Simon
We are using both steam reciprocating engines and steam turbines depending on the heat output required. Below 500Kwe we use engines and above turbines. The two Bellis & Morcom engines in my avater produce 300Kwe each and we are just purchasing two more Browett Lindley engines and generators of a similar size as well as an Allen Turbine of 1500Kwe.
Wow, serious power generation. Will you be able to benefit from the new FITs regime assuming you could find the appropriate section to squeeze into? When you get some more technical details of your set up, particularly your solar evac tube oil heating arrangements, I and many others, no doubt, would love to hear from you.
Are you, by any chance, off grid on a Scottish island?
Good luck,
Simon