Explain how an infrastructure project is financed and managed from development through operation, and what debt and equity each contribute

Development (permits, design, bidding) is the riskiest phase and is equity-funded. Construction, under fixed-price contracts but still exposed to overruns, uses construction loans. Ramp-up and operation bring stable brownfield cash flows, followed by refinancing and, under a concession, eventual handback. Projects usually sit in a special-purpose vehicle financed with non-recourse debt secured on project cash flows. Debt is sized by the debt service coverage ratio = cash flow available for debt service ÷ debt service. Equity takes the first loss, holds control and receives the residual, while debt earns a contractual return. Once construction risk has passed, refinancing on cheaper terms lifts equity returns. The trap: a level of leverage suited to an operating asset is too high during construction.