Wisconsin Energy Efficiency and Renewable Energy ResourceYour resource site for information on energy conservation.
Maple Syrup Production
In 2003 Wisconsin produced approximately 76,000 gallons of maple syrup, according to the Wisconsin Agricultural Statistics, from 350 producers. Production has ranged from a high of 87,000 in 1997 to a low of 65,000 gallons in 2000 during the last 7 years with an average of 74,000 gallons produced. According to the Ministry of Agriculture and Food, Ontario, Canada, it takes between 2.7 to 3.4 gallons of fuel oil to produce 1 gallon of maple syrup or between 4 to 500,000 BTUs per gallon. Based on Wisconsin's average production of 74,000 gallons, it would require 31 billion BTUs of energy to produce or the equivalent of 225,000 gallons of heating oil. Several different fuel sources are use for processing including wood, heating oil, propane and natural gas. According to the summary of a 2003 survey of Wisconsin Producers, the breakdown of primary fuel types was 45% wood, 49% fuel oil, 4% natural gas and 2% Propane. Wisconsin is ranked a distant 4th in maple syrup production in 2003 behind Vermont, New York and Maine, producing 6% of the U.S. production. Energy is a major component in the cost of production, accounting for 25% of the processing costs and 14% of the total cost (1994).
There are several technologies and devices that can reduce the energy costs in producing maple syrup.
Energy Efficiency Studies
In a 1988 study, 15 sugaring operations were provided energy audits with 11 of the operations determine to have energy conservation opportunities that would reduce energy costs an average of 31%. There were eight recommendations to increase burner efficiency, four to install or upgrade a sap pre-heater, 3 to install economizer units and one recommendation to install a reverse osmosis unit. The paybacks ranged from 0.3 to 7.4 years. Increasing burner efficiency and installing a preheater had the lowest cost and fastest payback. A 2003 survey reported wood fuel efficiency of producing a gallon of maple syrup ranged from 170,000 BTU for a producer that used a preheater, economizer and a reverse osmosis unit to 5,343,000 BTU per gallon for a hobbyist. Non-wood fuels ranged from 133,250 BTU per gallon for a producer using a reverse osmosis unit to 454,000 BTU. Large producers were more efficient as well as those using non-wood fuels. Large producers were more apt to use some type of energy efficiency equipment.
"Maple Syrup Production Energy Use Survey Summary- 2003", Scott Sanford, University of Wisconsin, 2003.
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|This project is funded in part by the Wisconsin Focus on Energy Initiative. For more information, visit http://www.focusonenergy.com or call 1-800-762-7077.|