SigenStack System Overview and Configurations
This blog is a living resource and will continue to be updated as new information becomes available. Last updated: 12/11/2025.
Currently, no SigenStack configurations have CEC approval, but approvals are expected soon. Stock is ready to go once approved. We encourage pre-orders to reserve the units you need.
How the SigenStack System Works
The SigenStack system is a modular solar solution that allows you to combine inverters and batteries to match your installation needs.
- Sigen PV inverters connect directly to the solar panels to convert DC power into AC for immediate use or export to the grid. These are ideal for installations without battery storage.
- Sigen HYA hybrid inverters add the ability to integrate batteries. During the day, solar energy can power the property and charge batteries for later use. These systems do not provide blackout protection, but they allow users to maximise self-consumption of solar energy.
- Sigen HYB hybrid inverters with backup include blackout protection. This means that in the event of a grid outage, the system can continue supplying power to essential loads. When multiple inverters are used, a backup gateway ensures proper coordination for reliable backup.
- The SigenStack Battery - All SigenStack inverters support multiple sizes and can be paired with up to 12 × 12 kWh batteries, giving flexibility for residential and commercial setups. Minimum battery requirements and special configuration notes are included in our System Configurations & CEC Approval Table.
Inverter Models and Configurations
Sigen PV – Standard PV Inverter
- Battery compatible: No
- Sizes: 50 / 99.9 / 110 / 125 kW
- Notes: Inverter-only solution, no battery support.
- Pre-order stock: Sigen PV 50 kW, 99.9 kW, 110 kW, 125 kW
Sigen HYA – Hybrid Inverter (no blackout)
- Battery compatible: Yes, up to 21 × 12 kWh (~253 kWh)
- Minimum 4 batteries required
- Sizes: 50 / 99.9 / 110 / 125 kW
- Notes: Hybrid inverter, no blackout protection.
- Pre-order stock: Sigen HYA 50 kW, 99.9 kW, 110 kW, 125 kW
Sigen HYB – Hybrid Inverter with Backup
- Battery compatible: Yes, up to 21 × 12 kWh (~253 kWh)
- Minimum 4 batteries required
- Sizes: 50 / 99.9 / 110 kW
- Notes: Includes blackout protection. Gateway required if using more than 3 inverters.
- Pre-order stock: Sigen HYB 50 kW, 99.9 kW, 110 kW
The SigenStack Battery
- Capacity: 12 kWh per unit
- Modular: Combine multiple batteries to match your system size
- Compatible with HYA and HYB hybrid inverters
- Supports backup power when paired with HYB inverters
- Flexible for residential and commercial setups
- Pre-order recommended ahead of CEC approval. Buy now
System Configurations and CEC Status
| Inverter Model | Size (kW) | Battery Compatible | Max Batteries | Blackout Protection | Special Notes | CEC Approved? | Product Link |
|---|---|---|---|---|---|---|---|
SigenStack Battery | 12 | N/A | 12 kWh per module (scalable 48–253 kWh) | Yes (with HYB) | Scalable modular design; 1–4 stacks per inverter; Smart BMS; Supports off-grid/backup | Pending - Expected soon | |
| Sigen PV | 50 | No | N/A | No | Inverter only, no battery support | Pending | Sigen PV 50 kW |
| Sigen PV | 99.9 | No | N/A | No | Inverter only, no battery support | Pending | Sigen PV 99.9 kW |
| Sigen PV | 110 | No | N/A | No | Inverter only, no battery support | Pending | Sigen PV 110 kW |
| Sigen PV | 125 | No | N/A | No | Inverter only, no battery support | Pending | Sigen PV 125 kW |
| Sigen HYA | 50 | Yes | 21 × 12 kWh (~253 kWh) | No | Min 4 batteries, hybrid inverter, no blackout protection | Pending - Expected by end of Q4 2025 or early Q1 2026. | Sigen HYA 50 kW |
| Sigen HYA | 99.9 | Yes | 21 × 12 kWh (~253 kWh) | No | Min 4 batteries, hybrid inverter, no blackout protection | Pending - Expected by end of Q4 2025 or early Q1 2026. | Sigen HYA 99.9 kW |
| Sigen HYA | 110 | Yes | 21 × 12 kWh (~253 kWh) | No | Min 4 batteries, hybrid inverter, no blackout protection | Pending - Expected by end of Q4 2025 or early Q1 2026. | Sigen HYA 110 kW |
| Sigen HYA | 125 | Yes | 21 × 12 kWh (~253 kWh) | No | Min 4 batteries, hybrid inverter, no blackout protection | Pending - Expected by end of Q4 2025 or early Q1 2026. | Sigen HYA 125 kW |
| Sigen HYB | 50 | Yes | 21 × 12 kWh (~253 kWh) | Yes | Min 4 batteries, backup gateway required if >3 inverters | Pending - Expected around the first half of 2026 | Sigen HYB 50 kW |
| Sigen HYB | 99.9 | Yes | 21 × 12 kWh (~253 kWh) | Yes | Min 4 batteries, backup gateway required if >3 inverters | Pending - Expected around the first half of 2026 | Sigen HYB 99.9 kW |
| Sigen HYB | 110 | Yes | 21 × 12 kWh (~253 kWh) | Yes | Min 4 batteries, backup gateway required if >3 inverters | Pending - Expected around the first half of 2026 | Sigen HYB 110 kW |
Installer Notes
- Pre-orders are recommended to reserve stock.
- Bookmark this blog — we will update it as CEC approvals are confirmed.
- Contact your AC Solar Warehouse account manager for sizing advice, pre-orders, and installation support.
CEC approval... soon!
Andy Klink and Will Hall share the latest on SigenStack — system insights, updates, and custom gateway solutions.
With CEC approval expected soon, now’s the time to get your pre-orders in and prepare for upcoming commercial projects.
