Year summary: We used 7,356 kWh and generated 7,256 kWh for a net of -100 kWh for the year.
This is part of our quarterly home performance reporting. All data is posted at netplusdesign.com
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
We were performing fairly normally until Q4. Let’s break down the numbers.
Q3 2018 summary: 33% warmer, 1% more usage and 7% less sun as compared to Q3 2017.
This is part of our quarterly home performance reporting. All data is posted at netplusdesign.com
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 hddRead more...
![Hourly temperatures [2012-2018] visualization](/assets/img/2019/01/circle_02.2019120132036small.png)
![Hourly temperatures [2012-2018] visualization](/assets/img/2019/01/circle_03.2019120132036medium.jpeg)
