Exhibit 12.1



UNITIL CORPORATION



COMPUTATION IN SUPPORT OF RATIO OF EARNINGS TO FIXED CHARGES



|                                                   |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|-------------------------------------------------- |  | ----------------------- | ------ | ---- | - | ------ |  | ---- | ------ | ---- | - | ------ |  | - | ------ | -
|                                                   |  | Year Ended December 31, |       
|(000s, except ratios)                             |  | 2005                    |        | 2004 |   | 2003   |  | 2002 |        | 2001 |  
|Earnings:                                          |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Net Income before Extraordinary Item               |  | $                       | 8,553  |      | $ | 8,226  |  | $    | 7,958  |      | $ | 6,088  |  | $ | 5,027  |  
|Extraordinary Item, net                            |  |                         |       |      |   |       |  |      |       |      |   |       |  |   | (3,937 | )
|                                                   |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Net Income, per Consolidated Statement of Earnings |  |                         | 8,553  |      |   | 8,226  |  |      | 7,958  |      |   | 6,088  |  |   | 1,090  |  
|Federal and State Income Taxes included in :       |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Operations                                         |  |                         | 4,275  |      |   | 4,206  |  |      | 3,551  |      |   | 2,490  |  |   | 3,421  |  
|Investment Write-down                              |  |                         |       |      |   |       |  |      |       |      |   |       |  |   | 1,236  |  
|Extraordinary Item                                 |  |                         |       |      |   |       |  |      |       |      |   |       |  |   | 1,388  |  
|Interest on Long-Term Debt                         |  |                         | 8,319  |      |   | 8,394  |  |      | 8,088  |      |   | 8,254  |  |   | 7,637  |  
|Amortization of Debt Discount Expense              |  |                         | 104    |      |   | 98     |  |      | 82     |      |   | 81     |  |   | 72     |  
|Other Interest                                     |  |                         | 1,046  |      |   | 629    |  |      | 1,070  |      |   | 1,038  |  |   | 1,895  |  
|                                                   |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Total                                              |  | $                       | 22,297 |      | $ | 21,553 |  | $    | 20,749 |      | $ | 17,951 |  | $ | 16,739 |  
|                                                   |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Fixed Charges:                                     |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Interest of Long-Term Debt                         |  | $                       | 8,319  |      | $ | 8,394  |  | $    | 8,088  |      | $ | 8,254  |  | $ | 7,637  |  
|Amortization of Debt Discount Expense              |  |                         | 104    |      |   | 98     |  |      | 82     |      |   | 81     |  |   | 72     |  
|Other Interest                                     |  |                         | 1,046  |      |   | 629    |  |      | 1,070  |      |   | 1,038  |  |   | 1,895  |  
|Pre-tax Preferred Stock Dividend Requirements      |  |                         | 234    |      |   | 325    |  |      | 391    |      |   | 419    |  |   | 417    |  
|                                                   |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Total                                              |  | $                       | 9,703  |      | $ | 9,446  |  | $    | 9,631  |      | $ | 9,792  |  | $ | 10,021 |  
|                                                   |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |  
|Ratio of Earnings to Fixed Charges                 |  |                         | 2.30   |      |   | 2.28   |  |      | 2.15   |      |   | 1.83   |  |   | 1.67   |  
|                                                   |  |                         |        |      |   |        |  |      |        |      |   |        |  |   |        |