From a quick google, steam turbines cost about 50% more than gas turbines.[1][2] Gas is $500-700/kW, steam is $670-1140/kW. That's easily compensated by the hi

From a quick google, steam turbines cost about 50% more than gas turbines.[1][2] Gas is $500-700/kW, steam is $670-1140/kW. That's easily compensated by the higher capacity factor of non-storage applications (since storage turbines, calculated above, cost 100% more per kWh due to idle time). Also, storage has to add the cost of the electrolyzer and ammonia storage tanks. On top of that, round-trip efficiency of energy storage via ammonia is only about 30%.[3] So if your solar farm costs $20/MWh, your cost of stored energy is over $60/MWh before accounting for turbine/electrolyzer costs. This means you can easily be competitive with a steam turbine plus a heat source that costs $60/MWh, at least for baseload. [1] https://www.greentechmedia.com/articles/read/ges-new-gas-turbines-are-state-of-the-art-but-are-we-getting-too-cozy-with https://www.greentechmedia.com/articles/read/ges-new-gas-tur... [2] pdf: https://www.energy.gov/sites/prod/files/2016/09/f33/CHP-Steam%20Turbine.pdf https://www.energy.gov/sites/prod/files/2016/09/f33/CHP-Stea... [3] https://www.ammoniaenergy.org/articles/round-trip-efficiency-of-ammonia-as-a-renewable-energy-transportation-media/ https://www.ammoniaenergy.org/articles/round-trip-efficiency...