Due to a variety of circumstances, my wife and I decided to invest in solar panels for our home. I had always wondered if solar power would make sense in the Seattle area, given the dark and dreary winters. One day my wife saw that our city was holding a solarization campaign to try to get households to sign up for solar power packages. At the presentation, they made a compelling argument, and after doing a little financial analysis, we decided to have the solar panels installed.
Annual Status Updates
Note from the picture above that the house does have tree issues. That was the main concern I had. However, during the summer months the percent of shading drops off dramatically. Our installer, NW Electric and Solar, came out and did a site analysis, and quoted an expected first year output for my system at 3886 kilowatts. This takes into account the % of time the panels are shaded by trees (about 10-20% of the time). Given this production estimate, with some other assumptions, NW Electric and Solar estimated the payback period at 6 years. |
Current kilowatt production statistics are no longer available. For more information, please leave a comment. |
System Specifications16 Itek IT270 panels rated at 270 watts 8 Blue Frog APS500 micro-converters Installation Date: January 2015 Installer: NW Electric & Solar |
Solar Panel Price History:
2016 Sainty Solar 255 Watt 24 Volt Monocrystalline Photovoltaic Solar Panel Price per kilowatt
as of 4/15/16: $1.22 |
2017
Sainty Solar 255 Watt 24 Volt Monocrystalline Photovoltaic Solar Panel Price per kilowatt
as of 1/2/17: $1.00 |
2018 Price per kilowatt as of 1/6/18: $1.08 |
2019 Price per kilowatt as of 1/2/19: $0.80
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2020 Renology 2 piece 270 Watt panel Price per watt as of 1/2/20: $0.77 |
1/2/21 – Renology 2 piece 320 Watt panels – $1.03 watt |