• Dagong ESS

The Rise of Solar-Storage-Charging Integration – The Future of Clean Mobility

What is Solar-Storage-Charging Integration?

Solar-Storage-Charging Integration (often abbreviated as SSC or PV + ESS + EV Charging) refers to a unified energy system that combines solar power generation, battery energy storage, and electric vehicle (EV) charging into one intelligent, coordinated network.

An SSC system uses an energy management system (EMS) to balance power flows in real time — storing excess solar energy during the day, providing charging power during peaks, and ensuring smooth grid interaction.

The system typically includes:

• PV panels + inverter: convert sunlight into usable electrical power.

• Energy storage system (ESS) + PCS: store electricity when solar output is high and release it when needed.

• EV chargers (AC / DC): serve as dynamic loads within the system.

• EMS / SCADA: manage scheduling, power distribution, and fault monitoring.

The result is a self-sufficient, intelligent charging station capable of peak shaving, cost reduction, and off-grid operation when necessary.

Types of Solar-Storage-Charging Systems

• Rooftop / Carport PV + ESS + Charging Integration
  Ideal for shopping malls, parking lots, and public charging hubs. The carport PV provides both shading and power generation.

• Ground-mounted SSC Systems
  Used in logistics centers, service areas, and large EV depots — where PV space is abundant and power demand is high.

• Containerized / Modular SSC Solutions
  Integrate PV inverters, ESS batteries, and chargers inside modular containers, suitable for temporary or remote charging sites.

• Hybrid Renewable + ESS + EV Systems
  Combine solar, wind, or even hydrogen to increase system resilience and green power ratio.

Dagong ESS offers modular energy storage products ideal for these configurations — such as the 100–144 kWh Air-Cooled ESS, 215–241 kWh Air- or Liquid-Cooled ESS, and 3.35 MWh / 5 MWh Container ESS — ensuring scalability and reliability.

Key Features and Advantages

• Maximized Self-Consumption: On-site PV directly supplies chargers, minimizing feed-in waste.

• Peak-Shaving and Grid Stabilization: ESS smooths power fluctuations and reduces grid stress.

• Cost Optimization: Lower peak electricity bills through smart scheduling.

• High Reliability and Resilience: Continue charging during grid outages.

• Modular and Scalable Design: Flexible capacity expansion using modular ESS.

• Environmental Benefits: Significant carbon reduction and renewable utilization.

Example:
XCharge North America deployed Oregon's first solar-plus-storage fast-charging site — integrating 215 kWh storage and 40 kW PV for high-power output and grid relief.
Similarly, REC Solar built a 514 kW PV + ESS + EV canopy station in California that combines energy generation, shading, and aesthetic design.

Applications

• Highway Service Areas / Charging Hubs

• Fleet Charging Depots for Buses and Trucks

• Commercial / Residential Parking Lots

• Remote or Island Microgrids

• Smart Cities and Industrial Parks

In Switzerland, Eaton and AMP IT launched a “Charging-as-a-Service” solution integrating solar, ESS, and EV charging for building owners — a model of the modern green hub concept.

Price of Solar-Storage-Charging Systems

The cost of an integrated SSC system generally ranges from USD 1,200 – 2,500 per kW (depending on PV size, battery capacity, and local installation costs).
For a 500 kW PV + 1 MWh ESS + multiple DC chargers project, total installed costs typically fall between USD 0.9M and 2.0M, varying by site and design.
Prices are expected to decline further from 2025 to 2030 as battery and inverter technologies advance.

How to Select the Right SSC System

• Charging Power Demand: Evaluate EV types, number of chargers, and power rating.

• PV Capacity & Layout: Based on available area, orientation, and sunlight exposure.

• Battery Sizing & C-Rate: Match energy demand peaks and backup needs.

• PCS / Inverter / Charger Compatibility: Ensure efficient bi-directional control.

• EMS Intelligence: Look for smart forecasting, load prediction, and V2G/VPP functions.

• Safety and Certification: Verify cooling method, protection level, and international compliance.

• Modularity and Scalability: Choose modular ESS for future expansion.

• Local Policies & Incentives: Factor in subsidies and grid connection requirements.

How Long Does an SSC System Last?

• PV Panels: 25 years +

• ESS Battery (LFP/NMC): 6,000+ cycles / 10 years + lifespan

• Inverters & EMS: 10 – 15 years

With modular design and preventive maintenance, SSC systems can operate reliably for over 10 years.
Dagong ESS systems, such as the 215 kWh Liquid-Cooled and 5 MWh Container ESS, feature 8,000+ cycles and 15+ years of service life, making them ideal storage cores for SSC stations.

The Supplier of Solar-Storage-Charging Solutions

An ideal supplier should provide:

• Complete product range (ESS, PCS, inverters, chargers, EMS)

• Modular, customizable design

• Strong integration & EPC capability

• Certified quality (CE, UL, IEC, ISO)

• After-sales & remote monitoring support

• Proven project references

Dagong ESS delivers modular storage systems from 100 kWh to 5 MWh, adaptable to both small-scale EV charging sites and large highway hubs.

If you are interested in solar-storage-charging integrated solutions, please contact Dagong ESS.
Email: sales@dagongess.com