Driving habits can greatly increase or decrease your fuel efficiency. Use these instructions to calculate your actual miles per gallon (MPG). Then look up your car's official MPG rating here to see how your fuel efficiency compares to the official numbers.
| Month | Electricity in kWh | Cost per kWh | Natural Gas in Therms | Cost per Therm | Water in CCF | Cost per CCF | People | HDD | CDD | BTU/Ft2 |
|---|---|---|---|---|---|---|---|---|---|---|
| January 2010 | 827 | $.093 | 408 | $1.12 | 5 | $2.35 | 3 | 813 | 0 | 12,471 |
| December 2009 | 1,003 | $.092 | 165 | $1.14 | 7 | $2.12 | 4 | 701 | 4 | 5,695 |
| November 2009 | 564 | $.101 | 69 | $1.15 | 6 | $2.15 | 3 | 329 | 0 | 2,523 |
| October 2009 | 823 | $.096 | 40 | $1.16 | 5 | $2.35 | 3 | 183 | 62 | 1,946 |
| September 2009 | 1,383 | $.107 | 9 | $1.86 | 11 | $2.84 | 3 | 12 | 272 | 1,606 |
| August 2009 | 2,164 | $.110 | 9 | $1.92 | 20 | $2.88 | 3 | 2 | 443 | 2,368 |
| July 2009 | 2,278 | $.110 | 20 | $1.43 | 19 | $2.69 | 3 | 2 | 414 | 2,613 |
| June 2009 | 2,298 | $.113 | 13 | $1.98 | 30 | $4.07 | 3 | 0 | 450 | 2,613 |
| May 2009 | 869 | $.097 | 41 | $1.56 | 20 | $2.85 | 5 | 16 | 185 | 2,020 |
| April 2009 | 840 | $.096 | 51 | $1.41 | 14 | $1.94 | 5 | 165 | 46 | 2,277 |
| March 2009 | 845 | $.095 | 117 | $1.19 | 9 | $1.76 | 5 | 312 | 12 | 4,169 |
| February 2009 | 800 | $.095 | 214 | $1.22 | 8 | $1.84 | 5 | 473 | 0 | 6,898 |
| January 2009 | 808 | $.093 | 349 | $1.23 | 5 | $2.29 | 4 | 645 | 0 | 10,766 |
| December 2008 | 864 | $.092 | 106 | $1.26 | 8 | $1.84 | 4 | 505 | 4 | 3,873 |
| Averages | 1,394 | $.099 | 84 | $1.31 | 19 | $1.83 | 3.6 | 218 | 173 | 3,772 |