Monthly Solar Production – April 2012

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Yes, my favorite day of the month is now the day I get my electric bill.  I was actually getting anxious over the last few days waiting for the bill to arrive.  But it came today and I was not disappointed.

My electric bill this month was -$7.34.  Yeah, baby!

The funny thing is that NStar’s bill is clearly not equipped to handle negative usage as they just have my usage as zero all over the place.  That little bar graph has no bar for this month at all.  They just added a Net Metering Credit for $13.77 at the end of the bill.  The only other charge is their flat $6.43 customer charge.

Here’s a chart showing my solar electricity production since inception:

Period Ending Production As % of Usage Savings
Dec 21, 2011 223 kWh 32.5% $45.05
Jan 24, 2012 288 kWh 34.5% $59.26
Feb 23, 2012 419 kWh 72.2% $86.81
Mar 23, 2012 484 kWh 87.7% $106.48
Apr 24, 2012 663 kWh 105.3% $145.86
Overall 2,077 kWh 63.3% $443.52

If there seems to be some inconsistency, it is due to monthly usage fluctuations, the number of days per billing period and NStar price changes.

What I find very interesting is that I have saved over $400 during the last 5 months, yet I expect my first quarterly SREC payment to be for over $500 in July. This is pretty cool.  :)

Gary

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