In addition to the technical upgrades carried out between 2010 and 2013, extensive ecological measures were also taken around the power plant: for example, seven near-natural islands with an area of 2,500 m2 were heaped up in the reservoir at the Zlatten weir and the banks of the headwater channel filled with rock. These measures offer new habitats for juvenile fish. In addition, the residual water flow of the Mur in the area of the power plant was increased.
The fish bypass at Pernegg power plant, which was built in 1996, was also improved in the form of a near-natural pond pass as part of the modernisation project. The existing ponds and ditches were connected to form a side channel in order to create additional habitat. The fish bypass is 350 metres long and bridges a height difference of 11.7 metres between the reservoir and the water below the weir.