Firefly Floating Wind Farm

Wind Project Site

Title: Firefly Floating Wind Farm

Status:

Planned

Project Manager:

Equinor

Foundation Manufacturer:

Technip Energies

Website:

External Link

Construction Start:

January 1, 2025

Info Last Updated:

September 12, 2023

Contact:

Info
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Details

Technology:

Floating Offshore Wind

Project Scale:

Commercial Farm

Turbine Model:

Wind Semi

Hub Height:

139 m

Rotor Diameter:

236 m

Number of Turbines:

Capacity per Turbine:

15 MW

Installed Capacity:

750 MW

Support Structure:

Semi-Taut Mooring, Semi-Submersible, Suction Anchor

Export Cables:

Export Cable Voltage:

230 kV

Number of Export Cables:

Cable Landfall:

Other

Physical Site:

Deep Water (>60m), Lake, Hard-Bottom Habitat

Water Depth:

15-36 m

Distance from Shore:

70 km

Country:

Korea South

Description

The Firefly (Bandibuli) Floating Offshore Wind Farm project is being developed by Equinor as part of the Ulsan floating offshore wind farm. The Firefly Offshore Wind Farm will cover approximately 160 km² and will have a total installed capacity of 750 MW.

Location

The Firefly Floating Offshore Wind Farm is located 70 km off the coast of Ulsan with the nearest port being the Port of Ulsan. The two export cables will have a landfall point at Onsan (Southern Ulsan).

Licensing Information

December 2021: Equinor obtained the electric business licence (EBL) from the Korean authorities.

Project Timeline

2030: Anticipated operations
2027: Anticipated offshore construction
2025: Anticipated onshore construction
2024: Anticipated final ESIA report publication
2023: Anticipated final EIA report submittal
2023: Anticipated scoping report for Environmental and Social Impact Assessment and stakeholder engagement plan publication
2023: Anticipated EIA public hearing
2023: Conducted Offshore Cultural Heritage Investigation
2022: Conducted Fishery damage impact assessment
2022: Submitted EIA scoping report, Draft EIA report, conducted Information session of EIA
2022: Site Investigations (environmental impact statement: ex. Marine Sediment and Ecosystem, Underwater noise, Seabird, and Mammal, etc.), Geophysical Survey (by Geoview), and Front End Engineering esign (FEED) Study
2021: Maritime Traffic Safety Examination, Radar Impact Assessment
2021: Project Memorandums of Understanding (MOUs) signed
2020: LiDAR 1 and 2 installed

Key Environmental Issues

In December 2021, Equinor started surveys to collect data for the Environmental Impact Assessment (EIA), which are undertaken to ensure any potential significant environmental effects that may arise because of the construction and operation of the Firefly Offshore Wind Project, are properly understood.

The surveys will be conducted initially over a 12-month period and will include: marine mammals, seabirds, seawater and sediment quality, marine ecology, fish, marine physics, underwater noise, etc. Sekwang Engineering Co. Ltd., has been appointed by Equinor to manage the surveys which will be undertaken by specialist subcontractors. The surveys will be conducted in the offshore wind turbine array area as well as the proposed cable route to shore and onshore.

Receptor	Design and Methods	Results	Publications	Data
Birds	Bird Surveys The status of the terrestrial ecosystem (flora, vegetation, fauna, inland water organisms, migratory birds, legally protected species, etc.) at the Firefly Floating Offshore Wind Farm project site and surrounding areas (within 0.5km radius) will be surveyed. A review of the bird movement and habitat changes due to the installation of structures will be conducted. Starting in 2022, the survey vessel will undertake seabird and marine mammal survey works along with the Firefly offshore wind farm areas and export cable route in Ulsan and coastal areas.	Ongoing Results pending	Equinor south Korea Corp Ltd 2022	No data publicly available.
Marine Mammals	Field Surveys A four-season field survey will be conducted at the Firefly Floating Offshore Wind Farm project site and surrounding areas (within a 0.5km radius) to identify the habitats of marine animals and plants (animal and phytoplankton, fish roe and fingerling, sub-tidal benthic animals, intertidal benthic animals, fish and aquatic resources, marine mammals, etc.). Quantitative methods will be used to predict the impact and extent of impact on the ecosystem due to the spread of suspended sediment during the project.	Ongoing Results pending	Equinor south Korea Corp Ltd 2022	No data publicly available.
Physical Environment	Air Quality Air quality around the Firefly Floating Offshore Wind Farm project area will be analyzed. Pollutant production will be calculated, and concentration will be predicted via a diffusion model (scattered dust, etc.).	Planned Results pending	Equinor south Korea Corp Ltd 2022	No data publicly available.
Physical Environment	Soil Pollution The status of soil pollution around the Firefly Floating Offshore Wind Farm project area will be checked. Soil pollution due to soil spill and obstacle removal will be predicted.	Planned Results pending	Equinor south Korea Corp Ltd 2022	No data publicly available.
Physical Environment	Water Quality & Sediment Surveys A four-season field survey will be conducted at the Firefly Floating Offshore Wind Farm project site and surrounding areas (within a 0.5km radius) to assess the status of sea water quality, sea bottom quality, and marine physics (tide, wave, continuous tidal current, continuous suspended sediment, distribution of spatial suspended sediment, marine bottom material survey). Starting in 2022, the survey vessel undertook sea water and sediment survey works along with the Firefly offshore wind farm areas and export cable route in Ulsan offshore and coastal areas. Numerical model experiments will be used to predict the impact on the marine environment.	Ongoing Results pending	Equinor south Korea Corp Ltd 2022	No data publicly available.
Reptiles	Reptile Survey Starting in 2023, the survey vessel undertook reptile survey works along the Firefly offshore wind farm areas and export cable route in Ulsan offshore and coastal areas.	Ongoing Results pending	Equinor south Korea Corp Ltd 2022	No data publicly available.
Fish, Marine Mammals, Reptiles	Underwater Noise Monitoring A four-season field survey will be conducted at the Firefly Floating Offshore Wind Farm project site and surrounding areas (within a 0.5km radius) to assess the sources of noise and vibration, survey the status of noise and vibration and underwater noise. Starting in 2022, the survey vessel undertook underwater noise and acoustic monitoring survey works along the Firefly offshore wind farm areas and export cable routes in Ulsan offshore and coastal areas. Predictions on the impact of construction equipment operation as well as the impact of power generation facilities during operation will be made. Composite noise calculation and point sound source distance attenuation formulas will be applied.	Ongoing Results pending	Equinor south Korea Corp Ltd 2022	No data publicly available.