IA-125kW/500kWh

Name: IA-125kW/500kWh
Brand: WHES

Industrial & CommercialAC Block

Updated Aug 15, 2026

Industrial & CommercialAC BlockUpdated Aug 15, 2026

WHES IA-125kW/500kWh is an LFP battery energy storage system for commercial and industrial use, supplied as an AC block. It provides 500 kWh nominal energy in 2, 4, 6 and 8 hour configurations, uses air or liquid cooling, and contains 306 Ah prismatic cells. It weighs 4.5 tonnes (9,921 lb).

Use Cases

WHES IA-125kW/500kWh has nominal energy in the commercial and industrial size class. It connects at 400 V through a low-voltage AC connection. These specifications indicate use behind the meter.

Capabilities

Its longest listed configuration is 8 h, which points to capacity value, being counted on as supply when the network is tight. In WHES IA-125kW/500kWh, the AC block includes the inverter, and the specifications suggest renewable colocation, operating alongside a wind or solar plant on one site. The shortest listed configuration, at 2 h, makes it a candidate for peak shaving, discharging into the hours of highest demand.

Nominal energy

0.5MWh

Rated AC power

0.13MW

Duration

2–8flexible

What does this system typically cost?

BESSBASE.com user price estimates for IA-125kW/500kWh by WHES 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.

Sign up to see and submit price estimates.

BESSBASE.com users can privately compare and submit prices for IA-125kW/500kWh by WHES and similar systems across 20+ international markets.

Energy & Power

Nominal energy

0.5MWh

Rated AC power

0.13MW

Duration

2–8 hourflexible

Architecture

Installation

Outdoor-capable

DC Side

Nominal DC voltage

832 V

DC voltage range

728 – 936 V

AC Side

AC voltage

400 V

AC voltage parameters

3/N/PE

AC voltage range

360 - 440 V

Rated AC current

180.4 A

Grid frequency

50 Hz / 60 Hz

Physical & Footprint

Weight

4.5t

Battery Cells

Chemistry

LFP

Cell capacity

306 Ah

Cell format

Prismatic

Cell supplier

CATL

Lifespan

Protection

Enclosure protection

IP55

Corrosion protection

Fire & safety

Smoke Detector, Heat Detector, Alarm Sounder, Aerosol, Sprinkler

Full Specification Sheet

Members

The rest of this spec sheet is for members

3 more specification blocks on this product. Create a free account to see every field on every product.

You stay on this page — it fills in as soon as you are signed in.

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.

More WHES Systems

Vendor	System	Energy	Power	Duration	Battery Cell
WHES	IA-1488kW/2980kWh-DA10AC Block · 20 ft container	2.98MWh	1.49MWAC	4hflex	LFP280 Ah · Prismatic
WHES	IA-744 kW/2980 kWh-DA10AC Block · 20 ft container	2.98MWh	0.74MWAC	4hflex	LFP280 Ah · Prismatic
WHES	IA-1302 kW/2600kWh-DA10AC Block · 20 ft container	2.61MWh	1.3MWAC	4hflex	LFP280 Ah · Prismatic
WHES	IA-1116 kW/2230kWh-DA10AC Block · 20 ft container	2.24MWh	1.12MWAC	4hflex	LFP280 Ah · Prismatic
WHES	IA-930 kW/1860kWh-DA10AC Block · 20 ft container	1.86MWh	0.93MWAC	4hflex	LFP280 Ah · Prismatic
WHES	IA-744 kW/1490kWh-DA10AC Block · 20 ft container	1.49MWh	0.74MWAC	4hflex	LFP280 Ah · Prismatic
WHES	IA-125kW/500kWhAC Block · cabinet	0.5MWh	0.13MWAC	2–8hflex	LFP306 Ah · Prismatic
WHES	IA-62.5kW/500kWhAC Block · cabinet	0.5MWh	0.06MWAC	2–8hflex	LFP306 Ah · Prismatic
WHES	IA-187kW/500kWhAC Block · cabinet	0.5MWh	0.19MWAC	2–8hflex	LFP306 Ah · Prismatic
WHES	IA-250kW/500kWhAC Block · cabinet	0.5MWh	0.25MWAC	2–8hflex	LFP306 Ah · Prismatic
WHES	WH-TIANWU-100-233BAC Block · cabinet	0.23MWh	0.1MWAC	—	LFP280 Ah · Prismatic
WHES	IA-40kW/100kWh-EC10AC Block · cabinet	0.1MWh	0.04MWAC	—	LFP280 Ah · Prismatic

View all 15 WHES systems

About the Vendor

WHESTier-1Private Company

WHES is based in Wuxi, China, with European headquarters in Amsterdam and regional hubs in Serbia and Melbourne. It has more than 16 years of R&D in battery energy storage, has delivered more than 800 projects in over 50 countries across residential, commercial and industrial, and utility-scale markets, and pairs CATL battery modules with its WHES OS energy management platform.

Production scale0.2-1 GWh

Company sizeLarge (1000-10000)

Vertical integrationMedium

BankabilityNeutral

View the full WHES profile →

How to Read the Product Page

This profile of IA-125kW/500kWh by WHES 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.