Sigenergy - Sigen HYA Hybrid Inverter 99.9kW (no backup) (SigenStack)
Scalable Sigenergy commercial inverter battery ready. Compatible with Sigenstack BAT 12.O (Sigenstor System)
Sigenergy – Sigen Hybrid Inverter 99.9kW
Reliable, Scalable, and Efficient Power Conversion for Commercial Solar Installations
Key Features:
99.9 kW Output – Ideal for large commercial solar systems.
Energy Storage Ready – Compatible with SigenStack BAT 12.0 (4–21 modules).
Highly Efficient – Up to 98.6% efficiency at 400V, 98.8% at 480V.
Scalable – Easily parallel units without a data logger.
Built-In Protections – AFCI, reverse polarity, surge protection, and anti-islanding.
Durable Design – Smart air cooling + IP66 protection rating.

Learn more about Sigenergy Surge capacity here and about Sigenergy gateways here.
Technical Specifications:
PV Input (DC):
- Max. PV Input Power: 199,800 Wp
 - Max. DC Input Voltage: 1,100 V
 - Nominal DC Input Voltage: 600V @380/400 Vac, 720V @480 Vac
 - Start-up Voltage: 180 V
 - MPPT Voltage Range: 160 – 1,000 V
 - MPPTs: 8
 - PV Strings per MPPT: 2
 - Max. Input Current per MPPT: 32 A
 - Max. Short-Circuit Current per MPPT: 50 A
 
Battery Input (DC):
- Battery Model: SigenStack BAT 12.0
 - Supported Modules: 4 – 21 units
 - Max. Charge Power: 99,900 W
 - Max. Discharge Power: 99,900 W
 - Max. Operating Current: 180 A
 
AC Output:
- Nominal Active Power: 99,900 W
 - Max. Apparent Power: 99,900 VA
 - Max. Output Power (cosΦ = 1): 99,900 W
 - Output Voltage: 400/480V, 3W+(N)+PE
 - Nominal Output Current:
 - 144.8 A @400Vac
 - 120.2 A @480Vac
 
- Max. Output Current:
 - 144.8 A @400Vac
 - 120.2 A @480Vac
 
- Frequency: 50 / 60 Hz
 - Power Factor: 0.8 leading ~ 0.8 lagging
 - THDi: < 3%
 
Efficiency:
- Max. Efficiency: 98.6% @400V, 98.8% @480V
 - European Efficiency: 98.4% @400V, 98.6% @480V
 
General:
- Dimensions: 918 × 640 × 340 mm
 - Weight: 78 kg
 - Nighttime Consumption: < 3.5 W
 - Operating Temp: -30°C to 60°C
 - Storage Temp: -40°C to 70°C
 - Max Altitude: 5,000 m (derating after 4,000 m)
 - Cooling: Smart air cooling
 - Ingress Protection: IP66
 - Communication: WLAN, Ethernet, RS485, Sigen CommMod (4G/3G/2G)
 - Connections: MC4 for PV (6 mm² max), OT/DT terminal for AC (240 mm² max)
 - Protections: As listed above
 
Learn more about Sigenergy.