| Other Installation / Fuel Type | Possible (yes/no) | Comment |
| Installations with higher electric output | Yes | Several of the above 1-4 engine plants can be combined to form a plant with a larger output. |
| Installations with higher heat output | Yes | The combustion systems can, at a relatively small added cost, be delivered with additional heat output. |
| Installations with outher fuel types | Not currently | Our installations have, until now, only been tested with wood chips. Although many other biomass types are expected to work without any problems, it has not yet been tested thoroughly. We can therefore not, without further testing programmes, offer commercial solutions with other fuel types. Possible problems include corrosion and disturbance to the system due to a high ash content and/or low ash melting temperatures causing the ash to melt onto the Stirling engine heater(s) |
| Waste heat applications | No | We have developed our engines specifically for high-temperature biomass combustion with a temperature between 1,000 and 1,300 C. We cannot drive the engines by low-temparature waste heat |
| Solar heat applications | No | The Stirling engines are developed for biomass combustion and are not suitable for solar heat applications. |
| Installations with smaller engines | No | The 35 kWe SD3-E engine is the only engine which is currently being offered commercially. A 9 kWe engine is under development but it is not currently being offered to the market. |
| Pyrolysator Intallations | Not currently | We are presently testing our first pyrolysator based application. We cannot offer such an installation until the testing has proved fully satisfactory operating performance. |
| Stand-alone Engines | No | Integration of the Stirling engine with a combustion system is highly complex due to strict requirements on fluegas temperatures, fluegas quantities, fluegas flows, control system issues, and safety issues. We therefore do not offer stand-alone engines to the market. We only offer such engines to selected combustion system manufactures. |
