Just ran into an interesting situation with TVA in Boise. The demand ratchet is being applied at 80% instead of the tariff''s 70%. Compared the interval data against the bill and found TOU allocation doesn''t match meter timestamps.
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ComEd Rate IS misapplication — $47,500/month impact
Pro tip: ask for the billing determinant detail, not just the bill summary. The devil''s in the details with APS.
I disagree with the approach of going straight to the PUC. Try the utility''s escalation process first — it''s faster.
Be careful with Portland General Electric''s refund process — they sometimes try to limit the lookback period to 4 years.