Energy
How I Got My Own Power Bill to Zero (And Then Some)
I'm going to show you an actual bill, not a projection.
My account with GloBird Energy currently sits at $256.60 in credit. Not a one-off sunny-month fluke — that's my balance as of the bill issued 1 July 2026, and it includes a full billing period through the back half of an Adelaide winter. Usage that period: 201.43 kWh drawn. Solar generated: 236.58 kWh. The bill itself for that month came to –$1.59 — GloBird owes me, not the other way around.
I've spent nine years telling other South Australian households how to get a zero — or better than zero — power bill. This is what it looks like when I do it myself.
The setup
9.5kW of solar, a 30kWh battery, installed October 2025. Nothing exotic. What actually does the work is the plan underneath it, how it's scheduled against the Adelaide grid, and three specific habits.
The three things that actually move the number
1. Free grid charging (11am–2pm, every day). My plan prices offpeak usage in this window at $0.00/kWh. If the battery ever needs a top-up from the grid rather than the sun, that's when it happens — never outside it.
2. The self-sufficiency reward (6–8pm, every day). GloBird pays a flat $1 a day for being fully self-sufficient — zero grid draw — during this peak window. It sounds small. Across a 28-day billing period, that's $24 — a full third of the bill's credit from one habit, done consistently.
3. Export stacking (same 6–8pm window). Once self-sufficiency for the day is locked in, anything extra the battery can export in that same slot earns a premium rate on top of normal feed-in. That was another $17.34 this period alone.
What the number doesn't show you
Here's the part I didn't expect to matter as much as it does: I don't think about power anymore.
I'm not watching the clock to avoid a peak-rate window out of anxiety. I'm not opening the app before I run a load of washing wondering what it's going to cost. I use power when I need it, comfortably, and the system handles the rest. That's not something you can put in a before-and-after bill screenshot, but it's the actual day-to-day difference — not "I saved some money," but "I stopped thinking about this."
I'm not going to tell you what the system cost, because I didn't pay retail for mine — nine years in this industry gets you access most people don't have, and quoting my number would be a bit misleading. What I can tell you is that the strategy — the free window, the self-sufficiency reward, the export stacking — has nothing to do with what you paid for the hardware. It's about whether anyone's actually set it up to work for you.
Why this matters if you're comparing quotes
Most solar and battery conversations stop at the sale. Nobody sits down afterwards and asks: given this exact system, on this exact plan, at these exact rates, what's the smartest way to actually run it? That's the gap between owning a battery and having a battery working this hard for you.
If you've already got a system and you're not sure it's doing what mine is, that's worth a look. If you're still deciding, it's worth knowing this outcome is the target, not the exception.
FAQ
Is this a typical result?
It reflects a specific system size, a specific plan, and consistent habits around two windows each day. Not everyone will land on exactly $256 in credit, but the mechanics — free charging windows, self-sufficiency rewards, export stacking — exist on more plans than people realise. Most people just aren't set up to use them.
Do I need a 30kWh battery to see something like this?
No — mine is on the large side for a residential system (most sit closer to 10–14kWh). A smaller battery won't net the same dollar figure, since there's less capacity left to export once the household's own evening load is covered. But the underlying strategy — charge for free when you can, stay self-sufficient during the reward window, export whatever's left — applies at any battery size. The number scales down; the approach doesn't change.
Why won't you say what the system cost?
Because I didn't pay retail for it — I've spent nine years in this industry, which gets me access most people don't have. Quoting my price wouldn't tell you anything useful about your own numbers, and I'd rather not put a figure out there that could mislead anyone comparing quotes.
Is GloBird Energy paying you to say this?
No. I don't take commissions from retailers or installers — this is just what's actually on my own bill, from my own plan.
Not sure if your system's actually working this hard for you?