http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/ Engadget Comments for Solar-powered 'guiltless green' home theater system makes your Wall-E Blu-ray very happy http://www.engadget.com/media/feedlogo.gif http://www.engadget.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
it seems like a pretty great way to save power, but i'm guessing it's pretty expensive...]]>Apr 18th 2009 11:46AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 11:55AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
stupid nano solar needs to go public with their $1/watt...]]>Apr 18th 2009 11:58AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
would that even be a good estimate if these panels were hooked up to your whole house?]]>Apr 18th 2009 12:11PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:14PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
You can buy the panels he's installed (the Sharp 175) for $757 each.

http://www.altersystems.com/catalog/sharp-175-watt-solar-panel-p-46.html]]>Apr 18th 2009 10:47PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
Avg hours insolation (kW per m2 per day): 6.58
cost per kWh (SRP): $0.11
SRP Rebate per system watt: $3.00
Federal tax credit: 30.00%
State tax credit (up to $1000): 25.00%
Average monthly usage (kWh): 2,000

7.9 kW system cost : $40,000
cost per watt (gross): $5.06

SRP Rebate: $23,700.00
Fed tax credit: $7,110.00
State tax credit: $1,000
Total rebates and credits: $31,810.00

Net system cost: $8,190.00
Net cost per watt: $1.04

Average generated solar kWh per year: 18,976
Current average kWh hour consumption per year: 24,000

Current SRP year: $2,544.00
Solar savings year: $2,011.40
SRP AFTER Solar: $532.60

Savings percentage: 79.06%

Payback calculations
Net system cost: $8,190.00
Annual savings: $2,011.40
Payback years : 4 ]]>Apr 18th 2009 10:48PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
So if you take that out a little further, what will your net profit be on the array, say at 10 years from install and at 25 years (the average warranty period for panels), taking into account your state's historical annual electrical rate increase?

My very quick and dirty estimate has it at about $13,000 at year 10 and $45,000 at year 25.

Sounds like you'd have to be a fool not to have a grid-tie solar array in Phoenix. My 10kw array, with 25kw battery, in Seattle has a hard payback of right around 13 years. Although considering the reduction in company down time (due to that battery backup) it's already more than paid for itself. Been working great for the past 2 years.]]>Apr 19th 2009 12:26AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
extended figures:
savings after 5 years 10,057.02
savings after 10 years 20,114.04
savings after 15 years 30,171.06
savings after 20 years 40,228.08

If electricity goes to .15 kWh:

The payback is 3 years and
savings after 5 years 14,231.63
savings after 10 years 28,463.26
savings after 15 years 42,694.90
savings after 20 years 56,926.53
]]>Apr 19th 2009 1:25AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 19th 2009 2:00AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 19th 2009 10:05AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 19th 2009 1:39PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
watts is already a time derivative... ]]>Apr 18th 2009 11:54AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:05PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
Watts per hour (W/h) doesn't make sense - if a device is constantly dissipating 1W, how much power is it dissipating per hour? There's no answer to that - the only way to measure it is by saying it is dissipating 1W for an hour, which would be 1 watt hour (Wh). If you look outside on your power meter it will probably say kVAh (kilo volt-amp hours) which is almost the same as KWh (kilo watt hours... actually some meters may even say kWh).]]>Apr 18th 2009 1:40PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 19th 2009 7:56PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://en.wikipedia.org/wiki/Watt-hour)

Most peoples electric bills are in kWh, and the average house uses several hundred kWh a month. I average about 1,600 kWh per month. Where I live a 700 watt system would cost about $6,000 before rebates (http://shop.solardirect.com). A kWh hour cost me $.1084, so if these produce 80kWh per month as quoted, they would save me $8.67 a month, or $104 a year and would take approximately 57 years to pay back.]]>Apr 18th 2009 9:06PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 9:41PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
According to Glikes, the solar array cost $5,800, including installation. 30% of that will be paid back by a federal tax credit (-$1740), another 35% from a state tax credit (-$2030), bringing it's total cost to $2,030. He will also earn incentives from the utility, which bring the payback time to 3 years. Not exactly the 57 years you claim.

http://www.electronichouse.com/article/solar_panels_power_home_theater/C201
]]>Apr 18th 2009 10:44PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
]]>Apr 19th 2009 12:16AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Good job!]]>Apr 18th 2009 11:55AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:47PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:48PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 3:31PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 3:39PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 9:48PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://begthequestion.info/]]>Apr 19th 2009 1:18AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:00PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:16PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:29PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 1:28PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:29PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:34PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
http://en.wikipedia.org/wiki/Ampere]]>Apr 18th 2009 12:36PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:54PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
Life would be so much easier if we used Joules to figure out how much electricity we need to pay for.

http://en.wikipedia.org/wiki/Watt#Confusion_of_watts_and_watt-hours]]>Apr 18th 2009 1:49PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 2:24PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 7:22PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:34PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
"I tell ya what. I'll set our alarms for 6:47 am and we'll watch it then!"]]>Apr 18th 2009 1:06PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 19th 2009 9:37AMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/my guess that they can pay back in 4 years is that i believe they said the solar only powers that theater room. so they only watch a movie a day, the rest of the energy they'd sell back...
now if they were trying to power their whole home, that'd be another story..]]>Apr 18th 2009 12:44PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 12:44PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
ampere is a derivative of time
http://en.wikipedia.org/wiki/Ampere#Definition

volt is a derivative of time
http://en.wikipedia.org/wiki/Volt#Definition

ohm is a derivative of time
http://en.wikipedia.org/wiki/Ohm#Definition
]]>Apr 18th 2009 12:50PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/
watt is a derivative of time
http://en.wikipedia.org/wiki/Watt]]>Apr 18th 2009 12:51PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/= 1 J/s....
you were both right. They probably meant, 700W is created in one hour of sunlight exposure]]>Apr 18th 2009 12:55PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/1 ampere = 1 coulomb / second
1 volt = 1 joule / coulomb

hence
watt = ampere * volt = (coulomb / second) * (joule / coulomb) = joule / second]]>Apr 18th 2009 12:58PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/they generate 700 Watt * hours that is ENERGY

Watt per hour is nonsense in this case.

get it?]]>Apr 18th 2009 1:09PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 1:11PMhttp://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/http://www.engadget.com/2009/04/18/solar-powered-guiltless-green-home-theater-system-makes-your-w/Apr 18th 2009 1:28PM