Store what you generate, shift cheap off-peak power into peak hours, and see your energy flow more clearly — with sizing and install advice that fits how you actually live.
Store solar
Use yesterday’s sun tonight
Off-peak fill
Charge when rates dip (tariff permitting)
See savings
Track import, export, and battery flow
Backup
Where supported by kit & install
On a time-of-use or off-peak tariff, charging the battery when electricity is cheap and discharging when it’s expensive can sharpen payback — but tariffs change and aren’t guaranteed. We’ll help you understand the mechanics; you choose the supplier.
Your PV covers loads first; anything left can charge the battery instead of exporting immediately.
You keep energy on site for when you need it — instead of only selling it to the grid at export rates.
Discharge in the evening peak or overnight — depending on your settings and tariff.
Batteries shine when paired with panels: you store surplus generation and increase self-consumption. That’s usually where the maths looks best.
Some homeowners add a battery without PV and charge off-peak — viability depends on tariff spreads, standing charges, and cycle economics. We’ll be honest if the numbers are thin for your case.
Most domestic batteries today are lithium-ion (often LiFePO₄) — good efficiency, long cycle life, compact. Older lead-acid is cheaper upfront but heavier and shorter-lived — rare for new installs.
Couples tightly with new solar; very efficient for PV-to-battery. Less flexible for retrofits and grid-only charging.
Adds an inverter stage; often easier on existing solar, allows grid charging, and suits many retrofit jobs — sometimes at higher equipment cost.
Use your own electrons when you need them, not only when the sun is up.
Where your tariff allows, shift cheap power into expensive hours — we’ll sanity-check the logic for your usage.
Backup during outages needs the right hardware and install — we’ll say what’s possible for your property.
Practical answers for UK homes.