Upload your electricity interval data

STEP 1

Sign in and open Run Bill

Use Sign in with IAMMETER in the page header, select a country and open Run Bill. Under Energy data source, choose Uploaded data.

STEP 2

Name the Dataset and confirm its timezone

Use a recognisable name such as “August electricity data”. Select the IANA timezone that applies at the connection, for example Australia/Sydney or Europe/London. BillSave checks CSV timestamp offsets against this timezone.

STEP 3

Upload BillSave interval CSV

The simplest format contains one interval per row:

start_at,end_at,import_kwh,export_kwh
2026-08-01T00:00:00+10:00,2026-08-01T00:30:00+10:00,0.420,0.080
2026-08-01T00:30:00+10:00,2026-08-01T01:00:00+10:00,0.390,0.060

• Timestamps must include Z or an explicit UTC offset.
• Every row must use the same real 5, 15 or 30-minute duration.
• kWh values must be finite and non-negative; use zero when export is measured and genuinely zero.
• Optional role columns include controlled_load_import_kwh.
• Do not fill missing intervals with invented values.

Download CSV template

STEP 4

Or upload Australian NEM12

BillSave accepts AEMO MDFF NEM12 v2.7 only in the Australian market. The file must be uncompressed UTF-8 text with valid 100, 200, 300, 400, 500 and 900 record ordering where those records apply.

Preview masks customer identifiers and lists the discovered kWh streams. For every stream choose:

• Grid import for electricity drawn from the network;
• Grid export for electricity sent to the network;
• Controlled Load import only for a separately billed controlled-load circuit;
• Ignore for a stream that must not enter the bill.

STEP 5

Review Preview coverage and quality

Check the detected format, timezone, interval resolution, first and last interval, number of intervals, energy totals, gaps, overlaps and quality. Estimated or substituted source intervals remain disclosed; missing dates are not silently changed to zero.

Real 5 or 15-minute source series are preserved and can be summed into the normal 30-minute billing series. A 30-minute source is never split into invented finer data.

STEP 6

Save the immutable Dataset revision

Select Save dataset after Preview passes. The private file, normalized intervals, stream mapping and content hashes are saved server-side under your user account. Re-uploading identical data can reuse the same revision; changing a NEM12 mapping creates a new revision rather than rewriting historical Runs.

STEP 7

Calculate, compare or find the best offer

Select the saved Dataset and a billing period contained within its coverage. The same immutable revision can be used for:

• Run Bill with one selected Offer;
• Compare Offers with the one to five Offers in the sidebar;
• Find Best across eligible published Offers.

Offer-specific customer parameters are saved against the Dataset and TariffVersion, so they can be restored after changing browser. An Offer that requires unavailable interval resolution or incomplete actual coverage is blocked or disclosed rather than estimated silently.