The Three Go-To Systems for the Rebate
A practical guide to the three systems installers are quoting most right now
The rebate window has created a surge in activity — fast quotes, fast installs, and customers expecting clear answers immediately.
To help installers move confidently, we’ve pulled together a simple framework: the three pillars systems that stand-out.
These are the systems that perform strongly right now across simplicity, reliability and real-world suitability for rebate-eligible work.
Whispr-7 (PowerPlus)
The Compact All-In-One System
If you need a straightforward rebate-eligible system with minimal design complexity, Whispr-7 hits that mark.
Whispr-7 is a fully integrated BESS:
- 13.37 kWh storage
- 7 kW hybrid inverter
- All inside one enclosure
- CEC-listed and ready for residential installs
It’s ideal when:
- A customer wants backup capability without a large system design
- You need a clean, neat, all-in-one option
- Space, noise and installation time matters
Where it commonly applies:
- Entry-level to mid-size residential storage
- Hybrid solar + battery setups
- Homes wanting backup capability in a single integrated unit
Helios ESS (Discover)
The “Scalable & Robust Modular Battery”
Helios provides a modular, outdoor-rated battery system suited to a wide range of residential and light-commercial applications.
Each Helios module is a 16 kWh, IP65-rated, certified LiFePO₄ battery designed for durability and long-term performance.
Key characteristics:
- Modular building blocks that begin at 16 kWh and can be expanded as required
- Each battery features an intelligent internal BMS
- Supports backup, hybrid and small commercial applications
- Engineered for environments where consistent, reliable operation is important
Helios provides a flexible modular pathway. It allows installers to size storage appropriately, match site conditions, and configure systems that align with customer needs.
Common applications:
- Off-grid and hybrid residential systems
- Rural and remote properties
- Light commercial or agricultural sites
- Projects requiring outdoor-rated, scalable storage
Deye Modular ESS
Deye’s modular ESS provides a scalable battery solution suitable for residential and small-commercial storage requirements.
The Deye LV ESS range uses LiFePO₄ cells, with modular battery units that can be stacked as capacity needs grow. Many units are IP65-rated (model dependent), and the system includes a BMS designed to support safe, stable operation across typical residential and small-commercial environments.
Key characteristics:
- Modular battery units that allow capacity to be increased as required
- LiFePO₄ chemistry for stable, long-cycle performance
- IP65 outdoor rating for flexible on-site placement
- Suitable for both solar-hybrid and general energy-storage applications
Where Helios provides a rugged modular approach and Whispr offers an integrated all-in-one solution, Deye gives installers a scalable capacity-driven pathway. It supports a variety of system sizes and can be paired with appropriate inverters depending on the project.
Common applications:
- Larger residential storage systems
- Homes with higher load profiles (EV charging, pumps, workshops)
- Flexible capacity builds where system size may expand over time
- Small commercial or mixed-load storage projects
All proven systems you can quote with confidence right now.