Teemway Solar – Your Trusted Solar OEM & ODM Partner

Home / Products / Outdoor Cabinet Energy Storage Large C&I Lithium Battery System ESSB(1MWh/2MWh)
Integrated 20ft container energy storage system 1MWh 2MWh for large-scale solar and wind projects

Outdoor Cabinet Energy Storage Large C&I Lithium Battery System ESSB(1MWh/2MWh)

1MWh/2MWh3W+N+PEAll In One

Home / Products / Outdoor Cabinet Energy Storage Large C&I Lithium Battery System ESSB(1MWh/2MWh)

Outdoor Cabinet Energy Storage Large C&I Lithium Battery System ESSB(1MWh/2MWh)

1MWh/2MWh3W+N+PEAll In One

Integrated 20ft container energy storage system 1MWh 2MWh for large-scale solar and wind projects

Highlights at a Glance

  • Friendly & Flexible – Standardized 20ft container design, easy expansion, supports load, battery, grid, diesel generator, and PV access.

  • Safe & Reliable – Equipped with advanced BMS, thermal management, and real-time online monitoring for secure operation.

  • Abundant Configurations – Capacity options up to multi-MWh, multiple working modes for peak shaving, backup, or grid interaction.

  • Integrated Design – Combines lithium battery units, PCS, EMS, fire suppression, and cooling systems for turnkey deployment.

  • High Performance – Ensures stable power supply, reduces outage losses, and enhances grid-friendly interaction.

Quick Summary

ESSB(1MWh/2MWh) 20ft high-energy-density container ESS integrates 8×138kWh lithium battery units and BPS series PCS. With EMS intelligent control, it ensures safe, flexible, and reliable power for industrial and commercial users during peak shaving, power-limiting, or backup scenarios. This integrated energy storage system is widely used in factories, data centers, microgrids, renewable energy projects, EV charging stations, and remote areas, providing efficient energy management and stable power supply.

ModelTW-ESSB500TW-ESSB1000
Rated power500kw1000kw
Rated voltage400V400V
Rated current722A1,445A
Voltage range320V-460V320V-460V
Rated frequency50/60Hz50/60Hz
Frequency Range45-55 / 55-65Hz45-55 / 55-65Hz
THDi (on-grid)<3%<3%
THDu (off-grid)≤ 1% linear; ≤ 5% non-linear≤ 1% linear; ≤ 5% non-linear
Power factor1leading~1lagging(settable)1leading~1lagging(settable)
Overload capacity110% long-term110% long-term
Grid type3W+N+PE3W+N+PE
Isolation transformer315/400315/400
On / off-grid switchingSupportSupport
Max. PV input voltage1,000V1,000V
Max. PV power600/660/720kw1,200/1,320/1,440kw
MPPT operating voltage range250~850V250~850V
Buck-boost modeSupportSupport
Cell type3.2V/280Ah/LFP3.2V/280Ah/LFP
Rated voltage672~850V672~850V
Rated energy 1.0752Mwh2.1504Mwh
Operating voltage range403.2~511.2V403.2~511.2V
Max. charge and discharge rate0.5C@25℃0.5C@25℃
Number of battery cycles≥6,000≥6,000
Operating temperature0~+450~+45
Relative humidity0 ~95%(non-condensing)0 ~95%(non-condensing)
Ingress protection IP54IP54
Noise emission (dB)<75db<75db
CoolingIntelligent air coolingIntelligent air cooling
Fire extinguishing systemAerosols/NOVEC1230(optional)Aerosols/NOVEC1230(optional)
Dimensions6,058×2,438×2,896mm12,192×2,438×2,896mm
Weight21,000kg38,000kg
EMS communicationRS485,TCP/IPRS485,TCP/IP
Display7”device display +10” EMS display +10”BMS display (configurable)7”device display +10” EMS display +10”BMS display (configurable)

Warranty & Service

10 years for inverters, 5 years for batteries.For extended warranty options, please inform us before placing your order.

Order Process

Inquiry & Confirmation

Discuss requirements and confirm order details.

Production Scheduling

Arrange manufacturing according to the confirmed order.

Shipping & Dispatch

Notify you for shipment after quality inspection is completed.

Delivery to Your Country

Goods arrive at your designated location.

  • B2B Wholesale

    Our professional sales consultants analyze your market and recommend the most suitable products, configurations, and pricing for your business. We support sample orders, small-batch OEM orders, and large-scale ODM projects, offering flexible solutions to meet your needs. During your wholesale, retail, or project sales process, we provide 24-hour support to help you overcome challenges and succeed in your market. We accept T/T payments under FOB or EXW terms, and multiple currencies are supported. For product inquiries or to place an order, please contact us!

  • DIY Assembly Needs

    We create a personalized checklist based on your region and project needs, helping you choose the most suitable products and configurations. We offer multiple payment options and can ship directly to your home via air or sea freight. For installation or after-sales issues, our factory-direct service and warranty ensure prompt support. If there is a local agent or warehouse in your area, we also support direct pick-up or delivery from the warehouse. Any defective products can be returned to the warehouse for replacement or repair, making your DIY project hassle-free.

  • EPC

    If you are a local EPC or require products with EPC services, we offer special agreement pricing and manufacturer warranty for EPC service providers. Payment options support FOB or EXW terms, and our technical team provides 24-hour remote support to assist your project implementation. For on-site EPC projects, we match the best local resources based on your region and provide remote or on-site assistance. From equipment supply to installation and commissioning, we offer a complete turnkey solution, ensuring your project is implemented smoothly and efficiently.

Related Products

Related Links

Residential Solar Solutions
Flexible Residential Solar Off-Grid / Hybrid for Every Need
Explore Solutions
Energy Storage Solutions
Advanced Lithium Battery Systems for Homes and Businesses
Explore Solutions
C&I Solar Solutions
Reliable, Scalable, and Cost-Effective Power for Enterprises
Explore Solutions
Solar Pumping Solutions
Reliable Solar-Powered Water Pumps for Agriculture and Remote Areas
Explore Solutions
Solar Lighting & CCTV Solutions
Reliable Illumination and Security Powered by Solar Energy
Explore Solutions

Still Have Questions?

OR

Get in touch with our experts for OEM inquiries, technical support, or project design.
Quick response within 24 hours.