The KSTAR BlueSpark Series Residential Energy Storage System (ESS) is a cutting-edge, three-phase, all-in-one hybrid solution designed for high-capacity home energy management. Covering a versatile power range from 4 kW to 12 kW, the lineup includes the E4KT-D22, E5KT-D22, E6KT-D22 (4–6 kW) and E8KT-D22, E10KT-D22, E12KT-D22 (8–12 kW) inverter models, all delivering a robust 400 Vac outputPowered by high-quality EVE LFP (LiFePO4) cells, the system utilizes the BP48100PF1A-G2 battery module (5.12 kWh each). It maintains a human-safe low-voltage design while offering superior scalability, expanding up to 8 battery packs per system for a total capacity of 40.96 kWh (800 Ah).Key advantages include a unique 100% three-phase unbalanced output for flexible load distribution, a DC/AC ratio up to 2, and an IP66-rated enclosure. Its tool-free, no-wiring stackable design ensures effortless installation. Complete with smart scheduling modes (peak shaving/self-consumption), SG Ready heat pump compatibility, and 24/7 cloud management, it offers the ultimate smart energy experience.

Key Features

Extreme Safety & Reliability

•Human-safe low-voltage system architecture for ultimate residential peace of mind •Optional AFCI integrated to actively intercept arc faults and prevent fire risks •Robust IP66 enclosure protection coupled with natural convection cooling

Versatile Adaptability & Mass Expansion

•Supports advanced on-grid and off-grid parallel configurations for resilient backup •Massive modular scalability supporting up to 8 battery packs per system (up to 800Ah / 40.96 kWh) •Quick stackable assembly with zero wiring needed between modules, optimizing installation space

Intelligent Management & O&M

•Smart home energy optimization with Self-Consumption, Peak Shaving, Time-of-Use, and Battery Priority modes •SG Ready Heat Pump compatibility for localized thermal-electrical synergy •Seamless 24/7 cloud monitoring, app-based Bluetooth commissioning, and remote firmware upgrades

High Performance & Power Delivery

•100% three-phase unbalanced output to handle highly uneven household phase loads perfectly •High PV utilization efficiency with a DC/AC ratio up to 2 •Powered by premium EVE LFP cells for enhanced density and prolonged lifespan •Broad power coverage across 4–6 kW and 8–12 kW tiers to supply large luxury homes