Pioneering Percussion Driven Earth Anchors (PDEA®) for 40 Years

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Gravel Quarry, Waldsee, Speyer – Germany

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Project Overview

Floating Photovoltaic (FPV) systems are ideal for gravel extraction sites, allowing renewable energy production on water surfaces, which are typically unused.

Unrivaled in their versatility and ease of installation, in the most challenging environments, Platipus Percussion Driven Earth Anchors (PDEA®) were specified to secure a large Floating Photovoltaic (FPV) structure that was to be constructed on the Waldsee Lake, near Speyer, Germany.

Solution

This first phase of construction featured 2,527 pontoons, supporting 2,272 photovoltaic panels covering an area of approx. 8,000m2, plus 7 inverters. The installation was south facing, delivering a total output of 750 kWp. To safely secure the floating structures, a diving company installed a total of 40 Platipus B6 earth anchors with 4m long threaded rod into the lake bed. The earth anchors were locked in place using lifting balloons, proof tested to the required holding force, and finally connected to the FPV structure.

Both the earth anchors and the necessary installation equipment were prepared on a floating platform and launched into the water with the help of a crane. This enabled a simple and quick installation.

Finally, to ensure the safe and reliable operation of the system, the inverters and system monitoring were housed in a container on land.

Floating Solar secured with earth anchors

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