Solar Projects in Vassalboro



In August of 2008 I installed 8, 215kw SunPower solar panels on the roof of my house.


Original 8 Panels

Along with the 8 solar panels I had an inverter installed to convert the DC voltage to AC.

SUNPOWER INVERTER

This was wired to by main electic panel in my house. If the amount of electricity being produced by my solar panels exceeded the amount of electricty that I was using, then the excess power would flow back onto the grid.

In April of 2008 I had an additional 8 210 Watt Sunpower panels added:

16 panel system

The cost for the first 8 solar panels and the inverter was $15,500. I also spent and additonal $242.93 to have an internal display unit installed that shows how much electricity is being produced. So the total cost for the initial 8 panels which was rated at 1.72 kw was $15,742.93. The system was up and running by August of 2007.

The cost for the additional 8 210 watt panels installed was $11,860. So the total cost to date has been $27,602.93. The out of pocket cost will be a bit less. Because of tax incentives I received a $2,000 Federal tax credit on my 2007 taxes for the first part of the installation. I should also receive a $2,000 Federal tax credit for my 2008 taxes. I also was fortunate in that I received a $2,000 Maine Photovoltaic Solar Rebate in 2008. This was unexpected. So I believe the total out of pocket cost for this system will be $21,602.93.

 

The table below shows my electric costs, and the amount of solar electricity that the system has been creating:

 

Date KW Hrs Used Electric bill Solar Electricity Generated      
Jan. 2007 430 $65.26        
Feb. 2007 407 $61.83        
Mar. 2007 395 $61.12        
April 2007 369 $58.15        
May 2007 364 $56.61        
June 2007 379 $58.89        
July 2007 300 $46.71   Start of panels    
August 2007 224 $35.15        
Sep. 2007 234 $36.67        
Oct. 2007 361 $55.92        
Nov. 2007 447 $68.95        
Dec. 2007 393 $60.77        
Jan 2008 428 $66.08        
Feb 2008 356 $48.04        
Mar 2008 180 $14.58 161 Trees cut this month/out of town for most of month.    
April 2008 122 $20.96 200 New panels added in middle of month    
May 2008 -3 $7.56 388      
June 2008 -27 $7.56 323      
July 2008            
             
             
             
             
             
             
             
             
             
             

 

 

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