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Public Law
123rd Legislature
Second Regular Session
Chapter 650
H.P. 409 - L.D. 531
An Act To Improve the Method of Taxing Natural Gas for Highway Use
Be it enacted by the People of the State of Maine as follows:
Sec. 1. 36 MRSA §3203, sub-§1,  as amended by PL 2001, c. 688, §5, is further amended to read:
 
1. Generally.   Except as provided in section 3204-A, before July 1, 2008 an excise tax is levied and imposed on all suppliers of distillates sold, on all retailers of low-energy fuel sold and on all users of special fuel used in this State for each gallon of distillate at the rate of 23¢ per gallon and for each gallon of low-energy fuel based on the British Thermal Unit, referred to in this subsection as “BTU,” energy content for each fuel as compared to gasoline. In the case of distillates, the tax rate provided by this section is subject to annual inflation adjustment pursuant to section 3321. Applicable BTU values are as follows.
Fuel type	BTU content per gallon	Formula (BTU value fuel/BTU value gasoline) x tax rate gasoline	Tax rate	
Gasoline	115,000	100% x 22¢	22¢ per gallon as authorized in section 2903	
Methanol (M85) 	65,530	57% x 22¢ 	12.5¢ per gallon	
Ethanol (E85)	81,850	71% x 22¢	15.6¢ per gallon	
Propane	84,500	73% x 22¢	16¢ per gallon	
Compressed Natural Gas	100,000 (BTU per 100 standard cubic feet)	87% x 22¢ 	19.1¢ per 100 standard cubic feet	
 
Sec. 2. 36 MRSA §3203, sub-§1-B  is enacted to read:
 
1-B.  Generally; rates beginning July 1, 2008.     Except as provided in section 3204-A, beginning July 1, 2008 an excise tax is levied and imposed on all suppliers of distillates sold, on all retailers of low-energy fuel sold and on all users of special fuel used in this State for each gallon of distillate at the rates provided in this subsection. Tax rates for each gallon of low-energy fuel are based on the British Thermal Unit, referred to in this subsection as “BTU,” energy content for each fuel as based on gasoline gallon equivalents or the comparable measure for distillates. The gasoline gallon equivalent is the amount of alternative fuel that equals the BTU energy content of one gallon of gasoline. In the case of distillates, the tax rate provided by this section is subject to annual inflation adjustment pursuant to section 3321. For purposes of this subsection, “base rate” means the rate in effect for gasoline or diesel on July 1st of each year as indexed under section 3321. 
 
A.  This paragraph establishes the applicable BTU values and tax rates based on gasoline gallon equivalents.
 Fuel type based on gasoline 	 BTU content per gallon or gasoline gallon equivalent 	 Tax rate formula (BTU value fuel/BTU value gasoline) x base rate gasoline 	
 Gasoline 	 115,000 	 100% x base rate 	
 Propane 	 84,500 	 73% x base rate 	
 Compressed Natural Gas (CNG) 	 115,000 	 100% x base rate 	
 Methanol 	 56,800 	 49% x base rate 	
 Ethanol 	 76,000 	 66% x base rate 	
 Hydrogen 	 115,000 	 100% x base rate 	
 Hydrogen Compressed Natural Gas 	 115,000 	 100% x base rate 	

B.  This paragraph establishes the applicable BTU values and tax rates based on distillate gallon equivalents.
 Fuel type based on diesel 	 BTU content per gallon or gallon equivalent 	 Tax rate formula (BTU value fuel/BTU value diesel) x base rate diesel  	
 Diesel 	 128,400 	 100% x base rate 	
 Liquified Natural Gas (LNG) 	 73,500 	 57% x base rate 	
 Biodiesel 	 118,300 	 92% x base rate 	

C.  The conversion factors established in this paragraph must be used in converting to gasoline gallon equivalents.
 
(1) For compressed natural gas, BTUs per 100 standard cubic feet is 93,000, and there are 123.66 standard cubic feet per gasoline gallon equivalent.
 
(2) For hydrogen, BTUs per 100 standard cubic feet is 27,000, and there are 425.93 standard cubic feet per gasoline gallon equivalent.
 
(3) For hydrogen compressed natural gas, BTUs per 100 standard cubic feet is 79,800, and there are 144.11 standard cubic feet per gasoline gallon equivalent.
Sec. 3. 36 MRSA §3321, sub-§1,  as enacted by PL 2001, c. 688, §8, is amended to read:
 
1. Generally.   Beginning in 2003, and each calendar year thereafter, the excise tax imposed upon internal combustion engine fuel pursuant to section 2903, subsection 1 and the excise tax imposed upon distillates pursuant to section 3203, subsectionsubsections 1 and 1-B are subject to an annual rate of adjustment pursuant to this section. On or about February 15th of each year, the State Tax Assessor shall calculate the adjusted rates by multiplying the rates in effect on the calculation date by an inflation index as computed in subsection 2. The adjusted rates must then be rounded to the nearest 1/10 of a cent and become effective on the first day of July immediately following the calculation. The assessor shall publish the annually adjusted fuel tax rates and shall provide all necessary forms and reports to suppliers, distributors and retail dealers.
Sec. 4. Transition. For taxes imposed during the fiscal year beginning July 1, 2008, the State Tax Assessor is authorized to calculate tax rates under the Maine Revised Statutes, Title 36, section 3203, subsection 1-B in a manner that most closely reflects the relative British Thermal Unit values between the fuel types listed in that subsection based on the tax rates for gasoline and diesel on July 1, 2008. This section applies retroactively.