The Solis S6-EH1P8K-L-PLUS is an 8kW single-phase low voltage hybrid inverter from the S6 Plus energy storage range, built for larger residential solar-plus-storage systems. With a recommended max. PV array size of 16kW, 40-60V battery voltage range, and a dedicated generator input, it supports AI-driven charge/discharge scheduling based on time-of-use tariffs, making it well suited to higher-consumption homes running a substantial battery bank.
190A
Max. Charge/Discharge Current
Installer note — grid compliance: This series is certified to G98 under the manufacturer's listed grid connection standards. Confirm current DNO notification requirements (G98 or G99) based on total installed export capacity, and ensure installation is carried out by an MCS-accredited installer with correct battery/BMS protocol configuration before commissioning.
Switching time differs from smaller S6 Plus models: The manufacturer's datasheet for this 8-10K platform specifies a backup switchover time of under 10ms, slower than the under 4ms figure quoted for the smaller S6-EH1P(3-8)K-L-PLUS series that shares a similar naming convention. Confirm the correct figure against the model-specific datasheet if switchover speed is a specification driver for the installation.
Battery compatibility: Compatible with mainstream 40-60V lithium and lead-acid battery brands. Always confirm compatibility against the current Solis approved battery list before specifying a system, particularly for larger battery banks paired with this inverter's 190A charge/discharge current.
High-Capacity PV Input
Supporting a PV array up to 16kW — 160% of rated AC output — the dual MPPT design lets larger roof arrays be connected without oversizing the inverter, improving yield capture during low-light and shoulder-season conditions.
AI-Driven Time-of-Use Management
Built-in AI logic automatically schedules battery charging and discharging around time-of-use tariff windows, shifting consumption to cheaper periods without manual scheduling and improving the economics of a larger battery installation.
Dedicated Generator Input
A dedicated generator input rated at 8kW allows a backup generator to recharge the battery and support loads directly during extended outages, independent of the PV and grid connections.
VPP and EMS Integration
Native compatibility with Virtual Power Plant and Energy Management System platforms allows the inverter to participate in grid balancing services and third-party energy optimisation schemes as these become available.
200% Surge Capability
The inverter sustains 200% of rated power for 10 seconds, providing the inrush current needed to start motor-driven loads such as pumps and air conditioning compressors from backup power.
Industrial-Grade Display
A 7-inch display using US-made ZEITLER industrial-grade components pairs with Bluetooth app setup, giving installers a fast commissioning process and clear on-site diagnostics.
Input DC (PV Side)
| Recommended max. PV array size |
16 kW |
| Max. usable PV input power |
12.8 kW |
| Max. input voltage |
500 V |
| Rated voltage |
330 V |
| Start-up voltage |
90 V |
| MPPT voltage range |
90-435 V |
| Max. input current |
32 A / 32 A |
| Max. short circuit current |
40 A / 40 A |
| MPPT number / max. input strings number |
2 / 4 |
Battery
| Battery type |
Li-ion / Lead-acid |
| Battery voltage range |
40-60 V |
| Max. charge / discharge power |
8 kW |
| Max. charge / discharge current |
190 A |
| Communication |
CAN / RS485 |
Output AC (Grid Side)
| Rated output power |
8 kW |
| Max. apparent output power |
8 kVA |
| Operation phase |
L/N/PE |
| Rated grid voltage |
220 V / 230 V |
| Rated grid frequency |
50 Hz / 60 Hz |
| Rated / max. output current |
36.4 A / 34.8 A |
| Power factor |
>0.99 (0.8 leading – 0.8 lagging) |
| THDi |
<3% |
Input AC (Grid Side)
| Input voltage range |
187-253 V |
| Max. input current |
50 A |
| Frequency range |
45-55 Hz / 55-65 Hz |
Output AC (Backup)
| Rated output power |
8 kW |
| Max. apparent output power |
2x rated power, 10 s |
| Back-up switch time |
<10 ms |
| Rated output voltage |
L/N/PE, 220 V / 230 V |
| Rated frequency |
50 Hz / 60 Hz |
| Rated output current |
36.4 A / 34.8 A |
| Max. AC passthrough current |
50 A |
| THDv (@linear load) |
<2% |
Input Generator
| Max. input power |
8 kW |
| Max. input current |
36.4 A / 34.8 A |
| Rated input frequency |
50 Hz / 60 Hz |
Efficiency
| Max. efficiency |
96.2% |
| EU efficiency |
96.1% |
| Battery charged by PV/AC max. efficiency |
95.3% / 93.9% |
| Battery discharged to AC max. efficiency |
93.8% |
Protection
| Anti-islanding protection |
Yes |
| Ground fault monitoring |
Yes |
| DC reverse-polarity protection |
Yes |
| Integrated AFCI 2.0 |
Optional |
| Protection class / overvoltage category |
I / II (PV and BAT), III (Mains, Backup and Gen) |
General Data
| Dimensions (W x H x D) |
335 x 560 x 253 mm |
| Weight |
23.5 kg |
| Topology |
High frequency isolation (for battery) |
| Operating ambient temperature range |
-40°C to +60°C |
| Ingress protection |
IP66 |
| Noise emission (typical) |
<65 dB(A) |
| Cooling concept |
Intelligent fan-cooling |
| Max. operation altitude |
3000 m |
Connections & Compliance
| DC connection |
MC4 plug (PV port) / Terminal block (BAT port) |
| AC connection |
Terminal block |
| Display |
7.0" LCD display + Bluetooth + App |
| Communication |
RS485, CAN; optional Wi-Fi, GPRS, LAN |
| Safety / EMC standard |
IEC/EN 62109-1/-2, EN 61000-6-2/-3 |
| Grid connection standard |
NRS 097-2-1, IEC 62116, IEC 61727, IEC 60068, IEC 61683, EN 50530, MEA, PEA, NBR 16149, NBR 16150, G98, CEI 0-21 |
Frequently Asked Questions
What size PV array can be connected to this inverter?
The inverter supports a recommended maximum PV array size of 16kW — 160% of its rated 8kW AC output — across two MPPT inputs, allowing high-power modern panels without derating.
How fast is the backup power switchover?
The manufacturer's datasheet for this model specifies a switchover time of under 10ms. This is slightly slower than the smaller S6 Plus models (which are rated under 4ms), so it's worth checking this figure if a customer's load is highly sensitive to interruption.
Can this inverter be used with a backup generator?
Yes. It includes a dedicated generator input rated at 8kW, allowing a generator to recharge the battery and support loads independently during extended grid outages.
Which batteries are compatible with this inverter?
The inverter operates within a 40-60V battery voltage range and is compatible with mainstream lithium and lead-acid battery brands. Always confirm compatibility against the current Solis approved battery list before specifying a system.
Does this inverter support UK grid connection standards?
Yes, it is certified to G98 under the manufacturer's listed grid connection standards. Installers should confirm current DNO notification requirements based on total system export capacity before commissioning.
