Battery Energy Storage System (BESS)

Maju Antara is the appointed EPCC partner for turnkey BESS installation in Malaysia, supplying and commissioning a commercial & industrial grade, all-in-one liquid-cooled energy storage cabinet designed for peak shaving, demand management, and energy cost reduction.

1 kWh

Storage per cabinet

1 kW

Rated output power

All-in-one liquid-cooled ESS cabinet 125kW/261kWh

Our all-in-one liquid-cooled ESS cabinet features advanced pack-level liquid cooling that maintains cell temperature differences within 3°C — extending battery life and improving round-trip efficiency. The modular design enables flexible parallel configuration from a single 125kW/261kWh unit up to a full array exceeding 1.5MWh, making it ideal for C&I applications across Malaysia.

1 kWh

System storage capacity

1 kW

Rated AC output power

1 +

Cycle life (LFP cells)

Up to 1 %

TNB MD cost reduction

1 %

Max round-trip efficiency

IP 1

Ingress protection

DC Side
Cell Type	LFP 314Ah — Tier 1 manufacturer
Pack Config	52.2 kWh / 1P52S
System Config	261 kWh / 1P260S
Rated DC Voltage	832 V
DC Voltage Range	728 – 936 V
Charge / Discharge	0.5P rate
AC Side
Rated Output Power	125 kW (Max 137 kW)
Rated AC Voltage	400 V / 3W+N+PE
Power Factor	0.99 / −1 to +1
THDi	≤ 3%

All-in-one Liquid-cooled ESS Cabinet 125kW/261kWh

Full technical specification

GENERAL
Round-trip Efficiency	≥ 90%
Charge / Discharge Rate	0.5C
DoD	95% (25±2°C)
Cycle Life	≥ 8,000 cycles (25±2°C, 0.5P, 95% DoD)
SOC Accuracy	< 3%
Nominal Frequency	50Hz / 60Hz
Communication	Ethernet / RS485 / Modbus TCP
Ingress Rating	IP55
PHYSICAL
Cooling	Active liquid cooling
Operating Temperature	–25°C to 55°C
Humidity	5–95% RH (non-condensing)
Noise	≤ 75 dB
Elevation	≤ 2,000 m (derating above 2,000 m)
Dimensions (W×D×H)	1,050 × 1,350 × 2,400 mm
Weight	2,600 kg
SAFETY
Fire Safety	Aerosol fire suppression system
Fire Standard	UL9540A — highest conformity
Safety / EMC	UN38.3 · IEC62477-1 · IEC61000 · IEC62619 · IEC63056 · EN50549
WARRANTY
Battery Cell Warranty	Up to 10 years — Top 5 & Tier 1 cell manufacturer

Key Features

Why our liquid-cooled ESS cabinet

Compact all-in-one design

Only 1.4m² footprint. PCS, BMS, and EMS fully integrated into a single cabinet — minimal civil works, fast site installation, and lower total project cost.

Top 5 & Tier 1 LFP cells

Using only the top 5 globally ranked Tier 1 LFP battery cell manufacturers — guaranteeing cell quality, consistency, and up to 10 years of cell warranty.

Pack-level liquid cooling

Advanced in-pack liquid cooling maintains cell temperature variation within 3°C — superior performance versus air-cooled alternatives in Malaysia's tropical climate.

Modular & scalable design

1–6 cabinets per array (max 12 cabinets / 4 arrays) — scale from 125kW/261kWh up to 750kW/1,560kWh without any system redesign.

Highest fire safety standard

Complete fire suppression system with UL9540A conformity — the industry's highest fire standard. Aerosol in-pack suppression prevents heat diffusion and thermal runaway.

Full integration ready

Ethernet / RS485 / Modbus TCP connectivity enables seamless integration with EMS platforms, SCADA systems, and AI demand optimisers including EasiEMS Pro.

Single-Site C&I Deployment

System Architecture

The MASB ESS cabinet integrates with utility grid, PV solar, and cloud EMS. Battery charges during off-peak hours; discharges automatically when demand approaches the MD ceiling.

Peak shaving

Peak shaving: BESS discharges to cap grid draw below MD ceiling

Tariff arbitrage

Charge off-peak, discharge during peak tariff windows

Backup power

Maintains critical load supply during grid outages or demand events

Solar self-consumption

Stores excess PV generation; releases during evening peak demand periods

Use Cases

Applications Across Commercial & Industrial Sectors

Manufacturing & industrial parks

Peak shave Maximum Demand charges on TNB bills. Ideal for factories with high machinery startup loads and variable shift patterns. BESS charges during off-peak hours and discharges during peak tariff windows — directly reducing the highest kW recorded each month.

Commercial buildings & malls

Solve feeder upgrade limitations without costly infrastructure works. BESS handles EV charging demand spikes, HVAC peak loads, and demand response participation — while protecting the grid connection from overload events.

Data centres & critical facilities

Replace traditional lead-acid UPS systems with higher-safety LFP BESS. Provides backup power, smooths renewable energy fluctuations, and enables participation in power market reserves — improving reliability and asset utilisation.

Solar PV + BESS hybrid microgrid

Pair rooftop solar with BESS to maximise self-consumption. Store excess PV generation during daylight and discharge during evening peak demand — enabling near-zero grid draw during TNB peak tariff hours and accelerating solar ROI.

EPCC Scope

What Maju Antara delivers — end to end

As the appointed EPCC partner, Maju Antara manages the complete project lifecycle — from site feasibility through to long-term maintenance — backed by 45+ years of industrial engineering experience.

Site feasibility study, load profile analysis & BESS sizing calculation based on client TNB bills and peak demand data

Engineering design — single-line diagram, protection coordination, civil foundation drawings & cable routing

Supply, delivery & installation of BESS cabinet(s) and all associated electrical equipment

Earthing, protection system, busbar connections & integration with existing main switch board (MSB)

System testing, pre-commissioning checks & full commissioning with performance verification

Regulatory submission and approval — JKKP, CIDB & TNB interconnection requirements as applicable

Training for client’s operations team on safe operation, monitoring dashboard & alarm response procedures

Ongoing preventive maintenance, remote monitoring & in-house service support throughout system lifecycle

A BESS without AI is just a battery.

With Tanand's EasiEMS Pro, it becomes a measurable savings engine.

Hardware alone does not guarantee savings. Our ESS cabinet stores and releases energy efficiently — but without intelligent demand prediction, a static discharge strategy will miss peaks, drain the battery at the wrong time, and leave your TNB Maximum Demand unchanged. For measurable, contractable ROI, the BESS must be paired with an AI-driven EMS that predicts demand before TNB records it.

Why static BESS strategies underperform

A fixed-threshold discharge reacts after a demand spike has occurred — TNB records your Maximum Demand at the moment of the spike, not when the battery kicks in. Variable industrial loads make it impossible to set one threshold that works across all shift patterns, weekdays, and seasonal changes. The result: the battery discharges at the wrong time, leaving it empty when the real peak arrives.

How Tanand EasiEMS Pro solves this

EasiEMS Pro's neural network ingests 90–180 days of historical load data, real-time sub-metering readings, and production schedules to predict Maximum Demand up to 30 minutes ahead. Dynamic setpoints update every 15 minutes to balance the MD ceiling, battery SoC, depth of discharge, and recharge windows — ensuring the battery is always ready when needed most.

Recommendation from Maju Antara

Maju Antara strongly recommends coupling every BESS installation with Tanand Technology’s EasiEMS Pro AI BESS Optimizer.
Hardware EPCC (Maju Antara) + AI software (Tanand) delivers up to 30% TNB Maximum Demand reduction with measurable guarantee — achieving ROI within 3.5 years.
Without AI optimisation, realistic MD savings are typically 10–15% at best.

The Complete Solution

Two partners — one measurable outcome

Savings potential by MD reduction level

MD Reduction	Monthly Saving	Annual Saving	10-Year Value
100 kW	RM 9,861	RM 118,332	RM 1.18M
200 kW	RM 19,722	RM 236,664	RM 2.37M
300 kW	RM 29,583	RM 354,996	RM 3.55M
400 kW	RM 39,444	RM 473,328	RM 4.73M
500 kW	RM 49,305	RM 591,660	RM 5.92M

Based on TNB tariff RM98.61/kW (Capacity + Network charges) · Actual results may vary by site

Ready to install BESS for your facility?

Contact Maju Antara for a site feasibility study and savings estimate based on your TNB bills.

Request a site assessment

Send us your last 3 months TNB bills and load profiles.
Maju Antara will size the BESS system and
provide a full EPCC proposal.

www.majuantara.com.my / +60 16-934 6838

Learn about Tanand EasiEMS Pro

Ask us about coupling your BESS with
Tanand Technology’s AI demand optimizer
to achieve up to 40% MD reduction with
a performance guarantee.

Battery Energy Storage System (BESS)

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