PRODUCTS / BESS

EOM I 1045 – 500 kWh

C&I BESS cabinet

Plug-and-play installation

  • 1000 kWh usable
  • 500 kW AC
  • liquid-cooled LFP
  • VDE-AR-N 4105 / 4110 certified
  • IP55 battery cabinet
  • ≥ 88% Round-trip efficiency
Download datasheet
Monbat Energy battery energy storage container

Technical Specifications

Below, you will find the detailed technical specifications for the Battery Energy Storage System (BESS) EOM I 1045.

Cabinet General

Protection class
Battery cabins IP55, electronic cabin IP33
Operating ambient temperature
–20 °C to +50 °C
Operating humidity
0–95% RH
Operating altitude
< 3,000 m
Ventilation
Fan ventilation
Energy management
Open source EMS platform
Wiring
3L / N / PE — suitable for TN-C-S systems
Dimensions (W × L × H), product
6,096 x 2,600 x 2,591 mm or customizable
Cabinet weight
< 20.0 t
Communication
Modbus-RTU / Modbus-TCP (internal and external)
Round-trip efficiency
≥ 88%
Fire safety system
Aerosol fire suppression, remote warning system via controller

Warranty and support

Up to 8-year warranty

Up to 8-year warranty

Our comprehensive warranty program ensures absolute financial security and long-term asset predictability for your project.

European service

European service

Spares and field-service coverage across EU markets.

Remote monitoring & O&M

Remote monitoring & O&M

Firmware updates and O&M options included in every commercial scope.

Monbat Group heritage

Monbat Group heritage

+65 european battery manufactu

Product rationale

Why engineers pick the EOM I 1045

Four design decisions that matter when you’re specifying a mid-size industrial BESS, not marketing prose.

Compact single-housing design

Battery, inverter stack, and EMS controller integrated in one cabinet footprint. No separate inverter enclosure to cable, permit, or cool. Cabinet weight under 20.0 t.

Plug-and-play commissioning

Shipped pre-configured, factory-tested, and ready for grid tie-in. Easy to relocate if the site plan changes. Typical on-site commissioning window: 1-3 weeks once delivered.

External EMS controller

Sits alongside the cabinet for flexibility stacks multiple units in parallel, interfaces with site SCADA via Modbus-RTU/TCP, and runs the full Monbat Energy EMS app suite (Peak Shaving, Self-Consumption, Grid-Supportive Charging, Market Participation).

Built for industrial and grid-serving duty

IP55 battery cabinet protection, –20 °C to +50 °C operating range, integrated fire safety system, and liquid-cooled LFP chemistry specified for the cycling profiles of peak shaving, backup, and trading workloads.

Deployment profile

Where the EOM I 1045 fits

Mid-size industrial and commercial sites with peak demand in the 500 – 1200 kW band or smaller sites stacking several revenue streams where 1045 kWh sizes cleanly against the daily cycling profile.

Manufacturing

Manufacturing

Peak shaving against demand charges. Backup for critical production lines and server rooms.

Logistics & cold storage

Logistics & cold storage

Nominal capacity
1044 kWh usable (BoL)

EV fast-charging forecourts

EV fast-charging forecourts

2-3 simultaneous 500 kW sessions buffered without a grid upgrade.

Commercial buildings

Commercial buildings

Self-consumption optimisation paired with rooftop PV via the optional DC/DC inlet.

Deployed example

A real EOM I 1045 deployment.

EV Fleet Fast Charging

Charge Point Operator

Industry
Transport&Logistic
Location
Germany
EV Fleet Fast Charging

Limited Grid Power

The charging site requires 600 kW to support current and future demands. The existing grid connection is limited. Expanding the grid connection would require significant infrastructure updates with estimated cost of €267k.

783 kWh BESS + integrated EMS

MONBAT Energy EOM 780 enables DC fast charging with the EMS configured to Peak Shaving, Dynamic Tariffs and Dynamic Load Balancing for charging stations. Three weeks from installation to live operation.

From Concept to Go-Live in 6 Months

A major achievement driven by outstanding teamwork, decisive project management and relentless focus. From planning to

commissioning, the entire project was delivered in only six months bringing value to the business faster than expected.

  • -38% Energy Cost
  • €276k Grid upgrade avoided
  • 4.8 yrs Payback

See if these numbers are realistic for your facility

FAQ EOM I 1045 – 1044 kWh

Further questions? Let’s personalize the information to your case.

Is the EOM I 1045 right for my site size?

It carries 1044 kWh nominal / 1000 kWh usable at beginning of life, with 500 kW rated AC power – battery, power conversion, and EMS all inside a single 6,096 x 2,600 x 2,591 mm housing under 20.0 tonnes. That envelope suits mid-to-larger C&I sites: manufacturing peak shaving, multi-bay fast charging, or stacked self-consumption and trading.  The honest answer is that “right size” is a function of your load profile, not nameplate – send us interval meter data and we’ll size it against your actual demand curve.

Can I deploy multiple EOM I 1045 cabinets in parallel?

Yes. The system is modular by design you parallel additional EOM I 1045 cabinets and the EMS coordinates them as one logical system, so peak shaving, backup, and trading logic apply across the whole installation rather than per cabinet. This is also how you scale later: start with what today’s load needs and add cabinets as the site grows, without re-engineering the EMS layer or replacing the first install.

What grid codes does it meet?

The power conversion stage complies with VDE-AR-N 4105:2018 (low-voltage) and VDE-AR-N 4110:2018 (medium-voltage), operating at 315–450 Vac three-phase, 50/60 Hz, with current THD below 3% at rated power and a continuously adjustable power factor from 0.9 inductive to 0.9 capacitive. The full certification stack – UN 38.3, IEC 62619, UL 1973, UL 9540A, IEC 62477-1 LVD and IEC 61000-6-2/4 EMC on the battery side, plus IEC 62477 and IEC 61000-6-2/-6-4 on the PCS side – is what financing partners and insurers look for, and it’s recognised without additional due diligence.

What's the lead time and commissioning window?

Delivery for a standard EOM I 1045 configuration is typically 8-12 weeks. On-site installation runs 1-3 weeks for a typical C&I facility; because the cabinet ships pre-assembled and factory-tested as a single plug-and-play unit, the disruptive part – grid tie-in and is usually a single shift scheduled outside production hours. The unit arrives at 30% state of charge and is commissioned on site. We coordinate with your facility manager and local DSO from day one.

Is the PV inlet required?

No, the PV connection is optional. When you want it, the EOM I 1045 accepts up to 500 kW of solar directly (up to five 30 kW DC/DC modules, 800 Vdc, one MPPT per module). Because the panels connect to the battery DC bus inside the same housing rather than through a separate AC inverter, you get higher round-trip efficiency on self-consumed solar (system round-trip efficiency is ≥ 88%). You can specify it now or add modules later; if your site has no PV and no plans for it, you simply leave the inlet unpopulated and lose nothing.

possible pairing

The EOM I 1045 ships with the Monbat Energy EMS

Hardware is only half the system. The EMS is what decides in real time, against your tariff and your load profile when to charge, when to discharge, when to hold, and which apps to prioritise.

Data centre with light rays

Reconfigurable application suite

The same controller runs Peak Shaving, Self-Consumption Optimisation, Grid-Supportive Charging, Backup, and Market Participation and the mix can be reconfigured as your commercial strategy evolves, without hardware changes.

Other models in the range

The EOM I 1045 is one of seven cabinets and containers.

EOM I 260

260 kWh cabinet. Mid-size industrial and commercial sites.

Chemistry
Liquid-cooled LFP
Housing
All-in-one cabinet
Best for
Smaller C&I sites
View EOM I 260 specs

EOM I 1300

1300 kWh cabinet. Large Industrial and commercial sites.

Chemistry
Liquid-cooled LFP
Housing
All-in-one cabinet
Best for
Smaller C&I sites
View EOM I 1300 specs

EOM I 1560

1560 kWh cabinet. Large industrial and commercial sites.

Chemistry
Liquid-cooled LFP
Housing
All-in-one cabinet
Best for
Smaller C&I sites
View EOM I 1560 specs

Ready to size the EOM I 1045 against your site?

Book a 30-minute call with a Monbat Energy engineer. We’ll review your load profile, peak demand, grid connection, and critical-load map and tell you honestly whether the EOM I 1045 is the right cabinet, or whether you need a different model in the range.

  • Free & no commitment
  • Custom to your use case
  • Expert response within 72h