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SigenStor Energy Controller Specifications
| Model | SigenStor EC SP US |
| Nominal Output Power | 3.8 / 4.8 / 5.7 / 7.6 / 9.6 / 11.5 kW (field configurable) |
| Max. PV Input Power | 7.68 – 23 kW (2:1 DC/AC ratio) |
| Number of MPPTs | 4 Independent Trackers |
| MPPT Voltage Range | 50 – 550 V |
| Max. DC Input Voltage | 600 V |
| Max. Current per MPPT | 16 A |
| Max. Efficiency | 97.8% |
| Nominal Output Voltage | 240/120 V Split Phase |
| Backup Switchover Time | 0 ms |
| Peak Backup Power (10s) | 8.64 – 17.1 kW (configuration dependent) |
| Compatible Batteries | SigenStor BAT 6.0 / 9.0 US |
| Dimensions (W × H × D) | 27.6 × 11.8 × 10.2 in |
| Weight | 77.1 lbs (35 kg) |
| Enclosure Type | NEMA 4X |
| Cooling Method | Smart Air Cooling |
| Communication | WLAN, Ethernet, RS485, 4G/3G (optional) |
Complete roof mounted solar systems engineered for durability and ease of installation. Our premium kits include IronRidge XR rail systems, compatible with all our solar panels and available for all roof types, with special options for tile, flat, and metal roofs at competitive wholesale pricing.
Sigenergy SigenStor Field-Configurable Energy Controller
SKU SIG-EC-SP-US-SPLIT
Sigenergy SigenStor Field-Configurable Energy Controller - 3.8kW to 11.5kW
The Sigenergy SigenStor EC SP US is a field-configurable hybrid inverter and energy management system offering single-SKU flexibility across six power ratings from 3.8kW to 11.5kW for residential and light commercial solar-plus-storage applications. This advanced energy controller integrates four independent MPPT channels supporting up to 2:1 DC-to-AC oversizing ratios, enabling maximum solar harvest with PV array capacity ranging from 7.68kW to 23kW depending on configuration. The system delivers 97.8% maximum efficiency across all power levels with split-phase 240/120V output, providing both grid-tied operation and seamless backup power transition with 0ms switchover time during utility outages.
Backup power capability delivers rated output power at 240V with peak power ratings up to 17.1kW for 10 seconds on higher-capacity models, handling motor starting loads and high-demand appliance operation during grid outages.
Sigenergy SigenStor Energy Controller Features
- Installation Flexibility: Single SKU field-configurable to six power ratings eliminates inventory management complexity and enables right-sizing for specific application requirements
- Maximum Solar Utilization: Four independent MPPTs with 2:1 DC/AC oversizing capability maximize energy harvest from complex roof configurations and optimize production during low-irradiance conditions
- Intelligent Energy Management: Integrated EMS optimizes power flow between solar, storage, grid, and loads based on time-of-use rates, self-consumption goals, and backup reserve requirements
- Comprehensive Safety: Integrated AFCI protection, NEC rapid shutdown compliance, and all-round system monitoring ensure safe operation throughout system lifecycle
- High Peak Power Capability: Up to 17.1kW peak output for 10 seconds on higher-capacity models handles large motor starting currents and simultaneous high-demand loads during backup operation
Sigenergy SigenStor EC Certifications
The SigenStor EC hybrid inverter meets international safety, performance, and grid interconnection standards for deployment in diverse regulatory environments.
- UL 1741 - Inverters, converters, controllers and interconnection system equipment for distributed energy resources
- UL 1741 SB - Supplement B for utility interactive inverter smart grid functionality
- UL 1741 CRD - Certified to UL 1741 Certification Requirements Decision for advanced inverter functionality
- IEEE 1547-2018 - Standard for interconnection and interoperability of distributed energy resources with associated electric power systems interfaces
- IEEE 1547.1-2020 - Conformance test procedures for equipment interconnecting distributed energy resources with electric power systems
- UL 1699B - Photovoltaic (PV) DC arc-fault circuit protection
- CA Proposition 65 - California compliance for chemical exposure warnings
- FCC Part 15 Class B - Federal Communications Commission electromagnetic interference standards for residential equipment
Sigenergy SigenStor Energy Controller Technical Review
The four independent MPPT channels with 16A current capacity per tracker optimize energy harvest in complex installations where roof sections face different orientations, experience varying shading patterns, or utilize mixed module types. The 2:1 DC-to-AC oversizing capability allows PV arrays up to 200% of inverter rating, significantly improving energy production during morning, evening, and cloudy conditions when irradiance levels fall below standard test conditions. This oversizing ratio is particularly valuable in northern latitudes where low sun angles and diffuse radiation dominate seasonal production profiles.
The integrated Energy Management System coordinates real-time power flow optimization across four energy domains: solar generation, battery storage, grid connection, and load consumption. Advanced algorithms implement time-of-use arbitrage strategies charging batteries during off-peak utility rates and discharging during peak periods, self-consumption maximization routing excess solar production to battery storage before grid export, and backup reserve management maintaining minimum battery state-of-charge for emergency power scenarios.
Sigenergy SigenStor Product Ecosystem
Sigen LoadHub
Intelligent energy management hub that automatically detects grid outages and provides seamless 0ms transition to backup power, ensuring uninterrupted operation of your essential loads.
Sigen 6kw Battery Module
Compact LiFePO4 battery module featuring premium 314Ah cells rated for 10,000 cycles, delivering 6.02kWh capacity with 100% depth of discharge and 3kW continuous power output.
Sigen 9kw Battery Module
High-capacity LiFePO4 battery module with 9.04kWh storage and 4.6kW continuous power, featuring advanced battery optimization that allows mixing old and new modules for easy system expansion.
Sigen EV DC Charging Module
Future-proof 25kW bi-directional DC charger that enables Vehicle-to-Home (V2H) and Vehicle-to-Grid (V2G) capabilities, delivering up to 150km of driving range per hour with direct solar charging.
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