Samsung SDI

SBB 1.5

Grid-ScaleDC BlockContainerized

Updated Aug 28, 2026

Grid-ScaleDC BlockContainerizedUpdated Aug 28, 2026

Samsung SDI SBB 1.5 is a containerized NCA battery energy storage system for utility-scale use. It provides 5.259 MWh nominal energy and 2.63 MW rated DC power as a DC block. The unit uses liquid cooling and 145 Ah prismatic cells, and weighs 40 tonnes (88,185 lb).

Use Cases

The Samsung SDI SBB 1.5 has an energy capacity within the utility-scale range. That specification points to use in front of the meter on the utility's side of the connection.

Capabilities

Samsung SDI SBB 1.5 holds about 2 h of storage at full power, calculated from 5.259 MWh and 2.63 MW. That configuration points to capacity value, standing in as firm capacity when demand peaks. Its DC block connects through a separate inverter. For it, the specifications suggest renewable colocation, operating alongside a wind or solar plant on one site. That configuration makes Samsung SDI SBB 1.5 a candidate for peak shaving, discharging into the hours of highest demand, and the specifications indicate grid services, support that helps operators run the electricity network.

Nominal energy

5.26MWh

Rated DC power

2.63MW

What does this system typically cost?

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Energy & Power

Nominal energy
5.26MWh
Rated DC power
2.63MW

Architecture

DC Side

DC voltage range
1,091 – 1,460 V

AC Side

Physical & Footprint

Dimensions (W × D × H)
6,058 × 2,438 × 2,896mm
Weight
40t

Battery Cells

Chemistry
NCA
Cell capacity
145 Ah
Cell format
Prismatic
Cell supplier
Samsung SDI (in-house)

Lifespan

Protection

Fire & safety
Smoke Detector, Gas Detector, Deflagration Panel, Alarm, Emergency Switch, Active Venting, HVAC, Chiller Drain Valve, Folding Door

Full Specification Sheet

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Plant Round-Trip Efficiency

Duration
energy ÷ power 2 h
0.5C
—
State of health
new system
as-new
—
DC block
typical @2 h
round trip @ 2 h
94 %
PCS (DC/AC)
typical default
each way
97.02 %
Transformer LV/MV
typical default
each way
98.01 %
Transformer MV/HV
typical default
each way
98.01 %
Cables (all segments)
typical default
each way
98.8 %
Auxiliary power (plant's own consumption)
typical default
−4.3 pts
Plant Round-Trip Efficiency at the Point of Interconnection
82.2 %
40 %100 %
1.216MWh charged for every 1 MWh discharged
Both measured at the grid connection point. The plant's own power use is already included in the losses.

The calculator estimates the full "plant" round-trip efficiency (RTE) at the point of interconnection. Some values are pre-blocked depending on information on a particular ESS. The rows that are marked "each way" are one-way efficiencies; they are applied on charge and again on discharge. We then square them. To enter a bundled PCS efficiency value, use its rated-power value, not peak. If the PCS skid already includes the LV/MV transformer, set Transformer LV/MV to 100 % so those losses are not counted twice.

Site Space Required

single unit clearance 3 m / side
101.7m² total site area · 1 × 1
1,095 ft²0.0102 ha0.025 acres19.3 m² / MWh208 ft² / MWh
Unit W × D
6.06 × 2.44 m
19.88 × 8 ft
Site envelope
12.06 × 8.44 m
39.56 × 27.68 ft
Per unit
101.7 m²
Installed energy
5.26 MWh
1 × nameplate
Units1
Per row1
Clearance between unitsShared

Shared: one 3 m aisle serves both neighbours. Dedicated: each unit keeps its own 3 m, so gaps double to 6 m.

Clearance allowance
6m per axis · 3 m per side
19.69 ft per axis · 9.84 ft per side

Single unit — matches the stored area_sqm convention.

More Samsung SDI Systems

2
CompareLogoVendorSystemEnergyPowerDurationBattery CellOpen
Samsung SDI
SBB 1.5DC Block
5.26MWh2.63MWDC—NCA145 Ah · Prismatic
Samsung SDI
SBB 1.0DC Block
3.84MWh1.92MWDC—NCA145 Ah · Prismatic

About the Vendor

Samsung SDITier-2Listed Company

Samsung SDI started in 1970 as Samsung-NEC. Based in Yongin, South Korea, it makes secondary batteries for energy storage systems and sells containerized Battery Box products, including the NCA-based SBB 1.7 and LFP-based SBB 2.0, plans to start US BESS production in 2026, and signed a three-year US LFP ESS cell supply deal worth more than KRW 2 trillion.

Production scale20+ GWh
Company sizeMajor (10000+)
Vertical integrationHigh
BankabilityNeutral

How to Read the Product Page

This profile of SBB 1.5 by Samsung SDI is assembled exclusively from public data to support early-stage screening and requires additional due diligence.

Always confirm these terms and technical specifications directly with the vendor and project stakeholders. Reflect all agreed-upon details in the legal agreements before making any investment decisions.

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