Quantifying the hurricane catastrophe risk to offshore wind power

Area of Science:

• Environmental science
• Renewable energy engineering
• Climate risk assessment

Background:

• The U.S. Department of Energy estimates over 50 GW of offshore wind power is needed for 20% electricity generation.
• Planned offshore wind farms are located in hurricane-prone regions along the U.S. Atlantic and Gulf coasts.
• Assessing catastrophe risk is crucial for the development of offshore wind energy infrastructure.

Purpose of the Study:

• To develop and apply a method for estimating catastrophe risk to offshore wind power from hurricanes.
• To quantify the fraction of offshore wind power simultaneously offline and cumulative damage from hurricane events.
• To evaluate risks to individual wind farms and identify mitigation strategies.

Main Methods:

• Utilized simulated hurricanes to model potential impacts on offshore wind power.
• Estimated simultaneous power outages and cumulative damage in vulnerable regions.
• Assessed risks for single wind farms in four representative locations.

Main Results:

• In Texas, a 100-year return period hurricane could cause 10% of offshore wind power to be simultaneously offline.
• A 10-year period could see 6% of offshore wind power destroyed in Texas due to hurricanes.
• Risks to single wind farms were found to be significant but lower than previously published estimates.

Conclusions:

• Hurricane damage poses a considerable risk to offshore wind power development in the U.S.
• Mitigation strategies include designing turbines for higher wind speeds and improving nacelle maneuverability.
• Strategic site selection in lower-risk areas can significantly reduce potential hurricane impacts.