Commercial Lithium BESS

What we build for commercial and industrial sites
EGbatt supplies lithium iron phosphate (LFP) battery storage for commercial and industrial
sites — from a single rack that shaves a demand peak, through cabinet systems that ride through
outages, to containerised builds that firm a microgrid or buffer an EV charger. Every system below is
offered as hardware plus a specification review: we check your interval data and single-line diagram
before recommending a configuration, not after.

Configuration tiers
Choose by what the site needs the battery to do, not by nameplate kWh. The tiers below map
to products actually listed on this page:

Commercial BESS configuration tiers and what each one is chosen for

TierTypical energyTypical powerChosen when…Reference systems

Rack / cabinet50–150 kWh50–125 kWA single peak window or one critical circuit needs covering68–150 kWh ESS, 100 kWh 512 V
High-voltage string100–215 kWh100–125 kW three-phaseFactory or warehouse with a hard demand ceiling and daily cycling100–215 kWh 768 V HV, 256 V rack HV
Containerised200 kWh – 1 MWh+200 kW & upEV charging without a transformer upgrade, microgrid, or diesel displacement1 MWh 500–800 V peak-shaving, 800 V 200 kWh three-phase
Power conversion—100–125 kWGrid interface, off-grid forming, or US 480/277 V service100/125 kW PCS, 480/277 V PCS for USA

Sizing: the four numbers we need from you

15-minute interval data (6–12 months) — sets both the power rating and how
often the system must cycle.
Tariff sheet — peak/off-peak windows, demand charge structure, export rate.
Single-line diagram — where the battery connects, and whether the transformer has
headroom.
Backup scope — which circuits, and for how many hours. Reserve subtracts directly
from arbitrage energy; it must be decided before sizing, not after.

The method behind these inputs is set out in the
EGbatt energy storage system design guide,
and the operating logic in
how commercial energy storage systems work.

Questions that decide the quote

Cycle life, on what basis? Ask for guaranteed cycles to end-of-warranty state of
health, with the depth-of-discharge, temperature and C-rate stated — a headline number
without its test conditions is not a specification.
Cooling. Air-cooled cabinets sit indoors; liquid-cooled containers carry a larger
auxiliary load but hold temperature in harsh ambient. Ask which architecture each quoted model
uses, and what the auxiliary load is at your design temperature.
Round-trip efficiency. Insist on a system-level figure including PCS and
auxiliary loads, not a cell-level number — the two are not the same number.
Certification for the jurisdiction. Ask which certificates the quoted system
holds at cell and system level, plus the fire-code separation distances that affect
permitability in your market.
Inverter compatibility. Which hybrid and string inverters the BMS communicates
with, and at what firmware version — ask for the published compatibility list, not a
verbal assurance.

Frequently asked questions
What size commercial battery storage system does my site need?
Multiply the peak power you must cover by the hours you must cover it for, then add the backup reserve.
That gives energy; the power rating comes separately from the highest coincident demand the battery must
clip, not from the site’s connected load.
Can commercial storage replace a transformer upgrade?
Often yes for EV charging and short industrial spikes: the battery supplies the pulse the connection
cannot, which is why battery-integrated chargers exist. See
180 kW charger with 100–400 kWh storage.
Do these systems work off-grid?
Only with a PCS configured for grid-forming operation and enough energy for the autonomy required;
a peak-shaving configuration is not automatically an off-grid one.
What is the difference between a rack system and a containerised system?
Installation envelope and scale: racks are indoor, module-expandable and cheapest per kWh at low
hundreds of kWh; containers add cooling, fire suppression and transportable integration, and become
the practical choice once a site moves past a few hundred kWh.
Can we start with a smaller system and expand?
Yes, if the parallel limit and the switchgear are specified for the end-state on day one. Expanding a
system that was not designed for parallel operation usually means replacing the interface, not adding racks.

Next step
Send interval data, tariff and single-line diagram, and we return a tier recommendation with power,
energy, cycle assumption and the certifications that apply:
request an engineering quote. Distribution and resale:
dealer programme. Related product families:
rack-mount batteries and
wall-mount ESS.

What are Commercial Battery Storage Systems?
Commercial battery storage systems are large-scale energy storage solutions, akin to big power banks, designed to store and release electricity from various sources. These systems vary in size and capacity, ranging from 50 kWh to 1 MWh, making them suitable for small- to medium-sized organizations.

With a modular structure, these systems can be customized to meet specific applications and customer needs. They are widely used in facilities like schools, hospitals, petrol stations, shops, and industries to manage energy requirements effectively.

Commercial battery storage systems help support the grid by balancing demand fluctuations, providing backup power during outages, and integrating with renewable energy sources like wind and solar. They can also reduce electricity bills and create new revenue opportunities, making them a cost-effective solution for many businesses.