Sigenergy SigenStor EC 3.6kW Single Phase Hybrid Inverter + 2 × 6.0kWh Battery | 12.04kWh LFP Storage
Sigenergy SigenStor EC 3.6kW Single Phase Hybrid Inverter + 2 × 6.0kWh Battery | 12.04kWh LFP Storage
3.6kW Hybrid Inverter 12.04kWh LFP Storage ☀️ Solar + Battery + Backup MPN: SIG-EC-3.6-SP-BAT-10.0
The Sigenergy SigenStor EC 3.6 SP with 2 × 6.0 kWh Battery is a complete, modular home energy storage system combining a 3.6kW single-phase hybrid inverter/energy controller with two SigenStor BAT 6.0 LFP battery modules — giving 12.04 kWh total / 11.68 kWh usable capacity straight out of the box. The system is engineered as a solar-first home energy hub: it manages PV generation, battery storage, grid import/export, and household loads through a single intelligent platform, with AI-driven optimisation via the mySigen app. It is expandable to up to 48 kWh storage by adding further battery modules, and can be upgraded with the Sigen Energy Gateway for full whole-home backup and power-cut protection.
What's in this Package
① SigenStor Energy Controller EC 3.6 SP
The brain of the system. A 3.6kW single-phase hybrid inverter with integrated EMS (Energy Management System), dual MPPT solar inputs, battery charge controller, grid management, and AI-powered scheduling. Sits at the top of the SigenStor stack. Dimensions: 700 × 300 × 245mm. Weight: 18kg.
② 2 × SigenStor BAT 6.0 Battery Modules
Two modular 6.02 kWh LFP (LiFePO₄) battery modules. Each module delivers 5.84 kWh usable capacity, 3,000W continuous / 4,500W peak discharge power, and up to 10,000 charge cycles. Modules stack directly below the Energy Controller. Dimensions per module: 767 × 270 × 260mm.
Key Features
Scalability — Storage Configurations (Single Phase)
| Configuration | No. of BAT 6.0 Modules | Total Capacity | Usable Capacity | Max Discharge Power | Stack Height (approx.) |
|---|---|---|---|---|---|
| This package | 2 | 12.04 kWh | 11.68 kWh | 6,000W | ~910mm |
| +1 module | 3 | 18.06 kWh | 17.52 kWh | 9,000W | ~1,180mm |
| +2 modules | 4 | 24.08 kWh | 23.36 kWh | 12,000W | ~1,450mm |
| Maximum (6 modules) | 6 | 36.12 kWh | 35.04 kWh | 18,000W | ~1,990mm |
Battery modules can also be mixed with BAT 5.0 (5.38 kWh) or BAT 8.0 (8.06 kWh) modules. Larger total capacities are achievable with larger modules. Up to 10 EC inverters can be connected in parallel for system expansion up to 480 kWh.
Technical Specifications
| Specification | Detail |
|---|---|
| Package | |
| Part No (this bundle) | SIG-EC-3.6-SP-BAT-10.0 |
| Brand | Sigenergy |
| Contents | 1 × SigenStor EC 3.6 SP Energy Controller + 2 × SigenStor BAT 6.0 Battery Modules |
| Total storage (this bundle) | 12.04 kWh nominal / 11.68 kWh usable |
| Energy Controller — EC 3.6 SP (Inverter / EMS) | |
| Nominal AC output power | 3,680W (3.6 kW) |
| Max. AC output apparent power | 3,680 VA |
| Nominal output voltage | 220 / 230 / 240V single-phase |
| Nominal grid frequency | 50 Hz / 60 Hz |
| Max. efficiency | 98.0% |
| European weighted efficiency | 97.1% |
| Backup peak output (10 seconds) | 5,520W |
| Backup switchover time | 0ms load-side disruption (requires Sigen Energy Gateway) |
| Max. PV input power | 7,360W (DC/AC ratio up to 2.0) |
| Max. DC input voltage | 600V |
| MPPT voltage range | 50–550V |
| Number of MPPT inputs | 2 |
| Max. input current per MPPT | 16A |
| Max. short-circuit current per MPPT | 20A |
| Battery module voltage range | 300–600V (single-phase system) |
| Battery modules supported | 1–6 modules per controller (SigenStor BAT series) |
| Communication | WLAN, Fast Ethernet, RS485, Sigen CommMod (4G/3G/2G, sold separately) |
| Protection rating | IP66 |
| Cooling | Natural convection |
| Dimensions (W × H × D) | 700 × 300 × 245mm |
| Weight | 18kg |
| Operating temperature | -30°C to 60°C |
| Certifications | G98, G100; IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 61000-6-1, IEC/EN 61000-6-2 |
| Warranty | 10 years |
| Battery Module — SigenStor BAT 6.0 (× 2 supplied) | |
| Battery chemistry | LiFePO₄ (LFP — Lithium Iron Phosphate) |
| Total energy capacity (per module) | 6.02 kWh |
| Usable energy capacity (per module) | 5.84 kWh (97% depth of discharge) |
| Max. continuous charge/discharge power | 3,000W per module |
| Peak charge/discharge power (10 sec) | 4,500W per module |
| Round-trip efficiency | 98% |
| Cycle life | Up to 10,000 cycles (at 25°C, 0.5C, SOH ≥ 60%) |
| Battery module voltage (single phase) | 300–600V |
| Dimensions per module (W × H × D) | 767 × 270 × 260mm |
| Weight per module | ~55kg (based on BAT 5.0 reference; BAT 6.0 similar) |
| Protection rating | IP66 |
| Cooling | Natural convection (passive — no fans) |
| Operating temperature | -20°C to 55°C |
| Storage temperature | -25°C to 60°C |
| Mounting | Floor-standing (stackable) or wall-mounted |
| Standards | IEC/EN 62619, IEC/EN 63056, UN 38.3 |
| Warranty | 10 years (70% capacity retention guaranteed) |
⚠️ Important — backup power requires the Sigen Energy Gateway: The EC 3.6 SP inverter and BAT 6.0 batteries alone provide solar self-consumption, tariff optimisation, and export — but whole-home backup power during a power cut requires the Sigen Energy Gateway (sold separately). The Gateway provides the 0ms switchover and isolates the house from the grid during an outage. Without it, the system will shut down on grid failure in accordance with G98/G100 anti-islanding regulations.
What's in the Box
- 1 × SigenStor Energy Controller EC 3.6 SP (single-phase hybrid inverter/EMS)
- 2 × SigenStor BAT 6.0 battery modules (6.02 kWh each)
- Stack base and mounting hardware
- Inter-module connection cables
- Quick installation guide
Not included: Sigen Energy Gateway (required for backup/power-cut protection); Sigen CommMod (for 4G remote monitoring without home Wi-Fi); Sigen Power Sensor (required for dynamic load management with the Sigen EV AC Charger); additional battery modules (expandable at any time); solar panels and DC cabling. MCS/DNO notification may be required for grid connection — consult your installer.
FAQs
Do I need solar panels to use this system?
No — the SigenStor can operate as a standalone battery storage system, charging from the grid during cheap off-peak periods (such as Octopus Go or Economy 7) and discharging during peak rate periods to reduce your electricity bills. Solar panels enhance savings further by allowing free solar energy to be stored and used at night, but are not required for the system to function. If you add solar later, the system is fully ready — just connect PV strings to the two MPPT inputs on the Energy Controller.
Can I add more batteries later?
Yes. The SigenStor platform is designed for incremental expansion. This package comes with 2 × BAT 6.0 modules, and you can add up to 4 more to the same tower — up to 6 modules total per Energy Controller. Batteries can also be mixed (BAT 5.0, 6.0, or 8.0 kWh modules), with Sigenergy's per-module optimizer managing the differences in capacity and state of charge. No rewiring of the inverter is needed to add batteries.
How does this compare to the Tesla Powerwall 3?
Both use LFP chemistry and integrate solar and storage. The key differences: SigenStor is modular and expandable (Powerwall 3 comes in fixed 13.5 kWh units requiring multiple units to scale); SigenStor offers an optional DC-coupled 25kW V2H/V2G EV charger (significantly faster than any wall-mounted AC charger); and SigenStor's dynamic tariff integration includes automatic Octopus Agile API sync. Powerwall has the advantage of a longer established track record and simpler all-in-one installation. The 3.6kW inverter in this bundle is appropriate for smaller homes or retrofit scenarios — larger homes with higher PV arrays should consider the 4.6, 5.0 or 6.0kW EC variants.
Is this system eligible for the UK Smart Export Guarantee (SEG)?
Yes. The SigenStor EC is G98 and G100 certified, enabling registration with a DNO for grid export. You can apply for SEG payments from an eligible supplier once your system is MCS-certified and the export meter/generation meter is registered. The mySigen app tracks export volumes for your records.
What is the difference between the EC 3.6 SP and the Sigen Hybrid Inverter?
The SigenStor Energy Controller (EC SP series) is specifically designed to sit at the top of the SigenStor battery stack and physically integrate with the BAT modules via direct DC bus connections — it is the inverter, EMS, and battery charge controller in one unit, and the batteries mount directly beneath it. The Sigen Hybrid Inverter is a separate wall-mounted product designed for installs where the battery cannot be floor-stacked (e.g. the Sigen Battery BC wall-mounted units). For standard SigenStor installations, the EC SP is the correct choice.
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Sigenergy SigenStor EC 3.6kW Single Phase Hybrid Inverter + 2 × 6.0kWh Battery | 12.04kWh LFP Storage
3.6kW Hybrid Inverter 12.04kWh LFP Storage ☀️ Solar + Battery + Backup MPN: SIG-EC-3.6-SP-BAT-10.0
The Sigenergy SigenStor EC 3.6 SP with 2 × 6.0 kWh Battery is a complete, modular home energy storage system combining a 3.6kW single-phase hybrid inverter/energy controller with two SigenStor BAT 6.0 LFP battery modules — giving 12.04 kWh total / 11.68 kWh usable capacity straight out of the box. The system is engineered as a solar-first home energy hub: it manages PV generation, battery storage, grid import/export, and household loads through a single intelligent platform, with AI-driven optimisation via the mySigen app. It is expandable to up to 48 kWh storage by adding further battery modules, and can be upgraded with the Sigen Energy Gateway for full whole-home backup and power-cut protection.
What's in this Package
① SigenStor Energy Controller EC 3.6 SP
The brain of the system. A 3.6kW single-phase hybrid inverter with integrated EMS (Energy Management System), dual MPPT solar inputs, battery charge controller, grid management, and AI-powered scheduling. Sits at the top of the SigenStor stack. Dimensions: 700 × 300 × 245mm. Weight: 18kg.
② 2 × SigenStor BAT 6.0 Battery Modules
Two modular 6.02 kWh LFP (LiFePO₄) battery modules. Each module delivers 5.84 kWh usable capacity, 3,000W continuous / 4,500W peak discharge power, and up to 10,000 charge cycles. Modules stack directly below the Energy Controller. Dimensions per module: 767 × 270 × 260mm.
Key Features
Scalability — Storage Configurations (Single Phase)
| Configuration | No. of BAT 6.0 Modules | Total Capacity | Usable Capacity | Max Discharge Power | Stack Height (approx.) |
|---|---|---|---|---|---|
| This package | 2 | 12.04 kWh | 11.68 kWh | 6,000W | ~910mm |
| +1 module | 3 | 18.06 kWh | 17.52 kWh | 9,000W | ~1,180mm |
| +2 modules | 4 | 24.08 kWh | 23.36 kWh | 12,000W | ~1,450mm |
| Maximum (6 modules) | 6 | 36.12 kWh | 35.04 kWh | 18,000W | ~1,990mm |
Battery modules can also be mixed with BAT 5.0 (5.38 kWh) or BAT 8.0 (8.06 kWh) modules. Larger total capacities are achievable with larger modules. Up to 10 EC inverters can be connected in parallel for system expansion up to 480 kWh.
Technical Specifications
| Specification | Detail |
|---|---|
| Package | |
| Part No (this bundle) | SIG-EC-3.6-SP-BAT-10.0 |
| Brand | Sigenergy |
| Contents | 1 × SigenStor EC 3.6 SP Energy Controller + 2 × SigenStor BAT 6.0 Battery Modules |
| Total storage (this bundle) | 12.04 kWh nominal / 11.68 kWh usable |
| Energy Controller — EC 3.6 SP (Inverter / EMS) | |
| Nominal AC output power | 3,680W (3.6 kW) |
| Max. AC output apparent power | 3,680 VA |
| Nominal output voltage | 220 / 230 / 240V single-phase |
| Nominal grid frequency | 50 Hz / 60 Hz |
| Max. efficiency | 98.0% |
| European weighted efficiency | 97.1% |
| Backup peak output (10 seconds) | 5,520W |
| Backup switchover time | 0ms load-side disruption (requires Sigen Energy Gateway) |
| Max. PV input power | 7,360W (DC/AC ratio up to 2.0) |
| Max. DC input voltage | 600V |
| MPPT voltage range | 50–550V |
| Number of MPPT inputs | 2 |
| Max. input current per MPPT | 16A |
| Max. short-circuit current per MPPT | 20A |
| Battery module voltage range | 300–600V (single-phase system) |
| Battery modules supported | 1–6 modules per controller (SigenStor BAT series) |
| Communication | WLAN, Fast Ethernet, RS485, Sigen CommMod (4G/3G/2G, sold separately) |
| Protection rating | IP66 |
| Cooling | Natural convection |
| Dimensions (W × H × D) | 700 × 300 × 245mm |
| Weight | 18kg |
| Operating temperature | -30°C to 60°C |
| Certifications | G98, G100; IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 61000-6-1, IEC/EN 61000-6-2 |
| Warranty | 10 years |
| Battery Module — SigenStor BAT 6.0 (× 2 supplied) | |
| Battery chemistry | LiFePO₄ (LFP — Lithium Iron Phosphate) |
| Total energy capacity (per module) | 6.02 kWh |
| Usable energy capacity (per module) | 5.84 kWh (97% depth of discharge) |
| Max. continuous charge/discharge power | 3,000W per module |
| Peak charge/discharge power (10 sec) | 4,500W per module |
| Round-trip efficiency | 98% |
| Cycle life | Up to 10,000 cycles (at 25°C, 0.5C, SOH ≥ 60%) |
| Battery module voltage (single phase) | 300–600V |
| Dimensions per module (W × H × D) | 767 × 270 × 260mm |
| Weight per module | ~55kg (based on BAT 5.0 reference; BAT 6.0 similar) |
| Protection rating | IP66 |
| Cooling | Natural convection (passive — no fans) |
| Operating temperature | -20°C to 55°C |
| Storage temperature | -25°C to 60°C |
| Mounting | Floor-standing (stackable) or wall-mounted |
| Standards | IEC/EN 62619, IEC/EN 63056, UN 38.3 |
| Warranty | 10 years (70% capacity retention guaranteed) |
⚠️ Important — backup power requires the Sigen Energy Gateway: The EC 3.6 SP inverter and BAT 6.0 batteries alone provide solar self-consumption, tariff optimisation, and export — but whole-home backup power during a power cut requires the Sigen Energy Gateway (sold separately). The Gateway provides the 0ms switchover and isolates the house from the grid during an outage. Without it, the system will shut down on grid failure in accordance with G98/G100 anti-islanding regulations.
What's in the Box
- 1 × SigenStor Energy Controller EC 3.6 SP (single-phase hybrid inverter/EMS)
- 2 × SigenStor BAT 6.0 battery modules (6.02 kWh each)
- Stack base and mounting hardware
- Inter-module connection cables
- Quick installation guide
Not included: Sigen Energy Gateway (required for backup/power-cut protection); Sigen CommMod (for 4G remote monitoring without home Wi-Fi); Sigen Power Sensor (required for dynamic load management with the Sigen EV AC Charger); additional battery modules (expandable at any time); solar panels and DC cabling. MCS/DNO notification may be required for grid connection — consult your installer.
FAQs
Do I need solar panels to use this system?
No — the SigenStor can operate as a standalone battery storage system, charging from the grid during cheap off-peak periods (such as Octopus Go or Economy 7) and discharging during peak rate periods to reduce your electricity bills. Solar panels enhance savings further by allowing free solar energy to be stored and used at night, but are not required for the system to function. If you add solar later, the system is fully ready — just connect PV strings to the two MPPT inputs on the Energy Controller.
Can I add more batteries later?
Yes. The SigenStor platform is designed for incremental expansion. This package comes with 2 × BAT 6.0 modules, and you can add up to 4 more to the same tower — up to 6 modules total per Energy Controller. Batteries can also be mixed (BAT 5.0, 6.0, or 8.0 kWh modules), with Sigenergy's per-module optimizer managing the differences in capacity and state of charge. No rewiring of the inverter is needed to add batteries.
How does this compare to the Tesla Powerwall 3?
Both use LFP chemistry and integrate solar and storage. The key differences: SigenStor is modular and expandable (Powerwall 3 comes in fixed 13.5 kWh units requiring multiple units to scale); SigenStor offers an optional DC-coupled 25kW V2H/V2G EV charger (significantly faster than any wall-mounted AC charger); and SigenStor's dynamic tariff integration includes automatic Octopus Agile API sync. Powerwall has the advantage of a longer established track record and simpler all-in-one installation. The 3.6kW inverter in this bundle is appropriate for smaller homes or retrofit scenarios — larger homes with higher PV arrays should consider the 4.6, 5.0 or 6.0kW EC variants.
Is this system eligible for the UK Smart Export Guarantee (SEG)?
Yes. The SigenStor EC is G98 and G100 certified, enabling registration with a DNO for grid export. You can apply for SEG payments from an eligible supplier once your system is MCS-certified and the export meter/generation meter is registered. The mySigen app tracks export volumes for your records.
What is the difference between the EC 3.6 SP and the Sigen Hybrid Inverter?
The SigenStor Energy Controller (EC SP series) is specifically designed to sit at the top of the SigenStor battery stack and physically integrate with the BAT modules via direct DC bus connections — it is the inverter, EMS, and battery charge controller in one unit, and the batteries mount directly beneath it. The Sigen Hybrid Inverter is a separate wall-mounted product designed for installs where the battery cannot be floor-stacked (e.g. the Sigen Battery BC wall-mounted units). For standard SigenStor installations, the EC SP is the correct choice.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
3.6kW Hybrid Inverter 12.04kWh LFP Storage ☀️ Solar + Battery + Backup MPN: SIG-EC-3.6-SP-BAT-10.0
The Sigenergy SigenStor EC 3.6 SP with 2 × 6.0 kWh Battery is a complete, modular home energy storage system combining a 3.6kW single-phase hybrid inverter/energy controller with two SigenStor BAT 6.0 LFP battery modules — giving 12.04 kWh total / 11.68 kWh usable capacity straight out of the box. The system is engineered as a solar-first home energy hub: it manages PV generation, battery storage, grid import/export, and household loads through a single intelligent platform, with AI-driven optimisation via the mySigen app. It is expandable to up to 48 kWh storage by adding further battery modules, and can be upgraded with the Sigen Energy Gateway for full whole-home backup and power-cut protection.
What's in this Package
① SigenStor Energy Controller EC 3.6 SP
The brain of the system. A 3.6kW single-phase hybrid inverter with integrated EMS (Energy Management System), dual MPPT solar inputs, battery charge controller, grid management, and AI-powered scheduling. Sits at the top of the SigenStor stack. Dimensions: 700 × 300 × 245mm. Weight: 18kg.
② 2 × SigenStor BAT 6.0 Battery Modules
Two modular 6.02 kWh LFP (LiFePO₄) battery modules. Each module delivers 5.84 kWh usable capacity, 3,000W continuous / 4,500W peak discharge power, and up to 10,000 charge cycles. Modules stack directly below the Energy Controller. Dimensions per module: 767 × 270 × 260mm.
Key Features
Scalability — Storage Configurations (Single Phase)
| Configuration | No. of BAT 6.0 Modules | Total Capacity | Usable Capacity | Max Discharge Power | Stack Height (approx.) |
|---|---|---|---|---|---|
| This package | 2 | 12.04 kWh | 11.68 kWh | 6,000W | ~910mm |
| +1 module | 3 | 18.06 kWh | 17.52 kWh | 9,000W | ~1,180mm |
| +2 modules | 4 | 24.08 kWh | 23.36 kWh | 12,000W | ~1,450mm |
| Maximum (6 modules) | 6 | 36.12 kWh | 35.04 kWh | 18,000W | ~1,990mm |
Battery modules can also be mixed with BAT 5.0 (5.38 kWh) or BAT 8.0 (8.06 kWh) modules. Larger total capacities are achievable with larger modules. Up to 10 EC inverters can be connected in parallel for system expansion up to 480 kWh.
Technical Specifications
| Specification | Detail |
|---|---|
| Package | |
| Part No (this bundle) | SIG-EC-3.6-SP-BAT-10.0 |
| Brand | Sigenergy |
| Contents | 1 × SigenStor EC 3.6 SP Energy Controller + 2 × SigenStor BAT 6.0 Battery Modules |
| Total storage (this bundle) | 12.04 kWh nominal / 11.68 kWh usable |
| Energy Controller — EC 3.6 SP (Inverter / EMS) | |
| Nominal AC output power | 3,680W (3.6 kW) |
| Max. AC output apparent power | 3,680 VA |
| Nominal output voltage | 220 / 230 / 240V single-phase |
| Nominal grid frequency | 50 Hz / 60 Hz |
| Max. efficiency | 98.0% |
| European weighted efficiency | 97.1% |
| Backup peak output (10 seconds) | 5,520W |
| Backup switchover time | 0ms load-side disruption (requires Sigen Energy Gateway) |
| Max. PV input power | 7,360W (DC/AC ratio up to 2.0) |
| Max. DC input voltage | 600V |
| MPPT voltage range | 50–550V |
| Number of MPPT inputs | 2 |
| Max. input current per MPPT | 16A |
| Max. short-circuit current per MPPT | 20A |
| Battery module voltage range | 300–600V (single-phase system) |
| Battery modules supported | 1–6 modules per controller (SigenStor BAT series) |
| Communication | WLAN, Fast Ethernet, RS485, Sigen CommMod (4G/3G/2G, sold separately) |
| Protection rating | IP66 |
| Cooling | Natural convection |
| Dimensions (W × H × D) | 700 × 300 × 245mm |
| Weight | 18kg |
| Operating temperature | -30°C to 60°C |
| Certifications | G98, G100; IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 61000-6-1, IEC/EN 61000-6-2 |
| Warranty | 10 years |
| Battery Module — SigenStor BAT 6.0 (× 2 supplied) | |
| Battery chemistry | LiFePO₄ (LFP — Lithium Iron Phosphate) |
| Total energy capacity (per module) | 6.02 kWh |
| Usable energy capacity (per module) | 5.84 kWh (97% depth of discharge) |
| Max. continuous charge/discharge power | 3,000W per module |
| Peak charge/discharge power (10 sec) | 4,500W per module |
| Round-trip efficiency | 98% |
| Cycle life | Up to 10,000 cycles (at 25°C, 0.5C, SOH ≥ 60%) |
| Battery module voltage (single phase) | 300–600V |
| Dimensions per module (W × H × D) | 767 × 270 × 260mm |
| Weight per module | ~55kg (based on BAT 5.0 reference; BAT 6.0 similar) |
| Protection rating | IP66 |
| Cooling | Natural convection (passive — no fans) |
| Operating temperature | -20°C to 55°C |
| Storage temperature | -25°C to 60°C |
| Mounting | Floor-standing (stackable) or wall-mounted |
| Standards | IEC/EN 62619, IEC/EN 63056, UN 38.3 |
| Warranty | 10 years (70% capacity retention guaranteed) |
⚠️ Important — backup power requires the Sigen Energy Gateway: The EC 3.6 SP inverter and BAT 6.0 batteries alone provide solar self-consumption, tariff optimisation, and export — but whole-home backup power during a power cut requires the Sigen Energy Gateway (sold separately). The Gateway provides the 0ms switchover and isolates the house from the grid during an outage. Without it, the system will shut down on grid failure in accordance with G98/G100 anti-islanding regulations.
What's in the Box
- 1 × SigenStor Energy Controller EC 3.6 SP (single-phase hybrid inverter/EMS)
- 2 × SigenStor BAT 6.0 battery modules (6.02 kWh each)
- Stack base and mounting hardware
- Inter-module connection cables
- Quick installation guide
Not included: Sigen Energy Gateway (required for backup/power-cut protection); Sigen CommMod (for 4G remote monitoring without home Wi-Fi); Sigen Power Sensor (required for dynamic load management with the Sigen EV AC Charger); additional battery modules (expandable at any time); solar panels and DC cabling. MCS/DNO notification may be required for grid connection — consult your installer.
FAQs
Do I need solar panels to use this system?
No — the SigenStor can operate as a standalone battery storage system, charging from the grid during cheap off-peak periods (such as Octopus Go or Economy 7) and discharging during peak rate periods to reduce your electricity bills. Solar panels enhance savings further by allowing free solar energy to be stored and used at night, but are not required for the system to function. If you add solar later, the system is fully ready — just connect PV strings to the two MPPT inputs on the Energy Controller.
Can I add more batteries later?
Yes. The SigenStor platform is designed for incremental expansion. This package comes with 2 × BAT 6.0 modules, and you can add up to 4 more to the same tower — up to 6 modules total per Energy Controller. Batteries can also be mixed (BAT 5.0, 6.0, or 8.0 kWh modules), with Sigenergy's per-module optimizer managing the differences in capacity and state of charge. No rewiring of the inverter is needed to add batteries.
How does this compare to the Tesla Powerwall 3?
Both use LFP chemistry and integrate solar and storage. The key differences: SigenStor is modular and expandable (Powerwall 3 comes in fixed 13.5 kWh units requiring multiple units to scale); SigenStor offers an optional DC-coupled 25kW V2H/V2G EV charger (significantly faster than any wall-mounted AC charger); and SigenStor's dynamic tariff integration includes automatic Octopus Agile API sync. Powerwall has the advantage of a longer established track record and simpler all-in-one installation. The 3.6kW inverter in this bundle is appropriate for smaller homes or retrofit scenarios — larger homes with higher PV arrays should consider the 4.6, 5.0 or 6.0kW EC variants.
Is this system eligible for the UK Smart Export Guarantee (SEG)?
Yes. The SigenStor EC is G98 and G100 certified, enabling registration with a DNO for grid export. You can apply for SEG payments from an eligible supplier once your system is MCS-certified and the export meter/generation meter is registered. The mySigen app tracks export volumes for your records.
What is the difference between the EC 3.6 SP and the Sigen Hybrid Inverter?
The SigenStor Energy Controller (EC SP series) is specifically designed to sit at the top of the SigenStor battery stack and physically integrate with the BAT modules via direct DC bus connections — it is the inverter, EMS, and battery charge controller in one unit, and the batteries mount directly beneath it. The Sigen Hybrid Inverter is a separate wall-mounted product designed for installs where the battery cannot be floor-stacked (e.g. the Sigen Battery BC wall-mounted units). For standard SigenStor installations, the EC SP is the correct choice.
