UK HOME BATTERY GUIDES
Home battery buying guides
Already have solar panels? Identify the exact battery configuration and the extra installed cost before estimating what solar energy it could shift to your home.
Tesla Powerwall 3: what determines payback in a UK home?
Untangle the integrated solar inverter, your existing inverter, backup hardware and the incremental cost of adding storage.Read the Tesla guide
Sigenergy SigenStor: how configuration and usage affect payback
Read the Energy Controller and battery-module line items separately; examine why capacity alone cannot establish annual savings.Read the SigenStor guide
AlphaESS SMILE-G3: what to check before estimating payback
Distinguish S5 and B5 inverter models, then weigh avoided electricity purchases against the export income forgone when solar is stored.Read the AlphaESS guide
Each guide uses manufacturer sources and a deliberately hypothetical sensitivity example, not a market-price list, product ranking or buying recommendation. The calculator evaluates your inputs for an existing solar system; it does not identify or simulate a product.