Advanced Natural Gas Combined Cycle Power Plant
Electricity Production Costs Report | Issue D | Q4 2024
| Report Details |
| 3,500 GWh/y United States-based plant | Q4 2024 | 107 pages |
This report presents a cost analysis of a 3,500 GWh/y (GWh per year) United States-based plant. You can add a customized cost analysis, assuming another location (country), when ordering a premium edition of this report.
Report Abstract
This study also provides a techno-economic analysis about Electricity generation from natural gas in the USA. In this study, high efficiency H-class combustion turbines (CT) supplemented with heat recovery steam generators (HRSG) and steam turbines (ST) are employed to Electricity generation.
The report provides a comprehensive study of Electricity production and related Electricity production cost, covering three key aspects: a complete description of the Electricity production process examined; an in-depth analysis of the related Electricity plant capital cost (Capex); and an evaluation of the respective Electricity plant operating costs (Opex).
The Electricity production process description includes a block flow diagram (BFD), an overview of the industrial site installations, detailing both the process unit and the necessary infrastructure, process consumption figures and comprehensive process flow diagrams (PFD). The Electricity plant capital cost analysis breaks down the Capex by plant cost (i.e., ISBL, OSBL and Contingency); owner's cost; working capital; and costs incurred during industrial plant commissioning and start-up. The Electricity plant operating costs analysis covers operating expenses, including variable costs like raw materials and utilities, and fixed costs such as maintenance, labor, and depreciation.
Process Schematic
The process under analysis comprises two thermodynamic cycles: (1) Brayton Cycle; and (2) Rankine Cycle.
Brayton Cycle. In the Brayton cycle, first air is compressed and mixed with natural gas in a mixing chamber. The mixture is then ignited in an expansion cylinder and energy is released. High pressure hot gas from combustion expands through a turbine, spinning rotating blades connected to a shaft, thus generating power. In the case of the process approached in this report, the shaft is connected to a generator of electricity.
Rankine Cycle. The waste heat from the gas turbine exhaust is used in a boiler to evaporate high pressure water, forming high pressure dry saturated steam, which expands through a steam turbine, generating electricity. The steam expansion decreases its temperature and pressure, which may cause some condensation. The wet low pressure steam is then condensed at a constant pressure to become saturated water that will be reused in the cycle. This thermodynamic cycle is called Rankine Cycle.
The use of the heat released in the Brayton Cycle as energy to generate the high pressure steam in the Rankine Cycle increases the total energy extracted from the natural gas. This entire process is also called Brayton-Rankine combined cycle.
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Production Costs Datasheet
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Production Process Information
Process Consumptions
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Plant Capital Cost Summary
Operating Cost Summary
Production Costs Datasheet
Plant Capital Cost Details
Operating Cost Details
Plant Cost Breakdowns
Plant Capacity Assessment
Process Flow Diagrams
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Content Highlights
Plant Capital Cost Summary
Summary outlining the capital cost required for building the Electricity production plant examined
Plant Capital Cost Details
Detailing of fixed capital (ISBL, OSBL & Owner’s Cost), working capital and additional capital requirements
Plant Cost Breakdowns
Breakdown of Electricity process unit (ISBL) costs and infrastructure (OSBL) costs; plant cost breakdown per discipline
Operating Costs Summary
Summary presenting the operating variable costs and the total operating cost of the Electricity production plant studied
Operating Cost Details
Detailing of utilities costs, operating fixed costs and depreciation
Plant Capacity Assessment
Comparative analysis of capital investment and operating costs for different Electricity plant capacities
Production Process Information
Block Flow Diagram, descriptions of process unit (ISBL) and site infrastructure (OSBL)
Process Consumptions
Raw materials and utilities consumption figures, by-products credits, labor requirements
Process Diagrams
Process flow diagrams (PFD), equipment list and industrial site configuration
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