Carbon capture and storage (CCS) from carbon fueled processes seems to be the key mid-term strategy to limit the carbon dioxide concentration in the atmosphere. Chemical looping is proposed as a combustion technology (CLC) with inherent CO2 separation and as a hydrogen production process using reforming (CLR). The potential of chemical looping technology is the low energy penalty for CO2 capture. This study focuses on the implementation of chemical looping into a power-, and a hydrogen production process in the scale of 10 MW fuel power. The aim is to show achievable efficiencies and optimization potentials of such systems in order to allow the evaluation of the competitiveness of chemical looping technology.