A system for producing electricity includes a boiler unit which has a lens mounted thereon in a position to concentrate solar rays onto fluid contained in the boiler unit. A conduit system has an inlet end fluidically connected to the boiler unit to receive heated fluid therefrom and conduct the heated fluid to and through a turbine which produces electricity as a result of the heated fluid passing therethrough. The conduit system further fluidically connects an exit end of the turbine to a heat exchanger unit which contains a fluid that is heated by the fluid exhausted from the turbine. The fluid heated in the heat exchanger unit is conducted via the conduit system back to the turbine to assist the turbine in producing electricity.

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> Substituted porphyrins

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