Why SSSP (Small-Scale Steam Power)?
The following gives a brief description of why SSSP should be expected to be interesting as future prime mover

2.1 Fuel flexibility
Like the Stirling engine the SSSP has external combustion and offers great fuel flexibility compared to the ICE and GT and the fuel cell. SSSP is also expected to offer advantages when harnessing solar energy in solar thermal power application. The multi fuel possibilities make it possible to use locally available energy (solar, bio fuel) and realise autonomous distributed off-grid power system.

2.2 Exhaust gas and noise emission
The exhaust gas emission has a potential to be very low. Due to the absence of preheat or pre-compression of the combustion air, the combustion temperature will be lower than for other power cycles which imply lower NOx emission. NOx emission will almost be eliminated without any catalytic conversion. By coating the steam generator surfaces with an oxidation catalytic layer other emissions such as CO and HC can be reduced in a cost effective way. The SSSP has also a potential to be very silent and vibration free power source, and hence offer an environmentally friendly power source that can be placed close to people in mobile applications as
well as in buildings.