Risen Energy’s recently launched C&I storage solution supports 2-charging/2-discharging daily cycles for ancillary services, such as power arbitrage or peak load shifting
Its PCS has an efficiency of up to 99.1%, while the system RTE reaches to 90%
This system adopts a liquid-cooling-based mechanism for operational temperature control
Risen Energy, a well-known Chinese PV module maker that recently expanded into inverter, energy storage, and building-integrated photovoltaic (BIPV) solutions, has launched its latest energy storage system for captive commercial and industrial (C&I) applications.
Among the product’s key features, the company emphasizes the power conversion system (PCS) capacity and the adoption of silicon carbide (SiC)-based switching modules in place of insulated gate bipolar transistors (IGBTs). This system comprises battery banks and PCS in a single enclosure that synchronizes with the consumer’s local grid. A PCS is a bidirectional inverter (charging/discharging) that acts as an intermediate conversion system between battery banks and the AC grid. The company states that SiC-based switching devices, with a 3x higher switching frequency than conventional IGBT-based alternatives, exhibit unspecified lower conduction losses during conversion processes, either rectification (grid AC-to-battery DC) or inversion (battery DC-to-AC). This attribute boosts the conversion capacity to 131 kW from 125 kW with a wider operational temperature range (unquantified) without derating. It also supports high-frequency C&I ancillary operations, such as 2 charging/discharging cycles of up to 261 kWh per day for power arbitrage (time-of-day tariffs) and daily peak-load shifting management. It helps capture favorable tariffs for short durations and matches narrow windows of demand in real time. The company claims that lower passive-device heat losses (up to 40% lower) also support the use of smaller components (capacitors, resistors, and inductors, among others) in the power modules, eventually reducing the PCS’s footprint and increasing conversion efficiency to 99.1%. Altogether, these attributes contribute to achieving maximum system round-trip-efficiency (RTE) (the percentage of battery stored energy converted to AC power) of up to 90%.
This range of operations can be automatically controlled using AI-assisted operations on Risen cloud platforms, eliminating the need for operators.
From a protection and safety perspective, the PCS enclosure is IP66-rated, and an IP67-rated pack-level enclosure is available as an add-on. In addition, it has a fire suppression system that combines water-based suppression, aerosol-based fire-retardant system, and an optional firefighting system at the battery pack level. This storage system controls the operational temperature of the battery and PCS through a circulating liquid medium.
The company cites a C&I case study showing additional annual revenue of more than $1,300 from up to 12,210 kWh of additional cycled energy (2 charging/2 discharging cycles daily) over up to 330 days using this platform compared to air-cooled alternatives.