With the reoperation of Unit 1 in the Power Station Oberhavel on 6th January, 1996, was realized for the first time the control-engineering concept of connecting the control and observation system OM650 of the Teleperm-XP-Family to the automatization system AS220EA by Siemens for the operational control of a complete power station unit. An important feature of;this project was - besides the introduction of the very recent control engineering generation - the extremely short time far planning and realization.