If the Chinese EPC Financed Your Project, They Also Control Your Spare Parts Forever
Quote from chief_editor on June 3, 2026, 3:00 amChinese EPC financing arrangements create long-term spare parts and maintenance dependencies that were not visible at the time of the financing decision. The dependency is structural, not incidental.
The logic of EPC+F project financing from Chinese policy institutions appears straightforward at the project level: access to capital at below-market rates in exchange for using Chinese contractors and equipment. The financing cost saving is visible and can be modeled. What happens to the spare parts and maintenance relationship over the following twenty years is typically not modeled at the project financing stage.
A power plant in Sub-Saharan Africa financed through a China Exim Bank EPC+F arrangement in 2013 illustrates what that twenty-year relationship looks like in practice. The power plant's generating units were specified by the Chinese EPC contractor. The EPC contractor's equipment procurement relationships determined which Chinese manufacturers supplied the turbines, boilers, and balance of plant equipment.
By 2020, the plant operator's procurement team had identified that twelve of the plant's major equipment categories had parts supply chains that ran exclusively through the original EPC contractor or through manufacturers they designated. The parts were not technically proprietary in all cases -- some were standard industrial components that could theoretically be sourced from other suppliers. The practical barrier was that the plant's documentation did not include sufficient detail to specify equivalent components from alternative suppliers, because the documentation package delivered at handover was formatted for operation by personnel who could access the contractor's technical support system, not for independent engineering by the owner's team.
What Creates the Long-Term Parts Dependency
The long-term spare parts dependency in Chinese EPC+F projects is not primarily created by proprietary parts -- though proprietary parts exist and create their own dependency. It is primarily created by documentation gaps that make independent sourcing technically impossible without significant engineering work.
Three documentation gaps are most common. Equipment bills of materials that reference the EPC contractor's internal part numbers rather than the component manufacturer's part numbers prevent direct sourcing from the component manufacturer. Equipment that uses the EPC contractor's part number for a bearing, seal, or valve cannot be independently sourced without knowing which bearing manufacturer, what series, and what dimensional specification corresponds to the part number -- information that requires the EPC contractor's cooperation to obtain.
Technical drawings for wearing components that are provided in the EPC contractor's drawing format rather than in a format that allows independent manufacturing make competitive sourcing of replacement parts technically difficult. A wear part that can be manufactured by any competent machine shop if the drawing is complete cannot be manufactured if the drawing lacks tolerances, material specifications, or surface finish requirements.
Control system documentation that assumes access to the EPC contractor's SCADA platform for system modifications makes control system adaptation or upgrade dependent on the EPC contractor. A plant whose control system can only be modified by the contractor who installed it is operationally dependent on that contractor for any control modification, regardless of whether the hardware is proprietary.
The Documentation Requirements That Limit the Dependency
The documentation package that creates operational independence requires specification in the EPC contract before handover, not as a change request after operation has begun.
Equipment bills of materials must reference both the EPC contractor's part numbers and the component manufacturer's part numbers with sufficient specification detail to allow direct sourcing. This requires the EPC contractor to disclose their supply chain to the buyer -- a requirement that is commercially reasonable and should be specified in the contract as a handover deliverable.
Technical drawings for wearing and replacement parts must be complete to manufacturing specification level -- including dimensions, tolerances, material specification, and surface finish -- for all components that the owner is expected to procure during the operating life. This is a larger documentation effort than delivering operational drawings, which are what most EPC contracts specify.
Control system source code, license transfer, and platform documentation must be delivered as a handover condition, along with a training program that makes the owner's team capable of system modification without contractor support.
The power plant in Sub-Saharan Africa is seven years into a twenty-year operating life. The documentation gaps identified in 2020 will shape its operating cost structure for the remaining thirteen years. The financing rate saving was realized at closing. The dependency cost is being realized annually. Whether those two numbers balance over twenty years is a calculation that was not performed when the EPC+F financing was accepted.
Chinese EPC financing arrangements create long-term spare parts and maintenance dependencies that were not visible at the time of the financing decision. The dependency is structural, not incidental.
The logic of EPC+F project financing from Chinese policy institutions appears straightforward at the project level: access to capital at below-market rates in exchange for using Chinese contractors and equipment. The financing cost saving is visible and can be modeled. What happens to the spare parts and maintenance relationship over the following twenty years is typically not modeled at the project financing stage.
A power plant in Sub-Saharan Africa financed through a China Exim Bank EPC+F arrangement in 2013 illustrates what that twenty-year relationship looks like in practice. The power plant's generating units were specified by the Chinese EPC contractor. The EPC contractor's equipment procurement relationships determined which Chinese manufacturers supplied the turbines, boilers, and balance of plant equipment.
By 2020, the plant operator's procurement team had identified that twelve of the plant's major equipment categories had parts supply chains that ran exclusively through the original EPC contractor or through manufacturers they designated. The parts were not technically proprietary in all cases -- some were standard industrial components that could theoretically be sourced from other suppliers. The practical barrier was that the plant's documentation did not include sufficient detail to specify equivalent components from alternative suppliers, because the documentation package delivered at handover was formatted for operation by personnel who could access the contractor's technical support system, not for independent engineering by the owner's team.
What Creates the Long-Term Parts Dependency
The long-term spare parts dependency in Chinese EPC+F projects is not primarily created by proprietary parts -- though proprietary parts exist and create their own dependency. It is primarily created by documentation gaps that make independent sourcing technically impossible without significant engineering work.
Three documentation gaps are most common. Equipment bills of materials that reference the EPC contractor's internal part numbers rather than the component manufacturer's part numbers prevent direct sourcing from the component manufacturer. Equipment that uses the EPC contractor's part number for a bearing, seal, or valve cannot be independently sourced without knowing which bearing manufacturer, what series, and what dimensional specification corresponds to the part number -- information that requires the EPC contractor's cooperation to obtain.
Technical drawings for wearing components that are provided in the EPC contractor's drawing format rather than in a format that allows independent manufacturing make competitive sourcing of replacement parts technically difficult. A wear part that can be manufactured by any competent machine shop if the drawing is complete cannot be manufactured if the drawing lacks tolerances, material specifications, or surface finish requirements.
Control system documentation that assumes access to the EPC contractor's SCADA platform for system modifications makes control system adaptation or upgrade dependent on the EPC contractor. A plant whose control system can only be modified by the contractor who installed it is operationally dependent on that contractor for any control modification, regardless of whether the hardware is proprietary.
The Documentation Requirements That Limit the Dependency
The documentation package that creates operational independence requires specification in the EPC contract before handover, not as a change request after operation has begun.
Equipment bills of materials must reference both the EPC contractor's part numbers and the component manufacturer's part numbers with sufficient specification detail to allow direct sourcing. This requires the EPC contractor to disclose their supply chain to the buyer -- a requirement that is commercially reasonable and should be specified in the contract as a handover deliverable.
Technical drawings for wearing and replacement parts must be complete to manufacturing specification level -- including dimensions, tolerances, material specification, and surface finish -- for all components that the owner is expected to procure during the operating life. This is a larger documentation effort than delivering operational drawings, which are what most EPC contracts specify.
Control system source code, license transfer, and platform documentation must be delivered as a handover condition, along with a training program that makes the owner's team capable of system modification without contractor support.
The power plant in Sub-Saharan Africa is seven years into a twenty-year operating life. The documentation gaps identified in 2020 will shape its operating cost structure for the remaining thirteen years. The financing rate saving was realized at closing. The dependency cost is being realized annually. Whether those two numbers balance over twenty years is a calculation that was not performed when the EPC+F financing was accepted.