A typical Solar-Storage-Charging (PV + ESS + EV Charging) integrated system consists of the following layers:
LayerComponentsKey Requirements
Generation
PV array (roof/canopy)
High efficiency, adaptable to various roofs
Storage
Battery racks + BMS + Thermal management + Fire safety
High safety, long cycle life, smart O&M
Power Conversion
Hybrid inverter / multi-port energy router
High compatibility, grid-forming capability, fast switching
Charging
DC fast charger + AC slow charger
Wide voltage range, V2G ready
Control
EMS + cloud platform + AI optimization
Strategy optimization, remote O&M, power trading
Safety
Fire suppression + gas detection + electrical protection
Active safety, early warning
Recommended topology: DC-bus coupling (PV, ESS, and chargers share a common DC bus) – highest efficiency, minimizes AC/DC conversion losses. AC-bus coupling is more flexible but has more conversion stages.
II. Core Component Selection & Supplier Recommendations (from ESIE 2026)
1. Battery Energy Storage System
Selection criteria: Cell capacity, cycle life, safety certifications, liquid/air cooling.
Recommended SupplierKey Products / Highlights
CATL
Tianheng ESS, EnerD DC container, sodium‑lithium dual‑chemistry
EVE Energy
6.9MWh system, residential & large‑format cells, excellent cycle life
Gotion High-tech
Qianyuan Zaidao X522/X261 cells, Tier 1 global supplier
HTHIUM
Large‑capacity ESS solutions, cost‑effective
Ampace
Anxin 300 system (150kW/301.5kWh), LFP‑302Ah cells
REPT
Liquid‑cooled modules, C&I all‑in‑one ESS
Recommendation: For a solar-storage-charging system (typically several hundred kWh to MWh), choose liquid‑cooled LFP batteries with cell capacity ≥280Ah for high energy density and low temperature difference.
2. Power Conversion System (PCS) / Hybrid Inverter
Selection criteria: Grid‑forming capability, wide voltage range, parallel operation, IP rating.
Recommended SupplierKey Products / Highlights
SUNGROW
C&I liquid‑cooled ESS, solar‑storage‑charging integrated solution, industry benchmark
NR Electric
1250kW grid‑forming PCS (PCS‑9567‑1250), ideal synchronous source technology
XJ Electric
6.88MW modular boost skid (also available in lower power), grid‑forming ready
Kehua Data
High‑reliability ESS, experienced in solar‑storage‑charging
Hopewind
High‑density, high‑reliability PCS, 2.5MW central liquid‑cooled PCS
YUNT
Mars‑145KT, Neptune series (IP66 rugged protection)
Nebula Electronics
NEPOWER storage‑charging integrated pile (189kWh battery + 270kW output, V2G & B2G)
GOODWE
Commercial hybrid inverters, mature solar‑storage‑charging solutions
MEGAREVO
Hybrid inverter expert, residential/industrial ESS solutions
Recommendation: Choose a hybrid inverter (connecting PV, battery, grid, and loads simultaneously) or a multi‑port energy router. Power rating depends on charger demand – typically 50kW to 500kW.
3. EV Chargers
Selection criteria: Wide output voltage (200‑1000V), dual‑gun/single‑gun, V2G capability, smart dispatching.
Recommended SupplierKey Products / Highlights
DELTA
Integrated DC charger 60‑240kW, wide voltage, OTA support, IP54
XJ Electric
Integrated DC charger, AC charger, V2G charger
Nebula Electronics
NEPOWER storage‑charging pile, 270kW output, dual‑gun, V2G & B2G
Recommendation: Prefer DC fast chargers (≥60kW) and reserve V2G interface for future vehicle‑grid integration.
4....
LayerComponentsKey Requirements
Generation
PV array (roof/canopy)
High efficiency, adaptable to various roofs
Storage
Battery racks + BMS + Thermal management + Fire safety
High safety, long cycle life, smart O&M
Power Conversion
Hybrid inverter / multi-port energy router
High compatibility, grid-forming capability, fast switching
Charging
DC fast charger + AC slow charger
Wide voltage range, V2G ready
Control
EMS + cloud platform + AI optimization
Strategy optimization, remote O&M, power trading
Safety
Fire suppression + gas detection + electrical protection
Active safety, early warning
Recommended topology: DC-bus coupling (PV, ESS, and chargers share a common DC bus) – highest efficiency, minimizes AC/DC conversion losses. AC-bus coupling is more flexible but has more conversion stages.
II. Core Component Selection & Supplier Recommendations (from ESIE 2026)
1. Battery Energy Storage System
Selection criteria: Cell capacity, cycle life, safety certifications, liquid/air cooling.
Recommended SupplierKey Products / Highlights
CATL
Tianheng ESS, EnerD DC container, sodium‑lithium dual‑chemistry
EVE Energy
6.9MWh system, residential & large‑format cells, excellent cycle life
Gotion High-tech
Qianyuan Zaidao X522/X261 cells, Tier 1 global supplier
HTHIUM
Large‑capacity ESS solutions, cost‑effective
Ampace
Anxin 300 system (150kW/301.5kWh), LFP‑302Ah cells
REPT
Liquid‑cooled modules, C&I all‑in‑one ESS
Recommendation: For a solar-storage-charging system (typically several hundred kWh to MWh), choose liquid‑cooled LFP batteries with cell capacity ≥280Ah for high energy density and low temperature difference.
2. Power Conversion System (PCS) / Hybrid Inverter
Selection criteria: Grid‑forming capability, wide voltage range, parallel operation, IP rating.
Recommended SupplierKey Products / Highlights
SUNGROW
C&I liquid‑cooled ESS, solar‑storage‑charging integrated solution, industry benchmark
NR Electric
1250kW grid‑forming PCS (PCS‑9567‑1250), ideal synchronous source technology
XJ Electric
6.88MW modular boost skid (also available in lower power), grid‑forming ready
Kehua Data
High‑reliability ESS, experienced in solar‑storage‑charging
Hopewind
High‑density, high‑reliability PCS, 2.5MW central liquid‑cooled PCS
YUNT
Mars‑145KT, Neptune series (IP66 rugged protection)
Nebula Electronics
NEPOWER storage‑charging integrated pile (189kWh battery + 270kW output, V2G & B2G)
GOODWE
Commercial hybrid inverters, mature solar‑storage‑charging solutions
MEGAREVO
Hybrid inverter expert, residential/industrial ESS solutions
Recommendation: Choose a hybrid inverter (connecting PV, battery, grid, and loads simultaneously) or a multi‑port energy router. Power rating depends on charger demand – typically 50kW to 500kW.
3. EV Chargers
Selection criteria: Wide output voltage (200‑1000V), dual‑gun/single‑gun, V2G capability, smart dispatching.
Recommended SupplierKey Products / Highlights
DELTA
Integrated DC charger 60‑240kW, wide voltage, OTA support, IP54
XJ Electric
Integrated DC charger, AC charger, V2G charger
Nebula Electronics
NEPOWER storage‑charging pile, 270kW output, dual‑gun, V2G & B2G
Recommendation: Prefer DC fast chargers (≥60kW) and reserve V2G interface for future vehicle‑grid integration.
4....
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A typical Solar-Storage-Charging (PV + ESS + EV Charging) integrated system consists of the following layers:
| Layer | Components | Key Requirements |
|---|---|---|
| Generation | PV array (roof/canopy) | High efficiency, adaptable to various roofs |
| Storage | Battery racks + BMS + Thermal management + Fire safety | High safety, long cycle life, smart O&M |
| Power Conversion | Hybrid inverter / multi-port energy router | High compatibility, grid-forming capability, fast switching |
| Charging | DC fast charger + AC slow charger | Wide voltage range, V2G ready |
| Control | EMS + cloud platform + AI optimization | Strategy optimization, remote O&M, power trading |
| Safety | Fire suppression + gas detection + electrical protection | Active safety, early warning |
Recommended topology: DC-bus coupling (PV, ESS, and chargers share a common DC bus) – highest efficiency, minimizes AC/DC conversion losses. AC-bus coupling is more flexible but has more conversion stages.
II. Core Component Selection & Supplier Recommendations (from ESIE 2026)
1. Battery Energy Storage System
Selection criteria: Cell capacity, cycle life, safety certifications, liquid/air cooling.
| Recommended Supplier | Key Products / Highlights |
|---|---|
| CATL | Tianheng ESS, EnerD DC container, sodium‑lithium dual‑chemistry |
| EVE Energy | 6.9MWh system, residential & large‑format cells, excellent cycle life |
| Gotion High-tech | Qianyuan Zaidao X522/X261 cells, Tier 1 global supplier |
| HTHIUM | Large‑capacity ESS solutions, cost‑effective |
| Ampace | Anxin 300 system (150kW/301.5kWh), LFP‑302Ah cells |
| REPT | Liquid‑cooled modules, C&I all‑in‑one ESS |
Recommendation: For a solar-storage-charging system (typically several hundred kWh to MWh), choose liquid‑cooled LFP batteries with cell capacity ≥280Ah for high energy density and low temperature difference.
2. Power Conversion System (PCS) / Hybrid Inverter
Selection criteria: Grid‑forming capability, wide voltage range, parallel operation, IP rating.
| Recommended Supplier | Key Products / Highlights |
|---|---|
| SUNGROW | C&I liquid‑cooled ESS, solar‑storage‑charging integrated solution, industry benchmark |
| NR Electric | 1250kW grid‑forming PCS (PCS‑9567‑1250), ideal synchronous source technology |
| XJ Electric | 6.88MW modular boost skid (also available in lower power), grid‑forming ready |
| Kehua Data | High‑reliability ESS, experienced in solar‑storage‑charging |
| Hopewind | High‑density, high‑reliability PCS, 2.5MW central liquid‑cooled PCS |
| YUNT | Mars‑145KT, Neptune series (IP66 rugged protection) |
| Nebula Electronics | NEPOWER storage‑charging integrated pile (189kWh battery + 270kW output, V2G & B2G) |
| GOODWE | Commercial hybrid inverters, mature solar‑storage‑charging solutions |
| MEGAREVO | Hybrid inverter expert, residential/industrial ESS solutions |
Recommendation: Choose a hybrid inverter (connecting PV, battery, grid, and loads simultaneously) or a multi‑port energy router. Power rating depends on charger demand – typically 50kW to 500kW.
3. EV Chargers
Selection criteria: Wide output voltage (200‑1000V), dual‑gun/single‑gun, V2G capability, smart dispatching.
| Recommended Supplier | Key Products / Highlights |
|---|---|
| DELTA | Integrated DC charger 60‑240kW, wide voltage, OTA support, IP54 |
| XJ Electric | Integrated DC charger, AC charger, V2G charger |
| Nebula Electronics | NEPOWER storage‑charging pile, 270kW output, dual‑gun, V2G & B2G |
Recommendation: Prefer DC fast chargers (≥60kW) and reserve V2G interface for future vehicle‑grid integration.
4. BMS & Energy Management System (EMS)
Selection criteria: BMS – high SOC/SOH accuracy, active balancing; EMS – multi‑strategy support (peak shaving, demand management, V2G scheduling).
| Category | Recommended Supplier | Highlights |
|---|---|---|
| BMS | BMser, GOLD Electronic, TIANPOWER | Ecological smart BMS, active balancing, large‑cell adaptation |
| BMS | GTN | 2nd‑gen active balancing BMS, integrated high‑voltage box |
| EMS | XYZ Storage | SEC‑2000, AIOPS‑2000 digital platform |
| EMS | XJ Electric | IESS8000 energy management system |
| EMS | Lnxall | SMc1000 source‑grid side EMS, digital EMS2.0 |
| EMS | SHONIS | SULISI EMS cloud platform, supports private deployment |
| EMS | Turing AI Energy | AI EMS, power bidding trading system |
| EMS | DLSOFT | EMS specialist, energy internet solutions |
Recommendation: Adopt an integrated BMS+EMS solution, preferably with cloud platform, AI optimization, and remote upgrade capabilities.
5. Thermal Management (Liquid / Air Cooling)
Selection criteria: Liquid cooling preferred for high power density, low temperature difference.
| Recommended Supplier | Key Products / Highlights |
|---|---|
| TCL | ESS liquid cooling units (high‑voltage cascade, dual‑circuit, C&I dedicated) |
| Envicool | Air‑cooled chillers, mature and reliable |
| TONEY | Liquid cooling units (LCU), industrial AC, dehumidifiers |
| SONGZ | Songzhi Haiku ESS liquid cooling expert |
| BlackShields | ESS environmental solutions |
| XENBO | ESS battery liquid cooling plates (for 587Ah‑1045Ah cells) |
Recommendation: For a liquid‑cooled battery system, use TCL or TONEY cooling units combined with XENBO cold plates for a complete liquid cooling loop.
6. Fire Safety & Protection
Selection criteria: Pack‑level detection + perfluorohexanone suppression + H₂/CO detection + explosion venting.
| Recommended Supplier | Key Products / Highlights |
|---|---|
| Honeywell | ESS fire safety solutions, multi‑dimensional integration |
| Jiandun Fire | Prefabricated ESS fire extinguishing devices |
| GW Safety | One‑stop ESS fire safety early warning |
| PROSENSE | Hydrogen/carbon monoxide sensors, ultra‑early gas detection |
| Fuji Technology | ESS thermal runaway monitoring & automatic extinguishing |
| Qianye Technology | ESS fire system solutions |
| ZKYA | Compressed air foam extinguishing modules |
Recommendation: Deploy Pack‑level perfluorohexanone suppression + cluster‑level composite detection (smoke + heat + gas) + explosion vent panels to meet UL9540A requirements.
7. Electrical Connectors & Cables
| Recommended Supplier | Products |
|---|---|
| PHOENIX CONTACT | Connectors, high‑current connections, industrial Ethernet |
| SANCO | High‑voltage connectors, fiber‑to‑CAN modules |
| Unicom | CCS, FPC, high‑voltage power transmission components |
| WAIN | Rectangular & circular connectors |
| Far East Cable / Xin Hongye | ESS cables, DC contactors, PDU |
8. Enclosures & Cabinets (Containers / Outdoor Cabinets)
| Recommended Supplier | Products |
|---|---|
| CIMC | ESS containers |
| Luyuan Intelligent | C&I ESS cabinets, ESS containers |
| Huachuang New Wind | Explosion‑proof pressure relief & ventilation devices |
| Guangdong Shangkun Industrial | Locks, hinges, handles, casters |
III. Equipment BOM for a 200kWp PV + 500kWh ESS + 4×60kW DC Charger System
| # | Category | Equipment | Specification | Recommended Supplier (from ESIE 2026) | Qty | Unit | Remarks |
|---|---|---|---|---|---|---|---|
| I. PV System | |||||||
| 1 | PV modules | Monocrystalline bifacial double‑glass | 580Wp, efficiency ≥21.5% | LONGi, JinkoSolar, TrinaSolar | 345 | pcs | 200kWp, for carport or rooftop |
| 2 | PV inverter | String inverter | 60kW, ≥6 MPPT, IP66 | SUNGROW, Huawei, GOODWE | 4 | pcs | Or use hybrid inverter (see below) |
| 3 | DC cable | PV1-F 4mm² | Double insulation, weather‑resistant | Far East Cable, Xin Hongye | – | m | Length depends on site |
| II. Energy Storage System | |||||||
| 4 | Battery rack | Liquid‑cooled LFP battery cluster | 314Ah cell, 51.2V, 51.2kWh per cluster | CATL, EVE Energy, Gotion | 10 | clusters | Total 512kWh (usable ~500kWh) |
| 5 | BMS | Master‑slave architecture | Active balancing, SOC accuracy ≤2% | BMser, GOLD Electronic, TIANPOWER | 1 | set | Includes BMU and BCU |
| 6 | PCS / Hybrid inverter | Multi‑module hybrid inverter | 100kW/200kWh module, parallel, grid‑forming | SUNGROW, NR Electric, Kehua | 5 | units | Total 500kW power |
| 7 | EMS | Local controller + cloud platform | AI optimization, peak shaving, demand mgmt, V2G | XYZ Storage, Lnxall, Turing AI | 1 | set | Includes local EMS cabinet + cloud SaaS |
| 8 | Thermal management | Liquid cooling unit | Cooling capacity ≥15kW, dual‑circuit, IP54 | TCL, Envicool, TONEY | 2 | units | N+1 redundancy or as per heat load |
| 9 | Fire safety system | Pack‑level perfluorohexanone + composite detection | Smoke, heat, H₂/CO sensors | Honeywell, Jiandun, GW Safety | 1 | set | Includes agent, piping, controller, vent panels |
| 10 | High‑voltage box / DC combiner | DC combiner cabinet | 1500V, fuses, breakers, SPD | XJ Electric, CHNT, LAZZEN | 1 | unit | Combines PV, ESS, charger DC buses |
| III. EV Charging System | |||||||
| 11 | DC fast charger | Integrated dual‑gun DC charger | 60kW, output 200‑1000V, V2G ready | DELTA, XJ Electric, Nebula | 4 | units | 2 guns each, total 8 guns |
| 12 | Charging operation platform | Cloud platform | QR code, card, remote monitoring, revenue stats | Nebula, TELD (3rd party) | 1 | set | Supplier platform or 3rd‑party |
| IV. Electrical & Connections | |||||||
| 13 | AC grid connection cabinet | Grid interconnection cabinet | Circuit breaker, meter, anti‑islanding | CHNT, LAZZEN, XJ Electric | 1 | unit | Connects to low‑voltage grid |
| 14 | High‑voltage connectors | ESS/charging dedicated connectors | 1500V, 200‑400A, IP67 | PHOENIX CONTACT, SANCO, Unicom | – | set | For battery clusters, PCS, combiner |
| 15 | ESS cables | DC dedicated cables | 1500V, low smoke halogen free | Far East Cable, Xin Hongye, Huaqi | – | m | Length depends on layout |
| 16 | Communication cables | Ethernet/RS485/CAN | Shielded twisted pair, fiber for long distance | PHOENIX CONTACT, UTEK | – | m | For BMS, PCS, EMS communication |
| V. Enclosures & Safety | |||||||
| 17 | Outdoor cabinet / container | 20ft prefabricated skid | IP54, lighting, fire ports | CIMC, Luyuan, Hanxin | 1 | unit | Houses battery racks, PCS, EMS, cooling |
| 18 | PV carport structure | Steel structure | Customized for PV modules | Local contractor | 1 | set | Site‑specific |
| 19 | Explosion venting device | Explosion vent panels, louvers | ATEX certified | Huachuang New Wind, DRAGON INDUSTRIES | 1 | set | Mounted on ESS container |
| 20 | Lightning protection & grounding | SPD + ground bus | Type I/II surge protection | Shenzhen Haitengxin, CHNT | 1 | set | Compliant with standards |
| VI. Monitoring & Auxiliaries | |||||||
| 21 | Environmental monitoring | Temp/humidity, water leak sensors | RS485 output | PROSENSE, Qingzhi Instrument | 1 | set | Inside cabinet environment |
| 22 | Video surveillance | HD IP cameras | 360° PTZ, night vision | Hikvision (3rd party) | 2 | units | Monitor charging & storage areas |
| 23 | Smart meter | Bidirectional meter | Accuracy 0.5S, 485/4G | XJ Electric, Wasion (3rd party) | 2 | units | PV generation & grid connection points |
| VII. Engineering & Services (optional) | |||||||
| 24 | System integration design | Full drawings + construction plan | – | XJ Electric, SUNGROW (EPC) | 1 | item | Can contract a turnkey integrator |
| 25 | Installation & commissioning | On‑site installation & system test | – | Integrator or supplier | 1 | item | – |
| 26 | O&M training | Operation & maintenance training | – | Supplier | 1 | item | – |
IV. Notes & Recommendations
- Capacity configuration: The above BOM is for a typical commercial/industrial scenario (200kWp PV + 500kWh ESS + 4×60kW chargers). Adjust according to actual PV area, charging demand, and transformer capacity.
- Technology priorities:
- Battery: Choose liquid‑cooled LFP with ≥314Ah large cells for high efficiency and long life.
- PCS: Use a hybrid inverter (DC‑coupled) to minimize AC/DC conversion losses.
- EMS: Must support peak shaving, demand management, V2G scheduling – AI‑based prediction is a plus.
- Fire safety: Must include Pack‑level + cluster‑level + enclosure‑level protection.
- Supplier selection: All recommended suppliers are from ESIE 2026. Further filter based on project location, service capability, and cost. For critical components (battery, PCS, EMS), prefer BNEF Tier 1 suppliers (e.g., CATL, SUNGROW, Gotion).
- Cost estimate: Current integrated system cost is approximately 2.0–2.8 RMB/Wh (including equipment, installation, civil works). ESS accounts for ~60%, PV ~15%, chargers ~15%, rest for electrical and auxiliaries.