As Europe’s energy transition accelerates, solar-plus-storage has become a standard configuration for large-scale photovoltaic plants. According to industry analysis from BloombergNEF, the continent’s cumulative PV-plus-storage capacity is projected to exceed 15 GWh by 2029. Despite this growth, challenges such as high costs, efficiency limitations, and solar curtailment continue to constrain the financial returns of hybrid systems.
To address these barriers, Sungrow recently unveiled its Single-Platform Design for a DC-Coupled PV-ESS Solution at an industry summit. The integrated solution combines a 1+X modular inverter with a dedicated storage port, the PowerTitan 3.0 energy storage system equipped with a built-in DC/DC converter, and a specialized PV-ESS Synergy Management System. This unified architecture is designed to enhance operational efficiency, enable flexible energy dispatch, and improve grid compliance for major solar projects across Europe.
The system is built on a single-platform design that ensures cohesive coordination between PV generation and storage. It supports extended discharge durations of up to 8 hours, a high DC/AC ratio of 2.0, and 100% utilization of the storage system’s power. This configuration optimizes energy arbitrage between peak and off-peak pricing periods, helping to deliver a consistent 24/7 renewable power supply. The holistic design aims to improve system cost, energy conversion, and power regulation—boosting overall project value.
The DC-coupled setup significantly lowers capital expenditure by eliminating the need for a separate Power Conversion System (PCS) and Medium Voltage Station (MVS), while also reducing AC cabling requirements. For a typical 100 MW PV and 200 MWh storage installation, this can cut CAPEX by up to €1 million. At the same time, the solution increases overall energy conversion efficiency by an estimated 3–5%, strengthening long-term project economics.
Beyond hardware, the platform streamlines the entire project lifecycle. It speeds up installation and commissioning for faster grid connection. During operation, adaptive control software maintains peak performance, supported by Sungrow’s localized European service and one-stop aftersales support. Together, these features drive high operational efficiency and aim to maximize asset returns.
An automated smart dispatch function stores surplus solar power during periods of high generation or grid curtailment. The system charges rapidly when production is high and energy prices are low, then discharges during peak demand. This intelligent cycle reduces curtailment losses, stabilizes PV output fluctuations, and delivers grid-friendly power to ensure reliable around-the-clock supply.
Designed for Europe’s increasingly complex and often weak grid conditions, the solution incorporates advanced grid-forming technology. This ensures stable operation across all grid scenarios, delivering rapid inertia support and reducing frequency response time to under 5 milliseconds for swift grid stabilization.
With a robust transient overvoltage tolerance of 1.8 times and real-time monitoring of grid strength indicators such as the Short-Circuit Ratio (SCR), the system can reliably switch between grid-following and grid-forming modes. This guarantees consistent performance during dynamic transitions from weak to strong grid conditions.
Sungrow’s Single-Platform DC-coupled solution has already been deployed in over 90 projects worldwide, including a 100 MW/220 MWh system in Australia and a 181 MW/638 MWh project in Chile. The launch of the PowerTitan 3.0 and this integrated solution in Europe underscores Sungrow’s ongoing commitment to innovation—aiming to accelerate the energy transition by delivering more efficient and reliable PV-plus-storage systems that unlock greater value.
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