Power produced by steam turbine

For approximately adiabatic reversible operation of the turbine, the variation of enthalpy per mole of gas passing through the turbine is given by $$dh=C_pdT=vdP=frac{RT}{P}dP$$. This integrates to $$frac{T_{out}}{T_{in}}=left(frac{P_{in}}{P_{out}}right)^{frac{(gamma-1)}{gamma}}$$From this it follows that the power delivered per mole of air passing through the turbine is given by $$dot{p}=C_p(T_{in}-T_{out})=C_pT_{in}left[1-left(frac{P_{out}}{P_{in}}right)^{frac{(gamma-1)}{gamma}}right]$$So the higher $T_{in}$ and $P_{in}$, the higher the power delivered per mole of air.