A short time after May 5, 1966, when the power plant unit had been commissioned, it reached the designed parameters and was mostly run in base load generation.
Until its decommissioning on June 1, 1990 it was connected to the grid for more than 130 000 hours. It achieved an annual average availability of 61.3 % on average. The total gross output (from 1966 to 1990) was about 9 000 GWh.
The exploitation of nuclear fuel was around 14 MWd/kg uranium on average. The measures of maintenance and reconstruction, mostly realized by own staff, and the material tests, especially in the area of the primary circuit including the reactor, made it possible to gain many experiences which are also important for the decommissioning of a nuclear power plant.
During the commissioning and right after that, the scientific and technical issues demanded the creation of a special field of research. New solutions were developed there, for example for the decontamination of the primary circuit, for the reactor-physical monitoring of the reactor core or for the tightness test of fuel elements. This know-how could also be used for the operation of the units in the Greifswald NPP. It was worked on a number of research issues with international support.