Meeting our technical objectives may prove valuable to NASA scientists involved with the Advanced Stirling Project and/or the Alpha-STREAM project. This proposal fits in well with the Space Power Initiatives, specifically, S3.03 Power Generation and Conversion. The commercial markets for this game changing technology are estimated to be quite large, indeed, provided of course that EAP Stirling engines can come down substantially in price, while achieving the 40% or greater efficiency target. It has been long recognized by NASA that a highly efficient free piston Stirling engine would be useful in many planned space missions. Thus, SFST is motivated and committed to help NASA explore space, while also helping to offset carbon footprints and greenhouse emissions though the development of this renewable energy power source.