Electrical Infrastructure Cost Model for Marine Energy Systems

Aryana Nakhai

Research output: NRELTechnical Report


The National Renewable Energy Laboratory's Electrical Infrastructure Cost Model is an Excel-based tool designed to estimate the electrical infrastructure costs of marine energy components and subsystems. It incorporates data collected from offshore wind projects, utility projects, and other relevant sources to provide accurate and comprehensive cost projections. With its user-friendly interface, the model allows users to input various parameters related to the system array, electrical cables, and substations. By leveraging industry data, cost trends, and technological advancements, the model generates outputs that include system array sizing, electrical cable specifications and costs, substation specifications and costs, and total electrical infrastructure costs. One of the notable strengths of the model is its flexibility in covering multiple-orders-of-magnitude scaled systems, accommodating projects ranging from proof-of-concept or pilot-scale installations to large-scale offshore systems. By collecting data largely from offshore wind reports and utility projects, the model incorporates real-world conditions and accounts for industry-specific factors. It incorporates cost trends and sizing relationships to deliver cost estimations for electrical infrastructure components, such as electrical cables and substation equipment.
Original languageAmerican English
Number of pages39
StatePublished - 2023

NREL Publication Number

  • NREL/TP-5700-87184


  • array cable
  • cost model
  • electrical infrastructure
  • export cable
  • fixed-bottom
  • floating
  • offshore
  • offshore wind
  • Powering the Blue Economy
  • riser cable
  • subsea cables
  • substation
  • techno-economic analysis
  • wave energy


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