Your battery has been quietly charging up on solar through the day and running the house at night since the day it went in. It's brought the bill down, and there's been no reason to look any closer at what it's doing.
So is it earning you as much as it actually could?
The two things that decide your battery's return
A battery's savings come down to two separate factors: how it's set to operate, and the plan it's running on. Most owners have only ever dealt with the first one, because it's the setting the battery ships with. The second one, the plan, does more to determine your return than people realise.
What self-consumption mode actually does
Out of the box, most batteries run in self-consumption mode. Solar charges the battery during the day while the sun's out, and the home draws down that stored energy at night instead of buying from the grid. Charge by day, run the house by night, repeat.
What it can't do is respond to the market. The battery doesn't know what rates you're on. It has no way of knowing that wholesale prices are about to spike at 6pm, or that they're about to crash to nothing at midday. It just runs the same loop on repeat, charging and discharging on autopilot, regardless of what energy is actually worth at that moment.
Why the mode isn't the problem, the plan is
A battery on self-consumption mode isn't underperforming. It's doing its job. The limitation sits with the plan behind it, because that's what decides whether exporting stored energy is worth doing at all.
A traditional retailer buys energy on the wholesale market, adds a markup, and sells it back to you. That's the business. The retailer earns more when the gap between what it pays and what you pay is wider, which puts your interests and the retailer's interests in different directions from the day you sign up.
This is also where the loyalty tax comes in. Retailers reel new customers in with cheap honeymoon rates, then let those rates quietly lapse once the discount period ends. As Energy Consumers Australia's CEO, Dr Brendan French, has put it, keeping the low rate means having to switch between plans once or twice a year, and people have lives, so that's exhausting. The price creeps up while the battery keeps working just as hard for less in return.
Feed-in rates follow the same pattern. On a traditional plan, exporting stored energy back to the grid can earn as little as 4 cents per kilowatt hour. At that rate, leaving the battery to quietly self-consume rather than bothering to export is the rational choice. The plan simply doesn't offer anything worth trying for.
How a wholesale, subscription-based plan changes the maths
Amber doesn't make money the way a traditional retailer does. There's no markup added to your energy. You pay the wholesale price, the real-time price on the national market, passed straight through. Amber's only margin is a flat monthly subscription, so the margin stays the same whether prices are high or low. There's no gap between what Amber pays and what you pay, so there's no incentive for it to widen.
That changes what a battery can actually do on the plan. The price swings a self-consumption battery can't see become something worth acting on.
Automating around price swings with SmartShift
SmartShift is Amber's battery automation. It watches the wholesale market in real time and acts on your behalf, charging the battery when energy is cheap or free, holding that charge, and then selling stored energy you're not using back to the grid when prices peak. Instead of a few cents per kilowatt hour, exports through SmartShift can earn up to $19 per kilowatt hour during those peak moments, and you keep 100 per cent of that, not a fixed credit set by someone else.
You can set SmartShift and leave it running, or take control yourself if you'd rather manage the timing on your own terms.
Amber compared with a VPP
Keeping 100 per cent of your earnings is also what separates us from a virtual power plant. Hand your battery to a VPP and it gets controlled in the VPP's interest, with you paid a flat rate for the privilege. With Amber, the battery still works for you. You choose whether SmartShift handles it automatically or whether you take the controls yourself, and either way, the upside from what the battery earns is yours.
Quick answers
Does the type of battery affect how much you can save? The source material covers battery mode and plan type as the deciding factors, not brand or model, so that's what this article addresses.
Is self-consumption mode a bad setting? No. It reliably lowers your bill compared to having no battery. It just isn't built to respond to wholesale price movements.
What does SmartShift do differently? It watches the wholesale market in real time and charges or discharges the battery based on actual prices, rather than following a fixed daily pattern.
How is this different from joining a VPP? A VPP controls your battery in its own interest and pays a flat rate. With SmartShift, you decide how much control to hand over, and any earnings from what the battery sells go to you.
A battery in self-consumption mode is doing exactly what it was set up to do. What it earns beyond that comes down to the plan running behind it, not the hardware on the wall.
See what your battery could be earning on a plan built to act on it. Get a quote with Amber.
