Up Hill House

  • New Look, New Location

    If you’re not a technical person, you can safely ignore this post. The only thing that you will notice is that when you go to uphillhouse.com, you are now directed to uphillhouse.netplusdesign.com. And the site looks a bit different, but otherwise no big changes.

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  • We're NOT net positive in 2019! What happened?

    Year summary: We used 8,062 kWh and generated 7,945 kWh for a net of -117 kWh for the year.

    Note: I’m 6 months behind in finishing this update. Back dating the post to January 4 when I statrted it.

    Last year we had relatively normal usage and rather low solar production. This year we have slightly less than normal solar, but higher usage. The end result is our second net overage in the lifetime of the house.

    Chart showing solar and usage values for last 8 years
    Chart showing solar and usage values for last 8 years

    We produced 5% less solar than average, and used 14% more than average. That tipped the scales once again, just enough to push us into the negative zone. On the long view however, we’ve still generated a surplus of 9,040 kWh over the last 8 years since the house was built.

    We were performing fairly normally until September. Let’s break down the numbers.

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  • First quarter 2019 performance

    Q1 2019 summary: 6% colder, 14% more usage and 16% more sun as compared to Q1 2018.

    We recorded a low of -11.8 on January 22, far from our lowest recorded temperature of -17.3°F on February 14, 2016. Our high was 69.5, lower than the 77.6°F last year. In 2012 we recorded a high of 82.4°F in the same period.

    Overall, here’s how this quarter compared to 2018.

    Q1 Comparison 2018-2019
    Q1 Comparison 2018-2019
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  • Visualizing temperatures

    It’s snowing and cold outside, so I thought I’d plot outdoor temperatures for the last 7 years.

    Hourly temperatures [2012-2018] visualization
    Hourly temperatures [2012-2018] visualization
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  • We're NOT net positive in 2018! What happened?

    Year summary: We used 7,356 kWh and generated 7,256 kWh for a net of -100 kWh for the year.

    2018 is the first year we have not generated a solar surplus. In short, we produced 15% less solar than average, and used 5% more than average. That tipped the scales just enough to break our 6 year net zero running streak. On the long view however, we’ve  generated a surplus of 9,157 kWh over the last 7 years since the house was built.

    Chart showing solar and usage values for last 7 years
    Chart showing solar and usage values for last 7 years

    We were performing fairly normally until Q4. Let’s break down the numbers.

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  • Third quarter 2018 performance

    Q3 2018 summary: 33% warmer, 1% more usage and 7% less sun as compared to Q3 2017.

    Nothing exciting to report, which is normal for 3rd quarters.

    At 7am on July 15th we became net positive for the year. As of the end of September, we have a surplus of 1,115 kWh heading into the final months of 2018. That’s about 211 less kWhs than last year at this time. Overall for the year, our solar production is down about 7%.

    Overall, here’s how this quarter compared to 2017.

    Chart showing usage, solar, net and hdd
    Chart showing usage, solar, net and hdd
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  • Porch maintenance

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  • 61,156 kilowatt hours

    61156kwh.JPG
    61156kwh.JPG
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  • Second quarter 2018 performance

    Q2 2018 summary: 18% colder, 2% less usage and 4% more sun as compared to Q2 2017.

    Overall, here’s how this quarter compared to 2017.

    Q2 Comparison 2017-2018
    Q2 Comparison 2017-2018
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  • First quarter 2018 performance

    Q1 2018 summary: 4% colder, 3% less usage and 13% less sun as compared to Q1 2017.

    I said it last year and I’ll say it again, it was a whacky winter. Lots of cold days, but also lots of warm days. It would be warm for a week or two, the ground would thaw, then we’d get snow.

    We recorded a low of -17.1 on January 7, close to our lowest recorded temperature of -17.3°F on February 14, 2016. Our high was 77.6, higher than the 73.6°F last year. In 2012 we recorded a high of 82.4°F in the same period.

    Overall, here’s how this quarter compared to 2017.

    Q1 Comparison 2017-2018
    Q1 Comparison 2017-2018
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