At Blue Electrics, we install battery storage systems across South Wales and beyond — from single-phase domestic installs to large commercial systems. The battery is the single most expensive component in most renewable energy systems, so choosing the right manufacturer matters. Here are the brands we install and trust.
Batteries we recommend
Tesla Powerwall
The world's most popular home battery. Tesla Powerwall stores your solar energy for use in the evening, during outages, or when electricity prices peak. Intelligent, reliable, and built to last — with the best app in the business.
SigEnergy
All-in-one hybrid inverter with integrated modular battery storage from 5 kWh up to 48 kWh per stack. Smart AI-driven energy management, 0 ms backup switchover, and a tightly-integrated ecosystem.
EcoFlow
Modular energy storage systems with a focus on flexibility, portable backup power, and easy expansion. A strong choice for customers wanting to scale battery capacity over time without major rework.
Fogstar
UK-based LiFePO4 battery packs with an excellent price-to-capacity ratio and honest specifications. Popular with Sunsynk-based installs and customers who want serious usable capacity without the premium-ecosystem price tag — backed by proper UK support.
Battery-compatible inverters
If you're starting from scratch — or adding storage to an existing solar system — the inverter is as important as the battery itself. We install three hybrid inverter platforms that give you access to an even wider battery ecosystem:
- Sunsynk — supports the widest range of batteries in the industry (Pylontech, BYD, BSL, Dyness, Hubble, Fortress, and more). Market-leading flexibility and genuine off-grid capability.
- Solis RHI — proven UK reliability, strong warranty, and broad high-voltage battery compatibility including BYD and Pylontech Force series.
- SigEnergy — fully integrated platform with SigEnergy's own modular battery stacks.
How we help you choose
There's no universally "best" battery — it depends on your consumption profile, your roof, your tariff, and how you want the system to behave during a grid outage. We start every project with a free site survey and consumption analysis, then recommend the hardware combination that genuinely suits your home.
- Want seamless integration with solar and an EV charger? → Tesla Powerwall or SigEnergy
- Want maximum flexibility, off-grid resilience, or plans to expand later? → Sunsynk paired with Fogstar or your choice of battery
- Want a battery-only retrofit to an existing solar system? → See our battery retrofit guide
- Considering a standalone battery system without solar? → See our battery-only systems page
Ready to talk batteries?
Every quote starts with a free, no-obligation site survey. We'll measure your consumption, model your savings, and recommend the right-sized system — no oversold kit, no pressure.
Or call us on 0333 444 5553 for a quick chat.