Re: Global Warming -- 4th Edition: Carbonated Planet.
This is beyond stupid. Way, way, way, way beyond stupid.
www.startribune.com/business/172584031.html
I call bullsh*t on the $400 per year savings. Complete, absolute, and utter bullsh*t. I have a five-bed 2,200 sqft house.
I calculated my baseline gas use by taking the average usage in 2011 and 2012 during the months of June, July, August, and September. This came out to be 13.25 therms/month. I subtracted the baseline from all months (excluding any months that were below the average).
I then calculated the average cost per therm from April 2011 through September 2012 by dividing my total cost by therms used. This came out to be about $0.96/therm. I then multiplied the $0.96/therm by the difference between monthly usage and the baseline. I added this up to get my "total estimated heating cost". This came out to be just over $475 between April 2011 and September 2012 (inclusive). How am I going to save $400 per year when I'm spending about $317 per year?
Quick math (accounting for about 20% waste being reduced to 10% waste), I'm going to save about $23.47 PER YEAR. If the average additional cost is $1,500, that's going to take 64 years to pay back. Un-f*king-believable. The only way I'm going to hit $400 a year in savings is if I keep my windows open all winter.
Feel free to check my math:
Month.....Cost.....Therms
4/2011…..$60.36…..67
5/2011…..$52.14…..58
6/2011…..$21.17…..14
7/2011…..$21.29…..14
8/2011…..$19.09…..11
9/2011…..$19.60…..12
10/2011…..$19.26…..12
11/2011…..$35.00…..34
12/2011…..$72.60…..84
1/2012…..$89.09…..108
2/2012…..$86.55…..108
3/2012…..$70.08…..86
4/2012…..$33.30…..38
5/2012…..$24.72…..27
6/2012…..$18.01…..14
7/2012…..$19.08…..15
8/2012…..$17.73…..12
9/2012…..$19.07…..14