Detailed engineering, manufacturing, delivery, installation, testing and commissioning of a 100 kWth circulating fluidized bed (CFB) pilot plant and an attached heat recovery steam generator (HRSG). The CFB shall be capable of combustion, gasification and other reaction modes using different feedstocks and the process gases specified in the technical documentation. The HRSG, located downstream of the CFB, shall operate as a once-through unit for steam generation and hot-gas cooling. The HRSG shall be designed and manufactured in accordance with PED 2014/68/EU using Module G conformity assessment. Detailed technical requirements, operating conditions, preliminary designs and CAD models are provided in the technical annexes of the Call for Tender. The selected tenderer may display its company name on the delivered CFB and HRSG test rigs.