Exhibit 12.1

UNITIL CORPORATION

COMPUTATION IN SUPPORT OF RATIO OF EARNINGS TO FIXED CHARGES

	Year Ended December 31,
	2016		2015		2014		2013		2012
(000’s, except ratios)
Earnings:
Net Income, per Consolidated Statement of Earnings	$	27,124	$	26,264	$	24,758	$	21,629	$	18,196
Federal and State Income Taxes included in Operations		15,354		15,456		13,995		12,652		10,976
Interest on Long-Term Debt		21,534		21,692		20,301		19,907		19,948
Amortization of Debt Discount Expense		315		299		286		302		324
Other Interest		1,966		1,763		1,661		1,737		2,003
Total	$	66,293	$	65,474	$	61,001	$	56,227	$	51,447
Fixed Charges:
Interest of Long-Term Debt	$	21,534	$	21,692	$	20,301	$	19,907	$	19,948
Amortization of Debt Discount Expense		315		299		286		302		324
Other Interest		1,966		1,763		1,661		1,737		2,003
Pre-tax Preferred Stock Dividend Requirements		17		19		22		22		165
Total	$	23,832	$	23,773	$	22,270	$	21,968	$	22,440
Ratio of Earnings to Fixed Charges		2.78		2.75		2.74		2.56		2.29