Het is zelfs niet CO2 neutraal te noemen ?
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With diabatic storage, the extra heat is removed from the air with inter coolers following compression (thus approaching isothermal compression), and is dissipated into the atmosphere as waste. Upon removal from storage, the air must be re-heated (usually in a natural gas fired burner for utility grade storage or with a heated metal mass for large Uninterruptible Power Supplies) prior to expansion in the turbine to power a generator. The heat discarded in the intercoolers degrades efficiency, but the system is simpler than the adiabatic one, and thus far is the only system which has been implemented commercially. The McIntosh CAES plant requires 0.69kWh of electricity and 1.17kWh of gas for each 1.0kWh of electrical output [2](a non-CAES natural gas plant can be up to 60% efficient therefore uses 1.67kWh of gas per kWh generated).
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