Guides
Home battery guides.
In-depth, numbers-first guides to home battery storage in the UK. Every guide is written by the OffPeak Energy team and reflects mid-2026 pricing and tariffs.
Basics
What is battery storage? BESS explained for UK homeowners
9 min read
SizingWhat size battery do I need? A UK sizing guide
8 min read
CompareBest solar battery UK — an honest 2026 comparison
13 min read
CompareThe best home batteries in the UK, side by side
12 min read
GuideHome battery storage UK without solar
10 min read
CostsSolar battery cost UK — 2026 fitted price ranges
10 min read
FinanceBattery storage finance and £0-upfront options UK
10 min read
CombinedSolar panels with a battery — the combined system guide
11 min read
LifespanHow long do solar batteries last? Cycles, warranties, degradation
10 min read
PowerwallTesla Powerwall 3 UK price — what you'll actually pay fitted
9 min read