Got a new shopping center client in Biloxi and found something concerning. Sales tax is being charged even though the client has a valid exemption certificate on file. Compared the interval data against the bill and found a 15% variance in peak demand.
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DTE Energy interval data format — help decoding
Nice find. I've started using interval data analysis software to cross-reference these calculations and it saves a ton of time.
Great catch, Nora V. I've seen Puget Sound Energy do this before — it's a systemic issue in their billing system.
Solid analysis. One thing I'd add is to verify the seasonal rates apply May-October against the original service application.