Daytona Beach hotel client. Downloaded 12 months of Duke Energy 15-min interval data from their online portal. When I calculate monthly kWh totals, I'm getting numbers 3-5% higher than what appears on their actual bills. Anyone seen this before?
Duke Energy FL smart meter interval data vs utility bill discrepancies
Duke uses loss factors and transformer adjustments that don't show up in raw interval data. Check if customer is billed at transmission voltage but metered at service voltage. Multiplier could be 1.03-1.05.
Also check for demand-side management credits. Some Duke FL customers get kWh credits for participating in load control programs. Credits appear on bill but not in interval usage data.
Found the issue! Customer has 1.04 meter multiplier for transformer losses that wasn't applied to raw interval data. Duke customer service confirmed the multiplier applies to all usage calculations.
Always verify meter multipliers and loss factors when reconciling interval data to billed usage. Raw interval readings often need adjustment for transformer ratios, line losses, and other utility calculation factors.