Calculate Your
Battery ROI
Upload your NEM12 meter data and see exactly how much you could save with a VPP battery system using historical wholesale prices.
How It Works
Upload Your Data
Request your NEM12 smart meter data from your electricity retailer. This file contains your energy usage in 30-minute intervals.
Choose Batteries
Select up to 3 battery models to compare side-by-side. See which one delivers the best ROI for your usage.
Compare Results
Get detailed ROI projections based on your actual usage patterns and real AEMO wholesale market prices.
What is a NEM12 file?
NEM12 is the standard format for smart meter data in Australia's National Electricity Market. It contains your electricity usage recorded every 30 minutes, showing exactly when and how much energy you import from or export to the grid.
- Log in to your electricity retailer's website or app
- Look for "Usage Data", "Meter Data", or "Download Data"
- Select "NEM12" or "Interval Data" format
- Choose at least 3-6 months of history for best results
Three strategies compared
Your current situation - buying from and selling to the grid at market rates with no storage.
Battery charges from solar and discharges to cover your own usage. Simple and effective for reducing grid dependence.
Smart grid trading - charges when wholesale prices are low (or negative!), discharges when prices spike. Maximizes revenue by playing the market.
What is a Virtual Power Plant?
A VPP connects thousands of home batteries into a coordinated network. When the grid needs power (during price spikes), your battery automatically exports. When there's excess supply (sometimes prices go negative!), it charges up cheaply.
Understanding wholesale prices
AEMO (Australian Energy Market Operator) sets wholesale electricity prices every 5 minutes based on supply and demand. These prices can swing wildly:
Our simulation uses real historical AEMO prices matched to your usage periods for accurate projections.
What the results show
Results are estimates based on historical data. Actual savings depend on future prices, your usage patterns, and battery performance over time.
Battery ROI Calculator
Upload NEM12 File
How to get your NEM12 file
- Log into your electricity retailer's website
- Navigate to "Usage" or "Meter Data"
- Look for "Download Interval Data" or "Export NEM12"
- Select your desired date range and download
Supported retailers: Amber Electric, Origin, AGL, EnergyAustralia, Red Energy
Select Batteries to Compare
Configure & Run
Select your state to use the correct wholesale prices.
Your Results Will Appear Here
Upload your NEM12 file, select batteries to compare, and run the simulation to see your estimated savings and ROI projections.