Feed it your year.
It reads the verdict.

Two files in, one verdict out — what a full year of your real usage would have cost on wholesale spot versus your fixed retail plan.

The two readings

Feed the panel two files

Your retailer bill sets the fixed plan's rates. Your meter data sets the usage. The panel models both on the very same 5-minute intervals.

Retailer bill

PDF Your most recent electricity bill — it carries your fixed plan's rates. Download it from your retailer's app or account portal. Drop a PDF or click to browse · required Drop a PDF file bill.pdf

NEM12 meter data

CSV Your interval (5-minute) usage export — import and export channels. Request it from your distributor's portal (e.g. SA Power Networks). Drop a CSV or click to browse · required Drop a CSV file nem12.csv

My meter has a controlled load (E2) channel

Controlled load rate on your current plan c/kWh inc GST Controlled load daily charge, if billed c/day inc GST

Only needed if your NEM12 file has an E2 channel — the run will ask if so. On the spot side, controlled load is priced at wholesale automatically.

Modelled on real AEMO wholesale + SA Power Networks network rates. Nothing to configure.

Processing

Reading…

Reading your meter data…Step 1 of 3

Energy readout

Spot vs Fixed · your meter data

On a full year of real meter data, this household would have paid less on spot.

saved in a year on spot vs fixed 0% lower

Imported—

Solar export—

Period—

Interval coverage—

The comparison

Two plans, one year of usage.

Every five-minute interval priced twice — against AEMO wholesale plus the SAPN network, and against your fixed retail contract.

Fixed — your retail plan

Annual total, inc GST

↓ cheaper

Spot — wholesale + network

Annual total, inc GST

Cumulative cost across the year

What the bill totalled, month by month, on each plan.

Spot Fixed

The gap between the lines is the difference between the plans.

Show the working

Where the difference comes from.

The full cost stack, both plans, inc GST. No rounding on this layer — these are the figures the model produced.

Component	Fixed (retail)	Spot (wholesale)	Difference

Reading the split: a fixed retail plan bundles energy, network, metering and pass-through costs into a single rate; spot itemises them. Spot pass-through rates are the ones itemised on real Amber SA bills; the loss-factor MLF (~1.0) and the export decomposition are the only estimates. A positive difference means spot was cheaper on that component.

View the full report Download report pack (ZIP)