Solar: There are several types of off the shelf solar thermal energy collectors on the market that could be used with this engine.
However, they are all much too expensive, but should they become cheaper, other collectors could be used.
The preferred collectors used are much more cost effective
and can form the basis for the structural panel of a building or
trailer, thus hide the costs within construction.
They can be
seen through and allow open building designs without a lot of drywall on
exterior walls. On old buildings, they overlay the wood or tin on a
roof, or can be used in existing windows.
Every window can become a solar collector...
Windmills: Instead of having the heavy electric motor up in the
tower, a part of the engine is placed in the tower and fluid flows down
the pole and to another motor that drives the electric motor housed on
the ground. There is, therefore, no need for a transmission between the propeller and electric motor as is common in windmill systems.
Transmissions in current turbines are more
costly than the earnings from the grid according to some estimates.
The engine allows the torque to flow into small energy stores and delivered when needed to the electric motor, thus smoothing out the spike in will mill power that causes so many problems.
Thermal: The engine is thermal at it's core and can do cooling and heating, which is what most applications are after other than lighting. It can also work well with geothermal and can work on small temperature differences found in geo.