Unlike conventional condensing applications, geothermal steam is laden with considerable quantities of non condensable gases (NCG). The percentage of non-condensible gases in the turbine exhaust steam can be as high as 25%. The large percentage of non-condensible gases poses a unique challenge to the condenser design because the non-condensables act to inhibit the condensing process. Optimal performance is achieved by incorporating adequate flow areas inside the shell, proper design of the steam lanes, efficient collection of non condensable gases in strategically located air cooling zones with minimal pressure drop and maximum subcooling, an accurate estimate of the heat transfer coefficient with appropriate consideration for the effect of non condensable gases. Holtec's punctuated degassing technology (patent applied for) improves the thermal performance of the geothermal condenser by mitigating the detractive effect of non-condensables on the condenser's thermal performance. Reliability is ensured by proper material selection, a mechanical design oriented to withstand the corrosive effects of geothermal steam and a sound quality and inspection plan.