How does energy transform during solar power process

The energy from the sun is transform during solar power process. The Sun gives off a energy which reflects off the earth like a reflection that creates powers. 

Tolerance to high levels of salinity

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.