Battery Storage Guides
Every battery storage guide from the SMS engineering team — practical, factual, and from the people who fit the systems.
Adding a Battery to Existing Solar with the Warm Homes Loan Scheme
The Warm Homes Loan Scheme can pay for a battery added to the solar you already have, up to £15,000. What it covers, what it does not, and the order to do things in.
Tesla Powerwall 3 Multi-Stack Installs — When Two or Three Batteries Make Sense in 2026
A practical look at multi-Powerwall installs across Cheshire and Trafford — when stacking two or three Powerwall 3 units pays off, when it doesn't, and how to size the system for your tariff.
Tesla Powerwall 3 vs EcoFlow PowerOcean: Which Battery in 2026?
A 2,000-word breakdown of the two leading home batteries on the UK market — capacity, warranty, ecosystem, and the real-world install differences.
Should I Add a Battery to My Existing Solar System?
When does battery retrofit make financial sense — and when doesn't it? A practical guide to the decision.
Where to go next
- Doing both at once? solar and battery installation.
- For a modular battery that expands in 5kWh steps, EcoFlow PowerOcean.
- For whole-home backup, Powerwall 3.
- For barn, shed and packhouse roofs, solar for farms and agricultural buildings.
Is your system worth upgrading? Find out free.
Tell us your postcode and what you have. A real engineer reviews it and comes back within one working day with an honest answer — including when the answer is "leave it alone".