1,044 kWh Peak Shaving BESS · Shenzhen
Commercial & Industrial BESS Supply · Clou Energy 125 kW / 261 kWh All-in-One Storage Cabinets
Commercial & Industrial BESS Supply · 1,044 kWh Peak Shaving Grid-Tied System
Project Overview
| Parameter | Value |
|---|---|
| Total System Capacity | 1,044 kWh (4 × 261 kWh) |
| Total System Power | 500 kW (4 × 125 kW) |
| Unit Specification | Clou Energy 125 kW / 261 kWh C&I All-in-One BESS |
| Application | Peak Shaving & Valley Filling |
| Grid Connection Mode | Grid-Tied BESS |
| Location | Shenzhen, Guangdong, China |
| Production Lead Time | 50 Days from PO to Delivery |
| Commissioning Date | August 2025 |
| Export Certifications | CE / IEC 62619 / UL 9540 / UN38.3 |
Product Solution
This project deploys 4 units of Clou Energy commercial & industrial all-in-one energy storage cabinets, each with 261 kWh capacity and 125 kW power rating, paralleled to form a 1,044 kWh / 500 kW energy storage system. Clou Energy is a global leading ESS manufacturer ranked among the top 10 worldwide by shipment volume, with products deployed across Europe, North America, and Southeast Asia markets.
| Parameter | Per Unit | System Total | Notes |
|---|---|---|---|
| Battery Capacity | 261 kWh | 1,044 kWh | LFP (LiFePO₄) |
| Rated Power | 125 kW | 500 kW | Bidirectional Inverter |
| Cycle Life | ≥ 6,000 cycles | — | @25℃ / 80% DOD |
| System Efficiency | ≥ 90% | — | AC Round-trip Efficiency |
| IP Rating | IP54 | — | Outdoor Rain & Dust Proof |
| Cooling | Smart Air Cooling | — | Adaptive Temperature Control |
| Dimensions | Standard Cabinet | — | Compact Footprint |
| Weight | ~3.5 Tons | ~14 Tons | Including Base |
Application: Peak Shaving & Valley Filling
In commercial and industrial electricity usage scenarios, significant peak-to-valley price spreads exist. The BESS charges during nighttime low-price periods and discharges during daytime peak-price periods. Through a “low-charge high-discharge” strategy, the system reduces enterprise electricity costs while alleviating peak-load pressure on the grid.
| Time Period | Strategy | Benefit |
|---|---|---|
| Night Valley 23:00–08:00 | Charge at low grid price · Store energy in BESS | Energy stored for daytime use |
| Day Peak 09:00–12:00 / 14:00–17:00 | Discharge at peak price · Offset expensive grid power | Reduce electricity bills by 30–50% |
| Critical Peak 19:00–22:00 | Emergency discharge support · Avoid demand charge penalties | Prevent peak demand surcharges |
Based on this project's 1,044 kWh capacity, 2 daily cycles, 300 operating days per year, and a peak-to-valley price spread of ~0.12 USD/kWh, the system achieves estimated annual electricity savings of ~66,000 USD (accounting for 90% round-trip efficiency). Typical payback period is 3–4 years depending on local tariff policies.
Supply & Commissioning Workflow
SJ Solarhub provides one-stop BESS delivery services from site survey, product supply, foundation construction, equipment installation to grid commissioning. This project moved from purchase order to grid connection in just 50 days, validating our efficient supply chain management and engineering execution capability.
Site Survey
Survey BESS installation location, cable routing, and distribution room capacity; confirm interconnection points and installation conditions.
Foundation Work
Pour concrete foundation for storage cabinets, embed cable conduits, ensure load-bearing capacity and waterproofing.
Product Delivery
50-day production lead time; cabinets delivered from factory to site with factory inspection reports.
Installation
Cabinet positioning, DC/AC cable connection, communication system commissioning, fire protection configuration.
Grid Connection
Connect to on-site distribution system, EMS energy management system commissioning, utility acceptance and grid synchronization.
Certifications & Standards
The Clou commercial energy storage cabinets supplied by SJ Solarhub have passed multiple international authoritative certifications, meeting market access requirements for Europe, North America, the Middle East, Japan, India, and other major markets—ensuring product safety, performance, and compliance.
| Certification | Market | Scope |
|---|---|---|
| CE Marking | Europe | LVD / EMC / RoHS Directive Compliance |
| IEC 62619 | Global | Safety of Industrial Li-ion Cells & Systems |
| IEC 62933 | Global | Safety Requirements for EESS |
| UL 9540 | North America | Energy Storage System Safety Standard |
| UL 1973 | North America | Safety for Stationary Battery Systems |
| UN38.3 | Global | Lithium Battery Transport Safety |
Key Advantages
Global Brand Partnership
Authorized distributor of Clou Energy C&I storage cabinets. Clou ranks among the top 10 global ESS manufacturers by shipment volume, with deployments across Europe, North America and Southeast Asia.
Rapid Delivery Capability
From PO to product delivery in just 50 days — agile supply-chain management built for urgent project timelines.
Peak Shaving Expertise
Built-in EMS executes charge/discharge strategies automatically — no manual intervention, with 30–50% annual electricity savings.
Strong Grid Compatibility
Grid-tied operation with adjustable power factor and full anti-islanding protection — compatible with grid interconnection standards across multiple countries.
Multi-Layer Safety Protection
LFP cells + three-level BMS + fire-suppression interlock + combustible-gas detection — system-level safety design.
Compact Outdoor Design
IP54 protection + smart air-cooling thermal management + standard cabinet dimensions + small footprint — ideal for space-constrained C&I sites.
One-Stop Delivery
SJ Solarhub manages the full lifecycle — survey, supply, construction, grid connection and O&M — through one accountable point of contact.
About SJ Solarhub
SJ Solarhub provides integrated EPC solutions covering PV, energy storage, and EV charging infrastructure for commercial, industrial, and residential clients. With 12 years of deep expertise in the new energy sector, our team holds national-grade new energy design qualifications and electrical engineering construction licenses, having cumulatively completed project designs exceeding 150 MW across China and international markets.
In the energy storage domain, we maintain authorized distribution partnerships with global leading ESS manufacturers such as Clou Energy, possessing full-chain delivery capability spanning product selection, supply chain procurement, export logistics, on-site installation, and grid commissioning. All supplied products carry CE, IEC, UL, and other international certifications, supporting compliant market access worldwide.
We provide one-stop energy storage solutions from needs analysis, system design, equipment supply, construction, to O&M hosting, supporting major global certification systems (IEC / TÜV / CE / SAA / ETL / UL).
Need Commercial BESS Supply & Peak Shaving Solutions?
Contact us for one-stop solutions from survey, supply, installation to grid connection.