CRRC Zhuzhou Institute

CESS-L6250-EU-0.5C/0.25C

Grid-ScaleDC BlockContainerized

Updated Aug 14, 2026

Grid-ScaleDC BlockContainerizedUpdated Aug 14, 2026

CRRC Zhuzhou Institute CESS-L6250-EU-0.5C/0.25C is an LFP battery energy storage system supplied as a DC block with 6.25 MWh nominal energy in 2 and 4 hour configurations. It uses liquid cooling and 287 Ah prismatic cells. System weight is 48 tonnes (105,822 lb).

Use Cases

CRRC Zhuzhou Institute CESS-L6250-EU-0.5C/0.25C has nominal energy in the utility-scale size class. Its supported protocols include IEC104 and IEC61850. These specifications indicate use in front of the meter.

Capabilities

CRRC Zhuzhou Institute CESS-L6250-EU-0.5C/0.25C lists configurations up to 4 h. That 4 h listing points to energy shifting, charging at one time and discharging hours later; the specifications suggest capacity value, standing in as firm capacity when demand peaks. Its DC block connects through a separate inverter. That configuration makes it a candidate for renewable colocation, sitting next to a wind or solar plant and sharing its grid connection. Its shortest listed configuration is 2 h, which points to peak shaving, discharging into the hours of highest demand; the specifications indicate grid services, work that helps keep the electricity network running.

Nominal energy

6.25MWh

Duration

2–4flexible

C / P rate

0.25–0.5C

What does this system typically cost?

BESSBASE.com user price estimates for CESS-L6250-EU-0.5C/0.25C by CRRC Zhuzhou Institute and similar storage systems. The ranges are LDP (Landed Duty Paid) prices per kWh that cover all expenses of delivering the goods to the buyer's premises, including production, shipping, sales margins, and import duties.

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Energy & Power

Nominal energy
6.25MWh
Duration
2–4 hourflexible
C / P rate
0.25–0.5 C

Architecture

Installation
Outdoor-capable

DC Side

DC voltage range
1,081.6 – 1,497.6 V

AC Side

Physical & Footprint

Dimensions (W × D × H)
6,058 × 2,438 × 2,896mm
Weight
48t

Battery Cells

Chemistry
LFP
Cell capacity
287 Ah
Cell format
Prismatic
Cell supplier
Hithium

Lifespan

Protection

Enclosure protection
IP55
Fire & safety
Fire alarm panel, heat and smoke detection, alarm bell and strobe, Aerosol-based suppression system, Flooded fire protection systems

Full Specification Sheet

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Plant Round-Trip Efficiency

Duration
duration 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 acres16.3 m² / MWh175 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
6.25 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 CRRC Zhuzhou Institute Systems

16
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CRRC Zhuzhou Institute33.3MWh16.67MWAC2h0.5CLFP
CRRC Zhuzhou Institute6.9MWh—2h0.5CLFP287 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L6250-EU-0.5C/0.25CDC Block
6.25MWh—2–4h0.5–0.25C · flexLFP287 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L5016-EU-0.5CDC Block · 20 ft container
5.02MWh—2h0.5CLFP314 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L5016-US-0.25CDC Block · 20 ft container
5.02MWh—4h0.25CLFP314 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L5016-EU-0.25CDC Block · 20 ft container
5.02MWh—4h0.25CLFP314 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L5016-STR-0.5CDC Block · 20 ft container
5.02MWh—2h0.5CLFP314 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L5016-STR-0.25CDC Block · 20 ft container
5.02MWh—4h0.25CLFP314 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L5016-US-0.5CDC Block · 20 ft container
5.02MWh—2h0.5CLFP314 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L3727-US-0.5CDC Block · 20 ft container
3.73MWh—2h0.5CLFP280 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L3727-EU-0.5CDC Block · 20 ft container
3.73MWh—2h0.5CLFP280 Ah · Prismatic
CRRC Zhuzhou Institute
CESS-L3450-EU-0.5CDC Block · 10 ft container
3.45MWh—2h0.5CLFP287 Ah · Prismatic

About the Vendor

CRRC Zhuzhou InstituteTier-1Listed Company

Founded in 1959 and based in Zhuzhou, Hunan, CRRC Zhuzhou Institute began as the Ministry of Railways’ Zhuzhou Electric Locomotive Research Institute. It is now a wholly owned CRRC subsidiary that makes integrated energy storage systems for grid use, and its battery container projects total more than 1 GWh, including 6.25 MWh systems in high renewable regions of northwest China.

Production scale20+ GWh
Company sizeMajor (10000+)
Vertical integrationMedium
BankabilityOverall Positive

How to Read the Product Page

This profile of CESS-L6250-EU-0.5C/0.25C by CRRC Zhuzhou Institute 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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