Wednesday, May 22, 2013

Questions? Yeah, I've got questions.

or Modeling Problems

My electric bill is a mystery.  I started looking into how the bill is actually calculated and found some interesting stuff.  

I don' think SCE appreciated the "social engineering" comment. 

So, I decided to turn this into a 3 Act lesson.  Except, their price doesn't fit my model that I modeled after their model.

What am I missing? 


David said...

Well, the bill is projected... so it's a forecast.

Doesn't the Californian pricing model have a chronological component? In other words, your prices depend on the time of day, and the total usage?

David Cox said...

My issue isn't with it being a forecast, it's the fact that the model I created didn't match the model they claim to use (at least my interpretation of it).

I did some more digging and found that the May/June bill will be different because the baseline allocation changes June 1.

There's no chronological component unless the customer specifically signs up for such a program. Basically, there's a baseline allocation of 11.1 kWh/day in the winter and 18.4 kWh/day in summer (June 1 - Oct 1). Tier 2 kicks in from 100-130% of baseline, Tier 3 is 131-200% of baseline and Tier 4 is >200%.

Most of this was unknown to me at the time I wrote the post.

There are a lot of moving parts to this pricing structure, but it's starting to make more sense.