The consortium of Topsoe Fuel Cell A/S and Risø National Laboratory has scaled up its production capacity of anode-supported cells to about 1100 per week. The consortium has an extended program to develop the SOFC technology all the way to a marketable product. Standard stacks have been tested for more than 13 000 h. Post-mortem analysis has revealed the dominating degradation mechanisms. Recently, the degradation rate has been reduced to below 0.5% per 1000 h by introduction of improved stack component materials, including improved metallic interconnects. Several 50- or 75-cell stacks in the 1 kWe and above power range have been tested successfully on methane-rich reformate gas at a fuel utilization up to 92%. Stack and system modeling – including cost optimization analysis – is used to develop 5–25 kWe stack modules for operation in the 700–850°C temperature range. A special effort is focused on manufacturing and testing of larger anode-supported cells and stacks with a footprint of 18 × 18 cm2. The SOFC program comprises the development of next-generation cells with metallic supports for operation at lower temperature with increased durability, lower cost, and high mechanical robustness. A range of fuels have been studied including natural gas, LPG, methanol, DME, diesel and ammonia. A multi-stack design study for a 24-stack module prototype has been finalized, and stack construction is under way for a 20 kWe prototype running on natural gas. The studies predict system electrical efficiencies from 50% to 56% (AC out/LHV fuel in) depending on the fuel used and the size of the system.