Your own solar goes in first
Spare solar fills the battery before anything else. If the forecast says tomorrow’s sun will fill it, OptiGenTas won’t buy grid power to do the same job tonight.
Home battery optimiser · Built in Tasmania
Charge when it’s cheap. Sell when it pays.
OptiGenTas runs your home battery against the live electricity price, tomorrow’s solar forecast and the way your house actually uses power. It makes the call every few minutes, day and night, so your battery saves you as much as it can.
One day, planned hour by hour
An example weekday on a spot-price plan, with TasNetworks Tariff 93 peak times. Illustrative figures, not a real home. Tap or hover an hour to see the decision.
6 pm – 7 pm
Sell · peak
- Price
- 52.4 c/kWh
- Battery
- 87% → 64%
The price has spiked. The battery sells what the house won’t need before tomorrow’s sun refills it, and keeps enough for the rest of the peak.
- Hold
- Run the house
- Soak solar
- Paid to charge
- Sell
- Network peak
What it does
Four calls, made around the clock
Every decision weighs the price now against the price of the power that would replace it. Your battery’s charge goes where it’s worth the most.
It buys only when buying pays
It tops up from the grid when power is cheap, or when the price drops below zero and you’re paid to take it. It buys only as much as the next day needs.
Full for the peak, then it carries you
The battery goes into the evening peak full and runs your house through it, so you aren’t buying power at the dearest time of day.
It sells the surplus, never the need
When the price spikes, it sells what your house won’t use before the next cheap refill. It never sells power it would have to buy back at a higher price.
Rules it never breaks
Some things it won’t do, whatever the price
These are hard limits in the software. No forecast, price or plan can override them.
- NeverCharges from the grid during a network peak.
- NeverExports power while the price is below zero.
- NeverSells energy it would have to buy back dearer.
- NeverSells so much that the house runs short in the next peak.
- NeverPushes past your connection’s export limit.
How it decides
The same loop, every few minutes
Each home gets its own plan. Two houses with the same battery can need very different things.
Read
The live price, your battery’s charge, what your panels are making and what the house is using.
Forecast
Tomorrow’s sun from the weather forecast for your address, and your home’s usual load for each hour, learned from its own history.
Plan
The cheapest way through the hours ahead: when to hold, when to charge, when to run the house and when to sell.
Act
It sends the battery its instruction, then reads back what the battery actually did.
Watch
Every home is checked every five minutes. When something needs a person, we’re alerted.
On a spot-price plan the price changes every five minutes, so the plan does too. On a time-of-use tariff it plans around your peak and off-peak times.
What you get
You can see every decision
A live page for your home
The price now, your battery, your solar and today’s plan, with the reason behind each decision. It works on your phone.
Full before the weather turns
When the forecast shows strong winds, thunderstorms or a severe weather warning near you, it fills the battery early in case the power goes out.
Away from home, still working
While you’re away it sells what the empty house won’t need, then has the battery full for the day you get home.
What your battery saved
Every morning we work out what the battery saved compared with having no battery at all, and look into any day it didn’t.
Batteries and tariffs
Running in homes across Tasmania and south-east Queensland
Batteries we work with
- Tesla Powerwall
- FranklinWH
- Sigenergy
- Sungrow
- AlphaESS
- Qcells Q.HOME
- ESY Sunhome
Another brand? Ask us. We add a brand once its controls are proven on a real home.
Plans and tariffs
- Spot-price plans
- Follows the wholesale price every five minutes, charging when it’s cheap or negative and selling into spikes.
- Tariff 93
- TasNetworks time-of-use. Fills before the 7–10 am and 4–9 pm weekday peaks and runs the house through them. Peaks start an hour later in daylight saving.
- Tariff 97
- TasNetworks tariff for solar, battery and EV homes. Uses the midnight to 4 am super off-peak and keeps half-hour demand under the 8.5 kW line.
- Queensland
- Energex network tariffs in south-east Queensland.
Bill check
Send us a bill. We’ll show you what your battery could do.
Upload a recent electricity bill and tell us the size of your solar system and battery. We’ll work out how OptiGenTas would run your battery and what that could save you.
- Any recent bill works. A PDF from your retailer or a clear photo of every page.
- Sizes are on your paperwork. Solar in kW (for example 6.6), battery in kWh (for example 13.5 for a Powerwall).
- Your bill stays private. Only our team sees it, and we never share it.
Contact
Find out what it would do with your battery
Tell us your battery brand, your retailer and your tariff. We’ll show you how OptiGenTas would run it.