ChargeSync works for your home, not your supplier
Your battery and solar already save you money. ChargeSync works out the cheapest moment to charge, use, store or sell your energy, every half hour, automatically, so you keep more of those savings without lifting a finger. £10/month, 30 days free, pause anytime.
No new kit · No engineer · No supplier switch · 30 days free
The gap
Most batteries plod along on a basic schedule. But prices move every half hour, so the battery charges at the wrong moment, runs flat too early, or lets good solar go to waste.
The fix
ChargeSync runs your battery around tomorrow's prices, weather and your usage: charge when cheap, use stored power at peak, make solar work harder, and only export when you come out ahead.
What you get
Lower bills, automatically
Optimised every half hour around day-ahead prices, weather and your usage, hands-free. Half-hourly optimisation needs a time-of-use tariff to bite, anything from Economy 7 through to a fully half-hourly tariff like Octopus Agile; the finer your tariff's time pricing, the more ChargeSync saves.
No new kit, no engineer
Works with your existing battery, solar and tariff, 
, 
, 
and 
today, with more added. No supplier switch.
We show you the maths
30-day free trial, then £10/month. Your savings build day by day in the app, and each month we reconcile them against the fee, if they don't beat it, your subscription pauses. We never just keep billing you.
Faster payback
Makes your solar and battery work harder, shortening the payback time on your investment.
Lower carbon
Uses stored solar and charges when the grid is cleanest, cutting reliance on high-carbon peak power.
It still saves on a cloudy December Tuesday
The value isn't only sunshine. When there's barely any solar, ChargeSync still cuts your bill, filling the battery in the cheap pre-dawn hours and riding the expensive evening peak on it.
We subtract our own £10 first
Only what clears the £10/month counts as your saving. You can watch it build day by day in the app, and we reconcile and report it every month. If a month doesn't beat the fee, your subscription pauses while we re-tune. The number you see is real. Most companies rather hope you forget you're paying them; we email you the proof you should.
Your home runs on your own power first
ChargeSync feeds your home from solar and your own battery before it ever buys at peak prices, so the expensive grid stream shrinks, and the saving stays with you, not your supplier.
We work for your home, not your battery for someone else's profit
Most “free” battery schemes make their money from your battery. They sign it up to grid services, pocket the revenue, and hand you a small cut, all while the extra charging and discharging quietly wears out a battery that only has so many cycles in it. ChargeSync does the opposite. We put your home first: buy less from the grid, go easy on your battery, and keep the savings where they belong, with you.
| ChargeSync | Octopus Zero Bills · E.ON Next · Capture · Loop | |
|---|---|---|
| Works for | You, the homeowner | The supplier / grid-services operator |
| How you benefit | You save by needing the grid less | You’re paid a small cut of the revenue they earn |
| Your battery | Cycled only when it pays you, protected | Cycled hard for ancillary services, extra wear |
| Who keeps the upside | You do | They do |
See exactly what your system is up to, and what it's saving
Real-time insights
Live battery state of charge at 15-minute intervals, plus battery-efficiency and performance metrics.
Cost-savings tracking
See the value ChargeSync generates for you, day by day and month by month, in pounds.
Environmental impact
Track the carbon you avoid by using cleaner, cheaper power at the right moments.
Proactive alerts
Tailored notifications so you always know when there's an opportunity to save.
One app for everything
Coordinate solar, battery, and increasingly EV charging and heat pumps, in one place.
Optimised against smart tariffs
Watch ChargeSync work your battery against half-hourly tariffs like Octopus Agile.
Same kit, used progressively smarter
What a home could save each year on top of the solar and battery already fitted, as the same system is used more intelligently. Illustrative estimates for a 10 kWh battery, your figure depends on your home, tariff and usage.
Don’t be fooled: a battery maker may say a system is “optimised”, but a fixed timer can’t react to weather, prices or your demand, so the bigger savings don’t follow.
Illustrative figures for a typical 10 kWh solar-and-battery home on a flexible half-hourly tariff (around 10p off-peak, 24p by day, 40p at peak). What you actually save depends on your home, your tariff and how you use power.
Frequently asked questions
Do I need to buy new equipment?
, , and , and adding more all the time.Which batteries do you support?
, , and , and we're actively integrating others. ChargeSync is hardware-agnostic by design, so the list keeps growing. Don't see yours? Tell us and we'll let you know when it's ready.Do I have to switch supplier or tariff?
How does it lower my bill?
How much does it cost?
Lower your bill from the kit you already own
Your battery and solar already save you money. ChargeSync works out the cheapest moment to charge, use, store or sell your energy, every half hour, automatically, so you keep more of those savings without lifting a finger. £10/month, 30 days free, pause anytime.