Here are some graphs for last few months, this year and last year.
March was great with SCE usage not even half of tier 1 and total from SCE of $18.77.
Average daily was 5.14, last March was 7.03 and before solar in Mar 2010 was 20.66.
There was only one month last year where we went into tier two. Before solar we were always in tier 2 and often tier 3. We hit tier 4 when we used only 190 kw for the month. SCE has since shrunk the tier 2 range and added tier 4 and tier 5!!! That is their way of getting a price increase without going through PUC.
SCE billing for tiers :
Tier 1 is $0.13, tier 2 is $0.16, tier 3 is $0.24, tier 4 is $0.28 and tier 5 is $0.31.
While we did not save as much as you we did save over $250 for the year.
Out average bill before solar was only $110 per month though. With the new tiers I know we would be higher.