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Oils, Fuels, Gases and Lubricants 

Author:  | Environment, Massachusetts, Technology

Table 3.3.1-2. Summary of Maximum Potential Volumes, Oils, Fuels, Gas and Lubricants for the Onshore Converter Station

Onshore Converter Station Equipment/System Oil/Fuel/Gas Type Total Oil/Fuel/Gas Volume
(2) High-Voltage Shunt Reactor (fixed) Mineral Oil Dielectric Fluid 26,640 gallons (gal) (100,844 liters [L])
(2) High-Voltage Shunt Reactor (variable) Mineral Oil Dielectric Fluid 37,000 gal (140,060 L)
(4) 345/275-kV Grid Transformers Mineral Oil Dielectric Fluid 37,693 gal (107,014 L)
Gas-Insulated Switchgear Bay Sulfur Hexafluoride (SF₆) 3,500 lbs

Table 3.3.6-2. Summary of Maximum Potential Volumes Oils, Fuels, Gases and Lubricants for Offshore Converter Station

Equipment Oil/Fuel/Gas Type Oil/Fuel/Gas Volume
Transformers and Reactors Transformer Oil 105,700 gal (400,000 L)
Generator fuel tank Diesel Fuel 24,304 gal (92,000 L)
Medium and High-Voltage Gas-Insulated Switchgears Sulfur Hexafluoride (SF₆) 3,960 lbs (1,796 kg)
Crane Hydraulic Oil 528 gal (2,000 L)

Crane* Grease TBD
Rotating Equipment* Lube Oil TBD
Auxiliary Diesel Generator Lube Oil 53 gal (200 L)
Seawater Lift Pumps Lube Oil 119 gal (450 L)
Auxiliary Inert Gas System High-Pressure Nitrogen 52,834 gal (200,000 L), at 300 bar
Auxiliary Diesel Generator Fire Suppression System* Inert Gas TBD
Auxiliary Transformers Synthetic Ester Oil 3,170 gal (12,000 L)
Chiller units Refrigerant HFO1234ze(E) 40 gal (150 L)
Compressed Air Foam System* Foam Concentrate TBD
Uninterruptible Power Supply Battery* Battery Acid TBD
Cooling Medium System Glycol/Water Mix 7,925 gal (30,000 L)
Chilled Water Medium System Glycol/Water Mix 5,283 gal (20,000 L)
*The volumes listed as “TBD” are pending further engineering and will be provided when the design is further progressed.

Table 3.3.8-2. Summary of Maximum Potential Volumes Oils, Fuels, Gases and Lubricants per wind turbine generator

System/Component Oil/Fuel/Gas Type Oil/Fuel/Gas Volume
WTG Bearings and Yaw Pinions Grease* 132 gal (500 L)
Hydraulic Pumping Unit, Hydraulic Pitch Actuators, Hydraulic Pitch Accumulators Hydraulic Oil 159 gal (600 L)
Yaw Drives Gearbox Gear Oil 79 gal (300 L)
Blades and Generator Accumulators Nitrogen 104 cubic yd (80 m³)
High-Voltage Transformer Transformer Silicon/Ester Oil 1,850 gal (7,000 L)
Emergency Generator† Diesel Fuel 793 gal (3,000 L)
Tower Damper and Cooling System Glycol/Coolants 3,434 gal (13,000 L)

*Approximately 26 gal to 40 gal (100 L to 150 L) per large bearing.
†Emergency generator is not housed on the WTG but would be brought to the WTG during commissioning or in an emergency power outage.

Submitted to the Bureau of Ocean Energy Management
August 19, 2022

Download original document: “Sunrise Wind Farm Project: Construction and Operations Plan

This material is the work of the author(s) indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

The copyright of this material resides with the author(s). As part of its noncommercial educational effort to present the environmental, social, scientific, and economic issues of large-scale wind power development to a global audience seeking such information, National Wind Watch endeavors to observe “fair use” as provided for in section 107 of U.S. Copyright Law and similar “fair dealing” provisions of the copyright laws of other nations. Queries e-mail.

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