C&I

Solis FlexCore-ID energy storage system 60–261 kWh · indoor

Solis FlexCore-ID (60–261 kWh) is a modular stackable energy storage system (C&I ESS) for indoor installation that works with hybrid inverters from 15 to 125 kW. It is designed for commercial and industrial facilities, with easy vertical assembly and capacity scaling up to 1500 kWh.

Models

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Solis FlexCore-ID energy storage system 60–261 kWh · indoor · S6-EH3P 30K-H(21A)

Overview

Solis FlexCore-ID (60–261 kWh) is a highly efficient modular energy storage system (Commercial & Industrial ESS) developed specifically for indoor installation in the C&I sector. It is the optimal choice for enterprises, production facilities, business centres, warehouse complexes and sites with critical power-continuity requirements.

The key advantage of FlexCore-ID is its lightweight stackable battery PACK design with Plug-and-Play technology. Each 20 kWh module weighs just 151 kg, so the equipment can easily be moved through narrow doorways and corridors without heavy lifting machinery or a complex foundation. Within a single cluster, capacity scales flexibly from 60 to 261 kWh, and with up to 6 clusters connected in parallel the total energy reserve extends to 1560 kWh.

The system is built on safe LiFePO₄ cells (314 Ah, Grade A+) rated for over 8,000 cycles. The model features a 5-level fire safety system (including aerosol fire suppression and ceramic-mica insulation), supports seamless switchover to backup power (< 10 ms), handles 200% PV oversizing, and offers Peak Shaving and Zero Export functions along with smart management via Solis AI and SolisCloud.

Technical specifications

Models

SKU: FlexCore Indoor Stackable Series S6-EH3P 30K-H(21A)

DC input (PV side)

Recommended max. PV array size: 60 kW
Recommended max. PV array size: 80 kW
Recommended max. PV array size: 100 kW
Recommended max. PV array size: 100 kW
Recommended max. PV array size: 160 kW
Recommended max. PV array size: 200 kW
Recommended max. PV array size: 250 kW
Max. usable PV module input power: 60 kW
Max. usable PV module input power: 80 kW
Max. usable PV module input power: 100 kW
Max. usable PV module input power: 100 kW
Max. usable PV module input power: 160 kW
Max. usable PV module input power: 200 kW
Max. usable PV module input power: 250 kW
Maximum input voltage: 1000 V
Rated voltage: 600 V
Start-up voltage: 180 V
MPPT voltage range: 150 - 850 V
MPPT voltage range: 150 - 850 V
MPPT voltage range: 150 - 850 V
MPPT voltage range: 150 - 850 V
MPPT voltage range: 150 - 950 V
MPPT voltage range: 150 - 950 V
MPPT voltage range: 150 - 950 V
Max. input current: 3 × 42 A
Max. input current: 4 × 42 A
Max. input current: 4 × 42 A
Max. input current: 4 × 42 A
Max. input current: 10 × 42 A
Max. input current: 10 × 42 A
Max. input current: 10 × 42 A
Max. current at the DC input: 42 A
Max. short-circuit current: 3 × 60 A
Max. short-circuit current: 4 × 60 A
Max. short-circuit current: 4 × 60 A
Max. short-circuit current: 4 × 60 A
Max. short-circuit current: 10 × 60 A
Max. short-circuit current: 10 × 60 A
Max. short-circuit current: 10 × 60 A
Number of MPPTs / max. inputs per MPPT: 3 / 6
Number of MPPTs / max. inputs per MPPT: 4 / 8
Number of MPPTs / max. inputs per MPPT: 4 / 8
Number of MPPTs / max. inputs per MPPT: 4 / 8
Number of MPPTs / max. inputs per MPPT: 10 / 20
Number of MPPTs / max. inputs per MPPT: 10 / 20
Number of MPPTs / max. inputs per MPPT: 10 / 20

Battery

Battery type: Lithium-ion
Battery voltage range: 150 - 800 V
Battery voltage range: 150 - 800 V
Battery voltage range: 150 - 800 V
Battery voltage range: 150 - 800 V
Battery voltage range: 300 - 950 V
Battery voltage range: 300 - 950 V
Battery voltage range: 300 - 950 V
Maximum charge / discharge current: 80 A × 2 / 80 A × 2
Maximum charge / discharge current: 80 A × 2 / 80 A × 2
Maximum charge / discharge current: 80 A × 2 / 80 A × 2
Maximum charge / discharge current: 84 A × 2 / 84 A × 2
Maximum charge / discharge current: 100 A × 2 / 100 A × 2
Maximum charge / discharge current: 100 A × 2 / 100 A × 2
Maximum charge / discharge current: 100 A × 2 / 100 A × 2
Number of battery ports / BMS ports: 2
Max. charge / discharge current per port: 80 A
Max. charge / discharge current per port: 80 A
Max. charge / discharge current per port: 80 A
Max. charge / discharge current per port: 84 A
Max. charge / discharge current per port: 100 A
Max. charge / discharge current per port: 100 A
Max. charge / discharge current per port: 100 A
Communication: CAN / RS485

AC output (grid side)

Rated output power: 30 kW
Rated output power: 40 kW
Rated output power: 50 kW
Rated output power: 60 kW
Rated output power: 80 kW
Rated output power: 100 kW
Rated output power: 125 kW
Max. apparent output power: 30 kVA
Max. apparent output power: 40 kVA
Max. apparent output power: 50 kVA
Max. apparent output power: 60 kVA
Max. apparent output power: 80 kVA
Max. apparent output power: 100 kVA
Max. apparent output power: 125 kVA
Rated grid voltage: 3/N/PE, 220 V / 380 V, 230 V / 400 V
Rated grid frequency: 50 Hz / 60 Hz
Rated grid output current: 45.6 A / 43.3 A
Rated grid output current: 60.8 A / 57.7 A
Rated grid output current: 76 A / 72.2 A
Rated grid output current: 91.2 A / 86.6 A
Rated grid output current: 121.6 A / 115.5 A
Rated grid output current: 151.9 A / 144.3 A
Rated grid output current: 189.9 A / 180.4 A
Power factor: > 0.99 (0.8 leading - 0.8 lagging)
THDi: < 3%

AC input (grid side)

Max. input power: 60 kW
Max. input power: 60 kW
Max. input power: 100 kW
Max. input power: 100 kW / 105 kW
Max. input power: 160 kW
Max. input power: 164.5 kW / 173.2 kW
Max. input power: 164.5 kW / 173.2 kW
Input voltage range: 304 - 460 V
Max. input current: 91.2 A / 86.6 A
Max. input current: 121.6 A / 115.4 A 152 A / 144.4 A
Max. input current: 121.6 A / 115.4 A 152 A / 144.4 A
Max. input current: 152 A / 152 A
Max. input current: 250 A
Max. input current: 250 A
Max. input current: 250 A

AC output (backup output)

Rated output power: 30 kW
Rated output power: 40 kW
Rated output power: 50 kW
Rated output power: 60 kW
Rated output power: 80 kW
Rated output power: 100 kW
Rated output power: 125 kW
Max. apparent output power: 80-100K: 1.6 times of rated power, 10 s; 2 times of rated power, 200 ms;
Backup switchover time: < 10 ms
Rated output voltage: 3/N/PE, 220 V / 380 V, 230 V / 400 V
Rated frequency: 50 Hz / 60 Hz
Rated output current: 45.6 A / 43.3 A
Rated output current: 60.8 A / 57.7 A
Rated output current: 76 A / 72.2 A
Rated output current: 91.2 A / 86.6 A
Rated output current: 121.6 A / 115.5 A
Rated output current: 151.9 A / 144.3 A
Rated output current: 189.9 A / 180.4 A
Max. AC pass-through current: 45.6 A / 43.3 A
Max. AC pass-through current: 60.8 A / 57.7 A
Max. AC pass-through current: 76 A / 72.2 A
Max. AC pass-through current: 91.2 A / 86.6 A
Max. AC pass-through current: 121.6 A / 115.5 A
Max. AC pass-through current: 151.9 A / 144.3 A
Max. AC pass-through current: 189.9 A / 180.4 A
THDv (at linear load): < 2%
THDv (at linear load): < 2%
THDv (at linear load): < 2%
THDv (at linear load): < 2%
THDv (at linear load): < 3%
THDv (at linear load): < 3%
THDv (at linear load): < 3%

AC input (generator side)

Max. input power: 30 kW
Max. input power: 40 kW
Max. input power: 50 kW
Max. input power: 60 kW
Max. input power: 80 kW
Max. input power: 100 kW
Max. input power: 125 kW
Rated input current: 45.6 A / 43.3 A
Rated input current: 60.8 A / 57.7 A
Rated input current: 76 A / 72.2 A
Rated input current: 91.2 A / 86.6 A
Rated input current: 121.6 A / 115.5 A
Rated input current: 151.9 A / 144.3 A
Rated input current: 189.9 A / 180.4 A
Rated input voltage: 3/N/PE, 220 V / 380 V, 230 V / 400 V
Rated input frequency: 50 Hz / 60 Hz

Efficiency

Maximum efficiency: 97.7%
Maximum efficiency: 97.7%
Maximum efficiency: 97.7%
Maximum efficiency: 97.7%
Maximum efficiency: 97.5%
Maximum efficiency: 97.5%
Maximum efficiency: 97.5%
European efficiency: 97.3%
European efficiency: 97.3%
European efficiency: 97.3%
European efficiency: 97.3%
European efficiency: 96.9%
European efficiency: 97.1%
European efficiency: 97.2%
Max. battery charging efficiency from PV / AC: 98.5% / 97.8%
Max. battery charging efficiency from PV / AC: 98.5% / 97.8%
Max. battery charging efficiency from PV / AC: 98.5% / 97.8%
Max. battery charging efficiency from PV / AC: 98.5% / 97.8%
Max. battery charging efficiency from PV / AC: 98.2% /97.0%
Max. battery charging efficiency from PV / AC: 98.2% /97.0%
Max. battery charging efficiency from PV / AC: 98.2% /97.0%
Battery discharge efficiency: 97.5%
Battery discharge efficiency: 97.5%
Battery discharge efficiency: 97.5%
Battery discharge efficiency: 97.5%
Battery discharge efficiency: 97.0%
Battery discharge efficiency: 97.0%
Battery discharge efficiency: 97.0%

General data

Max. power per phase (grid and backup): 33% rated power
Dimensions (W × H × D): 530 × 880 × 290 mm
Dimensions (W × H × D): 530 × 880 × 290 mm
Dimensions (W × H × D): 530 × 880 × 290 mm
Dimensions (W × H × D): 530 × 880 × 290 mm
Dimensions (W × H × D): 1174 × 814 × 400 mm
Dimensions (W × H × D): 1174 × 814 × 400 mm
Dimensions (W × H × D): 1174 × 814 × 400 mm
Weight: 76 kg
Weight: 76 kg
Weight: 76 kg
Weight: 76 kg
Weight: 170 kg
Weight: 170 kg
Weight: 170 kg
Inverter topology: Transformerless
Self-consumption: < 35 W
Self-consumption: < 35 W
Self-consumption: < 35 W
Self-consumption: < 35 W
Self-consumption: < 45 W
Self-consumption: < 45 W
Self-consumption: < 45 W
Operating temperature range: -25 ~ +60°C
Relative humidity: 0 - 100%
Ingress protection (IP): IP66
Cooling method: Intelligent redundant fan cooling
Max. operating altitude: 4000 m
Max. operating altitude: 4000 m
Max. operating altitude: 4000 m
Max. operating altitude: 4000 m
Max. operating altitude: 3000 m
Max. operating altitude: 3000 m
Max. operating altitude: 3000 m

Grid connection standard

Safety / EMC standard: IEC/EN 62109-1/-2, IEC/EN 61000-6-2/-4, EN 55011

Documentation and certificates

Datasheet

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень.pdf

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User manual

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень_інструкція.pdf

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Certificate 1

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень_сертифікат.pdf

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Certificate 2

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень_сертифікат2.pdf

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Certificate 3

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень_сертифікат3.pdf

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Certificate 4

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень_сертифікат4.pdf

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Certificate 5

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень_сертифікат5.pdf

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Certificate 6

Система накопичення Solis FlexCore-ID 60–261 кВт·год · для приміщень_сертифікат6.pdf

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Frequently asked questions

Start from the site's average daily consumption and the peak load the inverter has to carry in off-grid mode. The power range of each modification and the recommended PV array size for it are listed in the product card under "Key specifications" — for a precise selection, contact a Solis dealer or use the form below.

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