UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 11-K

[  X ]          ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (FEE REQUIRED)
For the fiscal year ended December 31, 2002

OR

[     ]          TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (NO FEE REQUIRED)

Commission file number  1-8858

THE UNITIL CORPORATION
TAX DEFERRED SAVINGS AND INVESTMENT PLAN

(Full Title of Plan)

UNITIL CORPORATION
(Exact name of registrant as specified in its charter)



New Hampshire 02-0381573
(State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)
      
6 Liberty Lane West, Hampton, New Hampshire 03842-1720
(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (603) 772-0775






Financial Statements and
Report of Independent
Certified Public Accountants
The Unitil Corporation
Tax Deferred
Savings and Investment Plan

December 31, 2002, 2001 and 2000

C O N T E N T S

  Page
REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS 3
         
FINANCIAL STATEMENTS

         STATEMENTS OF ASSETS AVAILABLE FOR BENEFITS - DECEMBER 31, 2002 AND 2001
4
         
         STATEMENTS OF CHANGES IN ASSETS AVAILABLE FOR BENEFITS - YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000
         
         NOTES TO FINANCIAL STATEMENTS
         
SUPPLEMENTAL INFORMATION
         
         SCHEDULE H, ITEM 4i - SCHEDULE OF ASSETS HELD FOR
                                              INVESTMENT PURPOSES -
                                              DECEMBER 31, 2002 13 
 
CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS 14 



Report of Independent Certified Public Accountants

Administrator of
The Unitil Corporation Tax Deferred
Savings and Investment Plan

        We have audited the accompanying statements of assets available for benefits of The Unitil Corporation Tax Deferred Savings and Investment Plan (the “Plan”) as of December 31, 2002 and 2001, and the related statements of changes in assets available for benefits for each of the three years in the period ended December 31, 2002. These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

        We conducted our audits in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe our audits provide a reasonable basis for our opinion.

        In our opinion, the financial statements referred to above present fairly, in all material respects, the assets available for benefits of The Unitil Corporation Tax Deferred Savings and Investment Plan as of December 31, 2002 and 2001, and the changes in assets available for benefits for each of the three years in the period ended December 31, 2002, in conformity with accounting principles generally accepted in the United States of America.

        Our audits were conducted for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedule of assets held for investment purposes as of December 31, 2002 is presented for the purpose of additional analysis and is not a required part of the basic financial statements but is supplementary information required by the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. The supplemental schedule is the responsibility of the Plan’s management. Such supplemental schedule has been subjected to the auditing procedures applied in our audits of the basic financial statements and, in our opinion, is fairly stated in all material respects when considered in relation to the basic financial statements taken as a whole.

Grant Thornton LLP /s/

Boston, Massachusetts
June 6, 2003







The Unitil Corporation Tax Deferred Savings and Investment Plan

STATEMENTS OF ASSETS AVAILABLE FOR BENEFITS

December 31,

  2002  2001 
Investments in Mutual Funds at Fair Value:
  Putnam Fund for Growth & Income $  2,465,340  $  3,109,319 
  Putnam Stable Value Fund 4,167,226  3,653,789 
  Putnam Voyager Fund 3,985,342  5,468,400 
  Putnam Income Fund 1,043,610  522,195 
  Putnam New Opportunities Fund 1,681,361  1,956,832 
  Putnam S & P 500 Fund 964,682  1,057,072 
  Putnam International Growth Fund 807,669  879,826 
  George Putnam Fund of Boston 412,762  136,496 
  Putnam International Voyager Fund 291,885  230,250 
  
Employer securities (Unitil common stock at fair value) 4,104,952  4,064,707 
  
Participant loans 615,042 
463,443 
  
Assets available for benefits $20,539,871 
$21,542,329 

The Unitil Corporation Tax Deferred Savings and Investment Plan

STATEMENTS OF CHANGES IN ASSETS AVAILABLE FOR BENEFITS

For the years ended December 31,

       2002    2001    2000  
Addition to net assets attributed to:  
  Investment income:  
    Interest   $ 44,590   $ 42,666   $ 49,948  
    Dividends    510,110    786,123    1,699,472  
    Net depreciation    (3,098,430
)
 (4,045,154
)
 (5,065,411
)
     (2,543,730 )  (3,216,365 )  (3,315,991 )
  Contributions:  
    Participants'    1,541,878    1,335,570    1,297,941  
    Employer's    482,592    445,956    423,805  
    Rollover    118,435
   7,255
   58,387
 
     2,142,905
   1,788,781
   1,780,133
 
          Total additions (deletions)    (400,825 )  (1,427,584 )  (1,535,858 )
   
Deductions:  
  Benefits to participants    (588,443 )  (762,716 )  (1,289,568 )
  Loan distributions    (11,038 )  (1,870 )  (7,907 )
  Other    (2,152
)
 (2,893
)
 (6,042
)
          Total deductions    (601,633 )  (767,479 )  (1,303,517 )
 
          Net decrease    (1,002,458 )  (2,195,063 )  (2,839,375 )
 
Assets available for benefits:  
  Beginning of year    21,542,329
   23,737,392
   26,576,767
 
  Ending of year   $
20,539,871
  $
21,542,329
  $
23,737,392
 




The Unitil Corporation Tax Deferred Savings and Investment Plan

NOTES TO FINANCIAL STATEMENTS

December 31, 2002, 2001 and 2000

NOTE A — DESCRIPTION OF PLAN

  The following description of The Unitil Corporation (the “Company”) Tax Deferred Savings and Investment Plan (the “Plan”) provides only general information. Participants should refer to the Plan agreement for a more complete description of the Plan’s provisions.

      General

  The Plan is a defined contribution plan covering substantially all full-time employees of the Company and its wholly owned subsidiaries Unitil Service Corporation, Concord Electric Company, Exeter and Hampton Electric Company and Fitchburg Gas and Electric Light Company (the “subsidiaries”), who satisfy the eligibility requirements. It is subject to the provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”).

      Contributions

  A member may authorize a Basic Employee Contribution with a maximum contribution not to exceed $11,000 for 2002.

  The Employer shall contribute Employer Matching Contributions equal to 100% of the first 3% of salary the employee puts into the plan.

      Participant Accounts

  Each participant’s account is credited with the participant’s contribution and allocations of (a) the Company’s contribution and, (b) Plan earnings. Allocations are based on participant earnings or account balances, as defined. The benefit to which a participant is entitled is the benefit that can be provided from the participant’s vested account. The Plan administrator will pay for substantially all expenses of the Plan.





The Unitil Corporation Tax Deferred Savings and Investment Plan

NOTES TO FINANCIAL STATEMENTS — CONTINUED

December 31, 2002, 2001 and 2000

NOTE A — DESCRIPTION OF PLAN — Continued

      Vesting

  Participants are immediately vested in their contributions plus actual earnings thereon. Vesting in the Company’s matching and discretionary contribution portion of their accounts plus actual earnings thereon is based on years of continuous service. A participant is 100 percent vested after three years of credited service. If a participant terminates employment for any reason other than disability or retirement, he will be entitled to the full amount of contributions he has deposited, plus a percentage of his account balance derived from employer contributions based upon the following schedule:

Years of Service        % Vested
        0-1 0%      
        1-2 33%      
        2-3 67%      
          3+ 100%      

               A member will become 100% vested in his account as a result of disability, death or retirement.

      Participant Loans Receivable

  Participants may borrow from their fund accounts a minimum of $1,000 up to a maximum equal to the lesser of $50,000 or 50% of their account balance. Loan terms range from 1-5 years or up to 15 years for the purchase of a primary residence. The loans are secured by the balance in the participant’s account and bear interest at a rate that is fixed at the origination of the loan at the then prime rate plus one percent (1%). Principal and interest is paid ratably through monthly payroll deductions.

      Payment of Benefits

  On termination of service due to death, disability or retirement, a participant may elect to receive either a lump-sum amount equal to the value of the participant’s vested interest in his or her account, or annual installments over a fixed number of calendar quarters or years.

      Forfeitures

  A member who terminates his employment prior to becoming eligible for benefits and does not have a 100% vested right to Company contributions, forfeits the amounts not vested. Such forfeited amounts are used to reduce future Company contributions.





The Unitil Corporation Tax Deferred Savings and Investment Plan

NOTES TO FINANCIAL STATEMENTS — CONTINUED

December 31, 2002, 2001 and 2000

NOTE A — DESCRIPTION OF PLAN — Continued

  Upon enrollment and reenrollment, each participant shall direct that his contributions are to be invested in accordance with any of the following investment options.

  Putnam Fund for Growth & Income: This fund seeks capital growth and current income by investing primarily in common stocks that offer potential for capital growth and current income.

  Putnam Stable Value Fund: This fund invests in high-quality guaranteed investment contracts (GIC’s) issued by insurance companies and banks with the objective to achieve a high current income.

  Putnam Voyager Fund: This fund seeks capital appreciation for investors willing to assume above-average risk in return for above-average capital growth potential.

  Putnam Income Fund: This fund invests in debt securities, including both government and corporate obligations, preferred stocks and dividend – paying common stocks.

  Putnam New Opportunities Fund: This fund seeks long-term capital appreciation through the investment in common stocks with the potential of above-average long-term growth.

  Putnam S & P 500 Fund: This fund invests primarily in publicly traded common stocks, to achieve a return that closely approximates the return of the Standard & Poors 500- composite stock price index.

  Putnam International Growth Fund: This fund seeks capital appreciation by investing primarily in equity securities of companies located in a country other than the United States.

  George Putnam Fund of Boston: This fund seeks to provide a balanced investment comprised of a well-diversified portfolio of stocks and bonds that will produce both capital growth and current income.

  Putnam International Voyager Fund: This fund seeks long-term capital appreciation by investing primarily in smaller company stocks in a variety of countries outside the United States.

  Unitil Corporation Common Stock Fund (Unitil Corporation, no par value common stock)

        Participants may change their investment options daily.






The Unitil Corporation Tax Deferred Savings and Investment Plan

NOTES TO FINANCIAL STATEMENTS — CONTINUED

December 31, 2002, 2001 and 2000

NOTE B — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      Effective Date

  The Plan’s effective date is July 1, 1987, as amended and restated effective January 1, 2002 to comply with the requirements of recent changes in federal regulations. The Plan was further amended effective January 1, 2003 again to comply with the requirements of recent changes in federal regulations.

      Basis of Accounting

  The financial statements of the Plan are prepared under the accrual method of accounting.

      Management Estimates

  In preparing the financial statements in conformity with generally accepted accounting principles in the United States of America, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and revenues and expenses during the reporting period. Actual results could differ from those estimates.

      Investment Valuation and Income Recognition

  The Plan is administered by a trustee. The Plan’s investments (including investments bought, sold and held during the year) are carried at current quoted fair value. The difference between current fair value and the cost of investments are included in net appreciation or (depreciation) in fair value of investments.

  Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on the accrual basis. Dividends are recorded on the ex-dividend date.

      Payment of Benefits

  Benefits are recorded when paid.

      Risks and Uncertainties

  The plan provides for various investment options in any combination of stocks, bonds, fixed income securities, mutual funds and other investment securities. Investment securities are exposed to various risks, such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amount reported in the statement of net assets available for plan benefits.





The Unitil Corporation Tax Deferred Savings and Investment Plan

NOTES TO FINANCIAL STATEMENTS — CONTINUED

December 31, 2002, 2001 and 2000

NOTE B - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Continued

      Eligibility

  Employees are eligible for membership on the first of the month following:

  (1) Attainment of age 18, and
  (2) Completion of 1000 hours of credited service

      Normal Retirement Date

  A participant’s normal retirement benefit date is the date he/she reaches his/her 65th birthday or, if later, the 10th anniversary of the date he/she becomes a participant.

NOTE C — PLAN TERMINATION

  Although it has not expressed any intent to do so, the Company has the right under the Plan to terminate the Plan at any time subject to the provision of ERISA with respect to its employees by a written resolution with a copy delivered to the trustee. In the event of a Plan termination, participants will become fully vested in their accounts.

NOTE D – TAX STATUS

  The Internal Revenue Service has determined and informed the Company by a letter dated March 24, 2003 that the Plan and related trust are designed in accordance with applicable sections of the Internal Revenue Code (IRC).

  Amounts contributed to the participant’s accounts by the Company are taxable to the participants in the year of distribution. Contributions made by participants are deductible for Federal income tax purposes up to specified limits.





The Unitil Corporation Tax Deferred Savings and Investment Plan

NOTES TO FINANCIAL STATEMENTS — CONTINUED

December 31, 2002, 2001 and 2000

NOTE E – INVESTMENT APPRECIATION/(DEPRECIATION)

  The Plan’s investments (including gains and losses on investments bought and sold, as well as held during the year) appreciated/(depreciated) in value as follows:

       2002    2001    2000  
Mutual Funds (at fair value):  
  Putnam Fund for Growth & Income   $ (656,332 ) $ (316,421 ) $ 127,574  
  Putnam Stable Value Fund    --    --    --  
  Putnam Voyager Fund    (1,466,264 )  (1,859,586 )  (2,229,416 )
  Putnam Income Fund    21,958    8,727    3,904  
  Putnam New Opportunities Fund    (689,069 )  (894,727 )  (1,296,964 )
  Putnam S & P 500 Fund    (265,406 )  (146,156 )  (123,451 )
  Putnam International Growth Fund    (165,038 )  (208,257 )  (179,694 )
  George Putnam Fund of Boston    (56,257 )  (567 )  437  
  Putnam International Voyager Fund    (62,418 )  (127,507 )  (126,580 )

Common Stock (at fair value):
  
  Unitil Company Stock    240,396
 
 (500,660
)
 (1,241,221
)
    $
(3,098,430
)
$
(4,045,154
)
$
(5,065,411
)

NOTE F – PARTICIPANT LOANS

  Under the terms of the Plan and subject to certain limitations as defined in the Plan agreement, participants may borrow against the amount of their vested accounts. Such loans are payable over periods of up to fifteen years and bear interest at a rate equal to that charged by institutional lenders for similar loans at the time the loan is made. As of December 31, 2002, there are 87 loans to participants, maturing from 2003 to 2017 with interest rates ranging between 5.75% and 10.50%.










SUPPLEMENTAL INFORMATION











The Unitil Corporation Tax Deferred Savings and Investment Plan

SCHEDULE H, ITEM 4i — SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES

December 31, 2002

EIN #02-0381573

(a)
(b) Identity of Issue,
Borrower, Lessor or Similar Party

(c) Description of Investment,
Including Maturity Date, Rate of
Interest, Collateral Par, or Maturity Value

(e) Current Value
 
* Putnam Fund for Growth & Income                      Mutual Fund $2,465,340 
 
* Putnam Stable Value Fund                      Mutual Fund 4,167,226 
 
* Putnam Voyager Fund                      Mutual Fund 3,985,342 
 
* Putnam Income Fund                      Mutual Fund 1,043,610 
 
* Putnam New Opportunities Fund                      Mutual Fund 1,681,361 
 
* Putnam S & P 500 Fund                      Mutual Fund 964,682 
 
* Putnam International Growth Fund                      Mutual Fund 807,669 
 
* George Putnam Fund of Boston                      Mutual Fund 412,762 
 
* Putnam International Voyager Fund                      Mutual Fund 291,885 
 
* Unitil Corporation Stock Fund                      Company Common Stock 4,104,952 
 
* Participant Loans                      Interest at 5.75% to 10.5% at 12/31/02 615,042 
 
  *Represents a party-in-interest to the Plan






Consent of Independent Certified Public Accountants

We have issued our report dated June 6, 2003, accompanying the financial statements of The Unitil Corporation Tax Deferred Savings and Investment Plan contained in the information required by Form 11-K for the year ended December 31, 2002. We consent to the incorporation by reference of said report in the Registration Statement of the Unitil Corporation Tax Deferred Savings and Investment Plan on Form S-8 (File No. 33-24436).

Grant Thornton LLP /s/

Boston Massachusetts
June 6, 2003