Monday, June 14, 2010

Photovoltaic rocks! Look ma! No power used!

I recently added 15 new photovolatic panels to my solar power array. My daily "net power" consumption has now dropped to zero. I produce "excess" power during the day which is sent back out to the Hawaiian Electric Company grid. They use the power elsewhere and give me credit for the power they consume. Then at night or on cloudy days, I use up the credit. My minimum bill is $18.26 which is the "connection fee."



At 1:21 PM, Blogger Andy said...

Nice!! I'm jealous; we don't have enough sunlight (and/or enough subsidies for green technology) to make it pay for itself here.

At 8:08 AM, Blogger Josh Maher said...

I'm sure the question you get all the time is how much did you spend on the system and when will you break even... Have you done the calculations?

At 6:56 PM, Blogger Jim McBee said...

The payback is about 7 years at today's price of electricity ($0.24 per kWH). The system life is estimated at 25 years.


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