More solar energy storage batteries
More products are coming to market all the time. Here’s our take on the best of the rest.
AlphaESS
Designed for both residential and commercial excellence, the AlphaESS battery systems allow you to store excess solar energy during the day to power your life through the night—or during unexpected grid outages. With its sleek, modular design, the system grows with your needs, while the integrated smart monitoring app gives you real-time insights into your consumption.
Key Features of the AlphaESS:
- Unlimited cycles warranted.
- Flexibility of either 4.8kWh or 9.6kWh storage modules (4.5kWh & 9kWh useable capacity).
- Established in 2012.
- UK support and EU stored data.
- Inverters have 200% Solar oversizing capability.
- Battery Bypass Technology, allowing the system to continue operating in the unlikely event of a module fault.
EcoFlow
Redefine your home’s energy resilience with the EcoFlow PowerOcean, a solar battery solution engineered for total autonomy. Built to provide a robust backup power of up to 10kW, this system ensures that even your most heavy-duty appliances—from air conditioners to electric ovens—run smoothly during a powercut.
Its sophisticated, stackable design isn’t just about aesthetics; it offers a flexible capacity that expands from 5kWh to 45kWh, allowing you to tailor your storage to your exact lifestyle.
Key Features of EcoFlow PowerOcean:
- Up to 20kWh of storage per inverter (stack)
- Market leading 15 year warranty
- Optional full home backup gateway compatability
- Each storage module has its own Battery Management System (BMS), allowing each module to operate independently
GoodWe
GoodWe ESA’s “all-in-one” approach tucks the inverter and the battery into a single, tidy cabinet, meaning no messy wires and a much faster install for our team.
It’s built for the real world. Whether you’re looking to soak up every drop of your solar generation or need a reliable backup when the grid goes wonky, the ESA delivers. It’s modular, too, so you can start with a sensible 5kWh setup and stack more units on as your family (or your EV) grows.
Key Features of the GoodWea ASA:
- Can mismatch 5.12kWh & 8.32kWh battery modules (5kWh & 8kWh useable capacity)
- Can utilise 200% inverter oversizing (100% to home, 100% to storage at same time)
- Established 2010
- AI & Forecasting via Smart Energy Management System (SEMS+)
SolarWatt
If you’re the type who appreciates a bit of German engineering (and let’s face it, who doesn’t?), the Solarwatt Battery Vision is going to be right up your street. Developed in a high-tech partnership with BMW, this system uses the same high-grade battery cell technology you’ll find in their electric cars.
It’s incredibly tough (IP65 rated for indoor or outdoor mounting), whisper-quiet, and features a smart “winter mode” that protects the cells when the British weather gets a bit grizzly.
Key Features of SolarWatt Battery Vision
- 10 year all-inclusive warranty, covering labour and product.
- 5th Generation of battery technology.
- BMW Collaboration storage solution (uses same cells as BMW Mini).
- Patented inverter cooling system to reduce heat build-up and maximise battery performance.
- Optimisation of self-consumption and solar grid trading compatible.
- Independent testing guarantees the highest level of safety.
Eleven Energy
While almost everyone else is stuck on lithium, Eleven has pivoted to Sodium-Ion (essentially using salt). Why do we love this at Naked Solar? Because sodium is abundant, easy to recycle, and doesn’t rely on the ethically “tricky” mining processes often associated with lithium and cobalt. It’s the greenest battery on the block, period.
Key Features of the Eleven Energy’s Galvani:
- UK support and cloud server
- Uses Sodium chemistry as opposed to mined Lithium
- 4.5kWh modules, up to 4x per stack (18kWh)
- Can set 16 different charge/discharge schedules
- Compatible with Home Assistant
