The Bill Was Higher Than the Price I Saw

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5 min

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The CPO publishes its tariff to the eMSP.

It has a time-of-day step: 0.35 per kWh before 17:00, and 0.55 per kWh after.

Why this matters

Time-of-day pricing is normal and completely valid OCPI. A tariff can carry several price elements that switch on the clock, the season, or how much power is drawn.

CPO

EMSP

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At 16:40 the driver plugs in.

The driver charges from 16:40 to 17:30.

The eMSP charges the driver 17.90, an effective rate near 0.50 per kWh.

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