The invention was developed at the University of Manchester. It represented a unique hybrid of a solar generator and a windmill, attached to a regular flag.
Although the invention has been officially completed and patented, it does not yet present any practical value, and is only interesting in terms of engineering. The flag doesn’t demonstrate a high enough level of productivity to generate a significant amount of energy, but the rapid advancement of science might change that, and we might see these flags everywhere in the future.
The flags are made out of flexible piezoelectric strips and solar batteries instead of fabric. This contributes to a lightweight design, allowing the flag to fly in the wind, thus generating additional energy. The device only works under calm weather conditions.
The flags can generate up to 3-4 MWt of energy during daylight hours with average wind. Of particular interest is the fact that this type of flag is made up of two entirely different technologies. This might be the start of a new era of green energy.
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