[PAR_WIG1350]

sounds like a job for a scaled up solar engine, but that would require some considerably large capacitor banks, and I'm not even sure information on such a high powered version of the circuit exists since I've only seen them used in really small applications. Alternatively, one could try solar-thermal with a steam or hot air turbine or a Stirling engine, the panels are replaced by large curved mirrors or lenses that focus the light onto a point that one wishes to heat. Depending on how it is done, this might be a possible solution, but it could also be worse.