I am attempting to find the value of the "capital expenditure of a conventional natural gas combustion turbine power plant in the United States in 2022," but I usually encounter data for combined-cycle gas turbine plants instead.
Natural gas plants are now all combined-cycle (to increase efficiency). When they're not, they also use other fossil fuels. "Capital expenditure" depends on many factors and therefore varies from plant to plant.
You can only estimate the cost and have an idea of the order of magnitude of the costs.
As you surely know, the typical simple-cycle efficiency is 33-40% at maximum load and drops significantly at partial load.
The efficiency of a combined-cycle gas power plant will vary with the size and type of turbine selected, but it tends to increase with the size of the turbine. It is 50-63% (PP onshore).
Why do you want to evaluate the costs of a type of system that is no longer used? It's like wanting to evaluate the costs of a coal-fired locomotive...
But that's just my point of view (obviously).
Michele Raucci thank you for answer. I am looking exactly CAPEX value for 2022 year, for example, from paper or report.
I found this document
https://www.eia.gov/analysis/studies/powerplants/capitalcost/pdf/capital_cost_AEO2020.pdf
but it refers to 2020. I noticed that, in fact, we are only talking about combined cycle gas plants. If I'm not mistaken, CAPEX refers to the construction of new plants. So what's the point of talking about CAPEX for old gas plants?
Perhaps that is why the data you are looking for cannot be found.
In the case of old gas plants, the term OPEX (Operational Expenditure) is commonly used to refer to the ongoing operational and maintenance costs of the facility. OPEX includes expenses such as fuel costs, personnel wages, maintenance, and repairs. Therefore, when discussing the financial aspects of existing gas plants, it would be more appropriate to consider OPEX rather than CAPEX.
Do you think my observation is correct?
I don't know if it can help you:
https://www.statista.com/statistics/243704/capital-costs-of-a-typical-us-gas-turbine-power-plant/
According to this document, costs will decrease (to 703 $/kWh).
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