As the demand for renewable energy continues to grow across Lancashire, more homeowners are exploring solar battery storage as a way to get the most from their solar panels. Whether you’re generating your own energy already or planning a new solar PV system, pairing it with a battery can help reduce reliance on the grid and lower your electricity bills.
Two of the most popular solar battery brands are Tesla Powerwall and AlphaESS. Both are excellent products with proven reliability – but they offer slightly different features, designs and benefits.
Why Add a Solar Battery?
Solar batteries allow you to store excess electricity generated during the day so you can use it later, typically in the evenings or overnight when your panels aren’t producing energy. Therefore this reduces the need to import electricity from the grid, especially during peak hours when tariffs can be more expensive.
Batteries also offer backup in case of a power cut (depending on the setup) and allow you to benefit from schemes like the Smart Export Guarantee (SEG). In short, they’re a smart way to take greater control of your energy usage.
Tesla Powerwall 3
Tesla’s latest model, the Powerwall 3, is an all-in-one unit that combines the battery and inverter into a single enclosure. This makes it much quicker to install than the previous generation, which often required separate components.
Here are the key features of the Tesla Powerwall 3:
• Output: 11.05 kW continuous power – almost double that of the Powerwall 2
• Usable capacity: 13.5 kWh
• Design: Sleek all-in-one unit for neater installation
• Stackable: Suitable for large homes or commercial installs
• Smart features: App-controlled with live energy monitoring
• Warranty: 10 years
Also the Powerwall is fully integrated with Tesla’s energy ecosystem, which is ideal for those looking to add more Tesla products like EVs or solar roof tiles in the future. The product is also well supported in the UK, with a growing installer network, including Tesla Certified Installers like us at West Coast Electrical.
AlphaESS
The SMILE-G3 from AlphaESS offers a flexible hybrid battery solution, built to suit a wide range of installations. capable of handling both AC and DC coupling, which makes it an excellent option for new installations and retrofits alike. We often recommend this model for its modular design and high efficiency.
Key features of the AlphaESS SMILE-G3:
• Output: 3.6kW, 5kW or 8kW nominal output power
• Capacity range: Modular, from 4.0kWh to 38.4kWh
• Depth of discharge: 95%
• Battery chemistry: LFP (lithium iron phosphate) – known for safety and longevity
• Hybrid functionality: Built-in inverter for simpler integration
• Outdoor rating: IP65
• Warranty: 10 Years
AlphaESS also integrates well with solar panels and EV chargers, making it a good choice for homes aiming for a more complete renewable setup. Their modular approach is ideal for customers who want to start small and add more storage over time. Finally what sets AlphaESS apart is its strong focus on safety – the system includes instant pressure release valves to prevent thermal runaway, along with an automatic aerosol fire suppression system for enhanced protection. These features provide homeowners with greater peace of mind, knowing their battery system is built with advanced safety measures at its core.
For larger capacity needs, additional AlphaESS units can be installed as part of a modular system.
Key Differences: Tesla Powerwall vs AlphaESS
| Feature | Tesla Powerwall 3 | AlphaESS SMILE-G3 |
|---|---|---|
| Capacity (single unit) | 13.5 kWh | 4.0 – 38.4 kWh |
| Scalability | Up to 10 units | Modular expansion available |
| Backup power | Yes (with backup gateway) | Yes (depending on model) |
| Design | Sleek wall-mounted unit | Compact hybrid all-in-one unit |
| App & software | Tesla App | AlphaCloud + third party app |
| Integration | Best with Tesla ecosystem | Compatible with solar + EV systems |
| Outdoor rating | Yes – IP67 | Yes – IP65 |
| Warranty | 10 years | 10 years |
Specifications, warranties and product features are correct to the best of our knowledge at the time of writing. However, product details are subject to change by the manufacturer. Always refer to the official Tesla and AlphaESS documentation or speak to our team for the most up to date information.
Which One Should You Choose?
Both the Tesla Powerwall 3 and AlphaESS SMILE-G3 are high-performance systems, but the right choice depends on your specific energy usage, installation requirements and future plans.
You might prefer the Tesla Powerwall if:
• You want an all-in-one unit with high power output
• You’re already invested in Tesla’s ecosystem
• You have higher household demand or EV charging needs
You might prefer the AlphaESS SMILE-G3 if:
• You want a modular, flexible solution
• You need a hybrid inverter and battery system in one
• You’re looking for a great balance of performance and value
Solar Battery Storage in Lancashire
In summary we’ve installed hundreds of solar PV and battery systems across Lancashire, including areas like Blackpool, Lytham St Annes, Poulton-le-Fylde, Thornton-Cleveleys, and Preston. Whether you’re upgrading an existing system or starting fresh, we offer tailored advice and fully accredited installations.
As an MCS-certified, RECC-accredited, and TrustMark-approved installer, we’re committed to high standards and customer satisfaction. We also leave every property clean, tidy, and safe.
Ready to Take the Next Step?
If you’re considering a solar battery system for your home in Lancashire, we’re here to help with expert advice and a professional, tidy installation service.
