FAQ

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Metrix » Rates
Q: When rates change in the middle of a given billing period, how does Metrix calculate dollar amounts?

A: 

When rates change in the middle of billing periods:

  1. Metrix determines the percentage of the billing period that falls into each rate (the prior and the post).
  2. That is, given:

     Bill Date   # Billing Days   Usage   Demand 
     12/14/95       
     1/18/96   35 days   100 kWh   10 kW 

    and given a New Rate Effective 1/1/96:

    Old Rate # Days = (1/1/96 - 12/14/95) = 17 days 48.6% of days in this bill go toward old rate
    New Rate # Days = (1/18/96 - 1/1/96) = 18 days 51.4% of days in this bill go toward new rate

  3. Metrix then applies the old and new rates to the entire bill.

    Old Rate $ = kWh * Old Rate $/kWh + kW * Old Rate $/kW + …
    New Rate $ = kWh * New Rate $/kWh + kW * New Rate $/kW + …

  4. Metrix then multiplies the dollar amount given by each rate times its respective fraction as calculated in step 1.

    Total $ = Old Rate $ * 48.6% + New Rate $ * 51.4%

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MetrixMarketManagerReportMakerOption C