Walnut Energy is an Australian developer of containerised battery storage solutions for medium to large-scale commercial and industrial premises – not to mention power plants and microgrids. Their battery storage products can be deployed in on-grid, edge-of-grid and off-grid applications to deliver a range of capabilities which include storing energy, providing black out protection, voltage and frequency regulation and more.. The company is closely partnered with Narada, one of the largest manufacturers of batteries in the world.
On the hardware side, Walnut Energy’s products can be sourced as both turn-key solutions (including inverters, management systems and monitoring functionality) as well as more modular ‘core modules’ (with inverters, management and switch gear to be provided by third parties). The company can be engaged as a simple hardware provider or as both the provider and long-time servicer of the products delivered.
Walnut Energy’s 10-foot ‘Core’ module with 330kWh of storage.
Battery technology
Walnut Energy’s storage solutions incorporate lead carbon and lithium-iron phosphate (LiFePO4) batteries from Narada, one of the largest battery manufacturers in the world. Depending on the application, demands and budget of a site/client, Walnut Energy is able to ‘balance’ the lead carbon/LiFePO4 battery ratio to deliver optimum value and performance.
| Lead carbon | LiFePO4 | |
| Power output | Lower | Higher |
| Tolerance to deep discharge | Lower | Higher |
| Cost | Lower | Higher |
| Cycle life | Similar | Similar |
| Performance at partial states of charge (PSOC) | Higher | Lower |
| Energy density | Lower | Higher |
Unit sizes
10-foot container
- 80-336kWh storage capacity
- Single/three-phase
- Up to 112kVA nominal power output
20-foot container
- 80-672kWh storage capacity
- Three phase
- Up to 500kVA nominal power output
40-foot container
- 400kWh-1.38MWh storage capacity
- Three phase
- Up to 1,000kVA
Applications
| On-grid | Edge of grid | Off-grid |
| Power support | Blackout protection | Perfect combination with renewable energy |
| Load shaving, time of use and demand side management | Automatic switching between grid and off-grid | Fully grid forming |
| Peak load supply management | Additional Power supply | Communication with generators and PV |
| Optimise your self-consumption | Voltage optimisation | Reduce your need for diesel |
| Blackout protection | Improved Power quality and stability |
Learn more: Contact Walnut Energy
Tom Kuiper, General Manager – info@walnutenergy.com.au
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