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Grid-Tied System Testimonial

Grid-Tied System Testimonial

Wednesday, January 11, 2023

It was five years ago today that you tied my system to the grid.


It was five years ago today that you tied my system to the grid. I’m taking this opportunity to share some statistics on a “real world” system with you. Feel free to share this information with prospective customers. 

My system has twenty 195 watt panels for a total capacity of 3,900 watts (although I’ve seen it putting out as much as 4,150). My roof angle is 23 degrees which is a little off optimum for a grid-tied system and the roof is a few degrees off of true south. Still, the installation is close to optimum. Even though there’s quite a bit of snow here at an elevation of 7,800 feet, I’ve only removed snow from the panels once--I just let the sun melt it. The one time I removed it was in January 2013 when the panels had been snow covered for a month. 

I didn’t have you install my system for financial reasons, but because it was the “right thing to do.” Still, in my opinion, it’s been a good financial investment. In the five years that the system has been in operation it’s put 28,598 kWH into the power grid. At the current cost from SMPA of $0.13755 per kWH, that amounts to $3,934 worth of power. My system cost $30,000, but with rebates and tax credits it actually cost me $15,000. That’s an annual return on my investment of 5-1/4 percent. That return on investment is pretty hard to come by these days. 

Thanks for doing your part to keep carbon dioxide out of our air. 


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