power-compare/app/aer
dlawler489 e4c41c3eb9
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Fix missing GST on all AER-sourced usage rates and supply charges
AER's Consumer Data Right unitPrice fields are GST-exclusive, confirmed
by comparing a real, currently-effective EnergyAustralia contract's own
GST-inclusive rates against this plan's cached AER data: usage rates and
the supply charge all matched the cached value multiplied by exactly
1.1 (four independent figures). A real AGL bill confirmed the same
convention separately (excl-GST line items, GST added back as one
combined amount at the end). This understated every one of the ~700+
cached comparison plans' costs by ~10% relative to manually-entered
current plans (which were correctly GST-inclusive, taken from real
bills), biasing every "savings vs current" figure across the board.

Feed-in/solar buy-back rates are the exception -- confirmed GST-free in
that same contract's own terms -- so the multiplier applies only to
usage rates and the supply charge.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-11 15:06:39 +10:00
..
tests Fix missing GST on all AER-sourced usage rates and supply charges 2026-09-11 15:06:39 +10:00
__init__.py Initial commit: solar usage vs AER plan comparison app 2026-09-09 11:07:01 +10:00
cache.py Initial commit: solar usage vs AER plan comparison app 2026-09-09 11:07:01 +10:00
client.py Initial commit: solar usage vs AER plan comparison app 2026-09-09 11:07:01 +10:00