BESS Engineering & Integration · Jiangsu, China

Energy storage systems engineered for real grid conditions.

We design, integrate and deliver lithium battery energy storage systems from 5 kWh to 20 MWh — for commercial and industrial sites, utility-scale projects, and weak-grid communities across the Americas and Southeast Asia.

Request a Proposal See reference solutions
  • UL 9540
  • UL 1973
  • IEC 62619
  • UN 38.3
System platform Shipping
20MWh Max project size
6,000 Battery cycles
94% Round-trip eff.
12 Export markets
CERTIFIED · UL / IEC 48H PROPOSAL TURNAROUND
Certified & compliant
UL 9540 UL 1973 IEC 62619 CE UN 38.3 ISO 9001
24/7

Remote EMS monitoring & support

1,800+

Systems deployed worldwide

12

Export markets served

48h

Technical proposal turnaround

Solutions

Reference configurations, not catalogue boxes.

Every project starts from three inputs: the site load profile, the PV or grid connection, and the local utility's interconnection rules. Below are the two configurations we size most often, drawn as single-line topology so your engineers can review the architecture before any commercial discussion.

01 Grid-tied PV + storage · North America

Solar captured by day, released at night

A 250 kW / 1.8 MWh lithium storage system — two 125 kW PCS sharing one combiner and control cabinet with six battery packs — working alongside a commercial PV array of eight string inverters on a 480/277 V AC bus. Surplus generation charges the battery through the day and is discharged at night to carry the facility load. PV output above what the battery and the site can absorb is exported to the utility grid.

  • Charging from true surplus only. The EMS compares PV production with site load in real time and diverts only excess generation into the battery, so array yield is never curtailed just to charge.
  • Night discharge against facility load. Stored energy covers evening and overnight demand, moving PV generation into the hours when the site would otherwise buy from the grid.
  • Export once the battery is full. When state of charge reaches its ceiling and daytime load is met, remaining PV output flows to the grid under the site's net-metering or PPA arrangement.
  • Interconnection-ready electrical design. 480/277 V three-phase, 60 Hz, IEEE 1547 grid interface, with metering CTs and the protection, labelling and documentation package the utility's interconnection review asks for.
Rated power
250 kW
Usable energy
1.8 MWh
Duration
7.2 h
Configuration
AC-coupled
Grid interface
480/277 V · 60 Hz
Compliance
UL 9540 · IEEE 1547 · NEC Art. 706
Core equipment
2 × 125 kW PCS · 6 battery packs · EMS
Discuss this configuration Sized to your load profile within 48 h
Single-line topology: 480V/277V AC bus with two 125 kW PCS, six battery packs, combiner and control cabinet, EMS, eight PV string inverters and grid interface with metering CTs
Single-line topology · 480/277 V bus, 2 × 125 kW PCS, 8 PV inverters Click to enlarge
02 Off-grid microgrid · North America

Solar first, battery through the night, diesel as backstop

A 125 kW / 1.6 MWh battery inside a small off-grid microgrid. Two 50 kW PV inverters and a 50 kVA diesel genset feed a 480 V bus; a static transfer switch and a 100 kVA transformer hand power to the 208/120 V load bus. Surplus PV charges the battery by day and stored energy carries the load at night. When the battery can no longer hold demand, the genset takes over — all scheduled by one cloud-connected EMS.

  • PV is the primary source. Whatever the load does not consume during the day is pushed into the battery, so array output is used rather than curtailed until the battery reaches its ceiling.
  • The battery carries the night. Stored energy serves evening and overnight demand, keeping the genset off for as many hours as the state of charge allows.
  • Diesel starts on a real shortfall. When state of charge reaches its reserve floor and the battery can no longer hold the load, the EMS auto-starts the genset, the static transfer switch closes it onto the bus and the battery recharges inside its efficient loading band — no operator on site.
  • One EMS dispatches all three sources. Source priority, SOC limits, generator start/stop thresholds and charge rates live in a single controller, not in three separate products that have to be coordinated by hand.
  • Remote configuration and diagnostics. The EMS is cloud-connected: setpoints, operating mode and firmware can be changed, and faults read, without sending a technician to site — the deciding factor for sites that are hours from the nearest service base.
Rated power
125 kW
Usable energy
1.6 MWh
Duration
12.8 h
Microgrid
Off-grid
Load bus
208/120 V
Control
EMS · cloud
Core equipment
125 kW PCS · 7 battery packs · 2 × 50 kW PV
Compliance
UL 9540 · NEC Art. 706
Discuss this configuration Sized to your load profile within 48 h
Single-line topology: 480 V off-grid microgrid with a 50 kVA generator, 125 kW PCS, seven battery packs, two 50 kW PV inverters, STS and 100 kVA transformer feeding a 208/120 V load bus, dispatched by EMS
Single-line topology · 480 V microgrid, 208/120 V load bus, EMS Click to enlarge
Target markets

Two regions, two very different grids.

A storage system that passes inspection in Ohio will not necessarily survive a substation in Sumatra. We build region-specific variants rather than shipping one generic product to both — different certifications, grid codes, cooling strategies and corrosion protection.

AMERICAS

United States · Canada · Mexico · Brazil

Focused on utility-scale and C&I projects driven by ITC incentives, demand charge management and grid resilience requirements.

  • CertificationUL 9540 / UL 1973 / UL 9540A
  • Grid codeIEEE 1547 / NERC
  • Grid frequency60 Hz
  • Voltage class480 V / 13.8 kV
  • Typical scopeContainerized + PCS
Local service partners in Texas, California and Ontario for commissioning and field support.
SOUTHEAST ASIA

Philippines · Vietnam · Indonesia · Thailand · Malaysia

Built for weak-grid, high-humidity and islanded conditions where diesel displacement and grid stability are the primary drivers.

  • CertificationIEC 62619 / IEC 62933
  • Grid codeLocal PGC / off-grid
  • Grid frequency50 Hz / 60 Hz (PH)
  • ProtectionC5-M corrosion, IP65
  • Typical scopeMicrogrid + diesel hybrid
Tropical thermal management validated to 45 °C ambient with humidity control and anti-condensation cycling.
Why Ener

We sell systems, not cells in a box.

Most failures in overseas storage projects are not cell failures — they are integration failures: mismatched PCS, unusable EMS, certification gaps, or no one to call when a site trips. Our scope is built to remove those risks.

Certification-first engineering

UL 9540A cell-level thermal runaway testing completed before design freeze, not after. We supply the full test reports, not just a certificate number, so your AHJ review does not stall.

Full integration scope

Battery, BMS, HVAC or liquid cooling, fire suppression, PCS and EMS from one supplier. One warranty, one firmware version, one throat to choke when a site alarms.

Export and logistics

UN 38.3 test summaries, Class 9 dangerous goods documentation, ISPM 15 crating and FOB / CIF / DDP terms. We have shipped battery systems into 12 markets without a customs hold.

Remote monitoring & O&M

Every system ships with cloud monitoring, cell-level voltage visibility and alarm push. Optional 10-year O&M agreements with guaranteed response times by region.

How we work

From load profile to commissioning.

Load & site review

Share your load profile, utility tariff, site conditions and grid constraints. We size the system and flag risks.

Technical proposal

A sized system, single-line diagram, certification path and costed BOM — returned within 48 hours.

Pre-shipment testing

Witnessed capacity and protection testing, plus the full documentation package, before the system ships.

Commissioning

Remote or on-site commissioning support, grid-code compliance verification and operator training.

Reference projects

Deployed systems in the Americas and Southeast Asia.

Client names are withheld under NDA. Full references and site visits available during supplier qualification.

PROJECT · US-TX-2401
Texas, USA · Utility

Solar + storage co-location

40-ft liquid-cooled containers paired with a 20 MW PV plant, providing four hours of dispatchable capacity for ERCOT arbitrage.

24MWh capacity
4 hDuration
94%Round-trip
PROJECT · PH-ISL-2312
Visayas, Philippines · Microgrid

Diesel-displacement island microgrid

Hybrid storage and control system on an island grid, cutting diesel consumption while stabilising frequency through cloud cover and load steps.

68%Diesel cut
2.4MWh capacity
C5-MCorrosion class
PROJECT · VN-CI-2405
Binh Duong, Vietnam · C&I

Factory peak shaving

Two 250 kWh cabinets at an electronics plant, cutting maximum demand charges and providing ride-through during voltage sags.

31%Demand cut
500kWh installed
3.1 yrPayback
"
What made the difference was the grid-code review. Our utility had requirements that no datasheet addressed, and their engineers rewrote the PCS control logic before shipment rather than promising a firmware update after commissioning.
RA
R. Alvarez Project Director · Renewable IPP, Texas
About Ener

Founded by battery engineers, not traders.

Jiangsu Ener New Energy Technology Co., Ltd. was founded in 2025 in Suzhou by engineers who spent the previous decade in pack assembly, BMS development and utility-scale commissioning. We do not sell cells in a box: we design the architecture, qualify every component, own the certification file, and stay on the project through commissioning and O&M.

  • One engineering team owns your project from load profile to commissioning
  • EMS controls logic configured in-house — not white-labelled third-party firmware
  • Region-specific variants: 50/60 Hz, C5-M corrosion, tropical thermal design
  • English, French and Chinese speaking engineering and sales team
Request a proposal

Tell us your load profile. Get a sized system in 48 hours.

Share your project location, load profile or monthly consumption, target capacity and grid constraints. Our application engineers will return a sized system configuration, single-line diagram and costed proposal — no obligation, NDA available on request.

Email alex@jsenertech.com
Phone / WhatsApp +86 512 6915 6879
Headquarters No. 28 Nantiancheng Road, Xiangcheng District,
Suzhou, Jiangsu 215131, China
Response time Engineering replies within 1 business day · Proposals within 48 hours

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