Using photovoltaic cells, the Air Tree produces a substantial amount of energy, which is then sold back to the local electric companies, the profits being used for maintenance of the structure.

空气树通过光伏电池产生巨大的能量，这些电将输送回当地的电力公司，而由此产生的利润将用于该建筑的维护。

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Auctioneers Swindells said the structure had been sold to a "venture partnership" in excess of the guide price, but provided no further details.

BBC: Cleethorpes Pier sold at auction

The beauty of the structure is that the insurance is sold only on a rolling six-month basis.

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When cost structure is maintained almost all the revenue drops to the bottom line beyond the cost of goods sold.

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