Been auditing apartment complex accounts for 4 years and never seen this before. The utility''s position is that the rate change was communicated, but the tariff language doesn''t support that. Compared the interval data against the bill and found a 15% variance in peak demand.
Tricky seasonal rate misapplication situation at PPL Electric
Pro tip: ask for the billing determinant detail, not just the bill summary. The devil''s in the details with Memphis Light Gas & Water.
Don''t forget to check the Schedule B-19 effective dates — Ameren Missouri backdated a rate change that caught me off guard.