EPC (engineering, procurement and construction)
turnkey contract · EPC contractor
EPC is a contract under which one company designs a power plant, buys its equipment, builds it and hands it over.
EPC stands for Engineering, Procurement and Construction. The owner signs with a single EPC company, which takes responsibility for the whole build.
In a renewable project the developer puts the project together and the EPC company actually builds it. Running and repairing the finished plant is usually left to a separate O&M company.