SubCtech System / Package

Energy Storage System (ESS)

Model Battery Storage Skid (BSS), Power Skid (PS), Diagnosis & Charge Unit (DCU)

MWh-scale subsea Li-ion energy storage system for offshore applications, designed for deployments of up to 25 years.

Description

SubCtech's Energy Storage System (ESS) is a high-performance Li-ion system for offshore subsea applications, designed for deployments of up to 25 years. It typically serves as a backup energy source for offshore applications with high energy demand (>1 MWh) and at oil & gas production facilities. Batteries are API17F qualified and certified to UN T38.3; DNV ST-E273 is also cited.

Key features

Battery Storage Skid (BSS): 12 battery modules of 93 kWh each (>1 MWh), scalable to 6 skids / 6 MWh
BSS 2500 x 3200 x 4800 mm (HxWxL) @ 23 tons in air; super duplex steel or titanium frame
Design depth 2000 m, up to 6000 m possible
DC bus 189 ... 291 V, nominal 252 V
Power Skid (PS) with Output Power Module for AC/DC conversion to the user's subsea system
Diagnosis & Charge Unit (DCU) in a 10' ISO container, charging up to 170 kW

Applications

Subsea backup power at offshore oil & gas production facilities and other high-energy subsea installations.

Specifications

Energy per BSM	93 kWh
Skid energy	>1 MWh (12 BSM); scalable up to 6 MWh
DC voltage bus	189 ... 291 V, nominal 252 V
Charge	170 kW, 70 A DC input
BSS dimensions	2500 mm x 3200 mm x 4800 mm (HxWxL) @ 23 tons in air
Design depth	2000 m, up to 6000m possible

Variable Speed ID Plater

Variable-speed drive with polypropylene flow chamber for plating inside diameters, conducting plating current up to 150 amp.

Equipment

Pine Hill Equipment

Bow and Stern Thrusters

Full line of hydraulic (5 to 160 HP, 200 to 4,000 lb thrust) and electric (5 to 14 HP, 125 to 550 lb thrust) bow and stern thrusters in aluminum or bronze finish.

System / Package

Reagan Power & Compression

Reciprocating Compressor Packages

Engine or motor driven reciprocating natural gas compressor packages built to customer specifications with Ariel and Siemens compressors.