Archive of posts from January 2013

  • 335 days and 6 slices of data

    Composite heatmap, generation, usage, ashp, dishwasher, hdd
    Composite heatmap, generation, usage, ashp, dishwasher, hdd
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  • Estimating heat energy for 2012

    April 7 Update: Using a different method I estimated  that we used 903 kWh for heat energy in 2012, that’s 16% of our total energy use. That would have cost us about $117 (using $0.13 per kWh).

    We don’t have a full 12 months of data for our heat, but using heating degree days (HDD) and performance thus far we can estimate that we used 591 kWh (+/-20%) for heat in 2012. That’s 11% of our total energy use for the year.

    Here’s the math…

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  • We're net positive for 2012!

    Pie chart showing circuit usage YTD
    Pie chart showing circuit usage YTD
    Bar chart showing circuit usage per month
    Bar chart showing circuit usage per month

    Year Summary

    We’re net positive for 2012! We used 5,601 kWh and generated 8,856 kWh for a net surplus of 3,256 kWh. We used an average of 15.3 kWh per day.

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