15 kwh a day * 345 * .05 = $250. Yeah I must have rounded a bit much. You can probably count on 20 days of travel a year hence 345 days.
5 cents - NC TOU-D off peak rate. 5.27 cents. 3% tax. 5% energy star house discount. Net 5.15 cents. No separate delivery charge. I do heat some in the peak but most months I have zero net peak usage from the solar PV. The peak rate is just 6.6 anyway. There is a peak demand charge but I can keep heating water off of that. I do that with a 1.2 kw heating element that shuts off from 6-9pm when I peak from running the a/c. In the winter I just heat the top half of the solar tank during off peak times.
The heat does enter the house reducing heating load in the winter. Adds to the cooling load also but we do wind up spending more on heating than cooling so there is an overall net benefit. I think that is where I got back to $200 but the benefit is not that great.
There is a small benefit to circulating the water on a sunny winter day and someday I'll probably add that in...
She does have a Droid. I do want to set things up in a negative fashion so that if the phone dies or GPS is shut off, the pump runs. I anticipate an order every 5 minutes to shut the pump off for 5 minutes when she is out of range.
5 cents - NC TOU-D off peak rate. 5.27 cents. 3% tax. 5% energy star house discount. Net 5.15 cents. No separate delivery charge. I do heat some in the peak but most months I have zero net peak usage from the solar PV. The peak rate is just 6.6 anyway. There is a peak demand charge but I can keep heating water off of that. I do that with a 1.2 kw heating element that shuts off from 6-9pm when I peak from running the a/c. In the winter I just heat the top half of the solar tank during off peak times.
The heat does enter the house reducing heating load in the winter. Adds to the cooling load also but we do wind up spending more on heating than cooling so there is an overall net benefit. I think that is where I got back to $200 but the benefit is not that great.
There is a small benefit to circulating the water on a sunny winter day and someday I'll probably add that in...
She does have a Droid. I do want to set things up in a negative fashion so that if the phone dies or GPS is shut off, the pump runs. I anticipate an order every 5 minutes to shut the pump off for 5 minutes when she is out of range.
The Lyrics are available in stock and run around $280.
