Your battery.
Working smarter.
Your home battery, earning its keep. GridSentinel works your live Amber prices, charging when it's cheap and selling when it's worth it, all on its own. You choose how hands-on to be.

Set it up once. It does the rest.
Connect your battery and your Amber account, and GridSentinel takes over the watching and the deciding, every few minutes, day and night. And it shows you every decision in plain English, so you always know what it did and why.
Connect once
Link your battery and your Amber account. No new hardware, no electricians.
Choose your automation
Pick your flavour of automation: fully hands-off with GridSentinel's Forecast Optimiser, your own Smart Rules, or simple price-based thresholds with Basic Rules.
Always on
Round the clock, GridSentinel reads your live prices and steps in only when the numbers genuinely pay.
See every decision
Each decision is shown to you in plain English, so you're never guessing why GridSentinel did what it did.

Four simple moves.
However you set it up, every decision comes down to one of four things your battery can do, and the app always tells you which one, and why.
When it's worth selling
It sends stored energy back to the grid when selling beats holding onto it, turning a full battery into money instead of letting it sit.
When it's worth charging
It charges from the grid while power is cheap, and tops up ahead of time when it sees your solar won't fill the battery enough to protect you from elevated grid prices.
When export goes negative
If the grid would charge you to export, it holds your solar back instead of paying to push it out. Available on DC-coupled systems.
When there's nothing to trade
Powers your home normally from your own solar and battery, until the prices are worth acting on again.
Choose how much you hand over.
From fully automatic to completely manual, pick the level that suits you, and change it any time. Whatever you choose, the safety limits stay on.
Forecast Optimiser
RecommendedThe smart default. It weighs price forecasts, the weather, your solar and your battery, then makes the best call at every step, and learns your home's energy habits over time. Set how assertive it is: Battery Saver, Balanced or Maximiser.
Smart Rules
Your own rules in plain language, like "when the export price is high and the battery's over half full, sell." Stack as many as you like, start from a template, and preview a rule before it goes live.
Basic Rules
Just the essentials. Set a price to sell above, optionally a price to buy below, and a reserve you never drop past. Nothing else to think about.
Standby
The pause button. GridSentinel stops acting and your battery runs as it normally would, ready to start again whenever you are.
Want to see it work first? In Observe only, GridSentinel makes every call and writes it down for you to check, but never sends a thing to your battery. Hand over control once it's earned your trust.

See exactly what it's doing.
What your battery is up to right now, what it's earned and saved, and what the grid still cost you, all in one place, all in plain words.
The real numbers, not a guess.
GridSentinel adds up what you didn't have to buy, what you earned by selling, and what the grid still cost you, for the day, the week or the month. Real figures from your own home.
- A clear breakdown of money saved on power you avoided buying, and money earned selling it back.
- Your energy at a glance, how much solar you made, what your home used, and how much you powered yourself.
- No spreadsheets, the figures are worked out for you and there whenever you want them.

Nothing happens in the dark.
Every move GridSentinel makes is written down in plain words, with the prices and battery level that led to it.
- Plain-English reasons for every decision.
- The prices behind it and your battery level at the moment each choice was made.
- Filter by what happened, buying, selling, holding or running normally.

Where your power actually goes.
See how much your solar made, what your home used, what came from and went back to the grid, and how much of it you powered yourself, for the day, week or month.
- Solar made vs. home used, side by side, so the picture is obvious at a glance.
- Bought vs. sold, with how much of your power came from you, not the grid.
- A simple savings chart showing your better and quieter days.

Works with the battery you've already got.
Connect once with your existing credentials. GridSentinel talks to your battery directly. No extra hardware, no installer visit.

Powerwall 2 and 3
Supported at launch
SigenStor systems
Supported at launch
FoxESS home batteries
Supported at launchCurtail requires a DC-coupled system. Stopping your solar from exporting when prices turn negative is only possible on DC-coupled installations. This applies across all three brands; every other feature works regardless of how your system is wired.
DC-coupled solar runs through the same inverter as your battery, so GridSentinel can curtail it; AC-coupled solar has its own inverter, outside that control. Your installer can confirm which you have.
More brands are coming soon. Don't see yours? Tell us what you run, and we'll prioritise the ones people ask for most.
It's your battery. You hold the keys.
You're trusting GridSentinel with an expensive piece of kit, so the safety limits are always on, and they're the one thing it can't override.
A reserve you set
GridSentinel never drops your battery below the reserve you choose. Your backup power stays yours, even through the biggest price spike.
Never pays to export
If the export price ever goes below zero, it holds your solar back so you're never charged to give energy away. Available on DC-coupled systems.
You're always in control
Pause GridSentinel or disconnect your battery any time, in one tap. It goes straight back to normal, nothing is changed for good.
It stops if unsure
If something doesn't look right, GridSentinel pauses itself and your battery falls back to normal, and lets you know.
One simple price.
No cut of your savings, no fee for every export. Just one flat subscription, and everything GridSentinel earns you stays yours.
- Full automation, Forecast Optimiser, Smart Rules or Basic Rules, your call.
- Buying, selling, holding and self-powering your home, handled around the clock.
- Insights and history so you can always see what it earned and saved, and why.
- Works with your battery, Tesla Powerwall, Sigenergy and FoxESS.
- Safety limits built in, your reserve, the negative-price stop and instant override.
- Cancel anytime, no lock-in, no exit fees.
30 days free, then billed at your launch price · Cancel anytime · We never take a cut of what you earn