it.
As an example with a normally suitable location of the house:
- Rotor diameter: 1 meter
- Rotor area: 0.8 m²
- Yield per year: ~100 kWh
This would save you around 33 euros if you use all of the electricity for your own use. This compares to an annual consumption of between 2,500 and 4,000 per normal single-family household.
By the way: If the diameter is doubled, the yield is quadrupled. Depending on the location and quality of the small wind turbine, the yield can also be lower.
What speaks against small wind turbines?
It is not only the comparatively low yield that deters citizens from purchasing such a system. The acquisition costs are also significantly higher compared to solar cells.
Other arguments against having your own wind power plant are currently:
- susceptibility to maintenance
- humming noises and vibrations possible
- Production in small numbers
- building permit may be required for mounting on a mast
This shows that the small systems are currently not attractive for most consumers.
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The original of this article “A mini wind power plant on the roof actually produces this much electricity” comes from chip.de.
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