Bio Energy Options Bill Johnson Manager-Biofuels Development Alliant Energy
Sustaining Energy into the Future
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Alliant Energy Biofuel Experience 1995-2006 • Ottumwa, IA (southern Iowa) 725 mW base load pulverized (PBR) coal generating station • Co-fired switchgrass at 5% • Studied grass production cultural practices, fuel processing, fuel handling, boiler chemistry, ash and emission impacts…
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Support Harvest, Storage, Transportation & Processing Research
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Basic Biomass Fuel Supply Chain Farmer
Forester
Industrial
Aggregator/Processor
End User
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Renewable Resources Inventory and Potential • Forest Products – Wood forest residues – Dedicated forest fuel crops (Poplar, Willow, …)
• Corn Stover
• Grasses
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True Costs of Harvesting Woody Biomass in Driftless Area In collaboration with SW Badger RC&D and Driftless Area Initiative
• Document costs associated with harvesting woody biomass in Southwest Wisconsin • Determine volumes of material by slope & mgt. prescription per acre • Targeting underutilized, low quality material
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Understanding Corn Stover as a Fuel Soil Stewardship Issues – Fertility – Erosion – Compaction – Carbon/tilth Harvesting and Storage Issues – Limited harvest window – Harvest technology selection/development – Where & how to store – Relatively low yield Fuel Characteristics – Moisture content – Chemistry – Density – Ash 8
Grass Research & Demonstration Alternative Biofuels Partnering with SW Badger RC&D, UW-Madison, Ceres, Mendel, Pheasants Forever‌
Switch Grass
Sorghum
Miscanthus
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Methane Gas • Livestock Manure – Generates electricity – Reduces odor – Prevents methane gas from escaping into the atmosphere
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Six farm digesters in service territory and one community (Dane Co.) digester under development (3.5 mW).
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Landfill Gas (19.6 mW)
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Glacier Ridge Landfill
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Wastewater Treatment • Equipment used: – 30 kw Capstone microturbines • Installed several systems in MN & WI using microturbines, using of turbine heat to promote organic degradation
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Transportation Fuel
What Next?
Ford 1998 CNG / Gasoline Pickup Truck Purchased By Dane County February 22, 2010 15
Transportation Gas Demonstration Collaboration with Dane County, Cornerstone Energy, Unison & MATC
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Contact
Bill Johnson Manager, Bio Fuels Development Alliant Energy 2777 Columbia Dr. Portage, WI (608) 742-0824 billjohnson@alliantenergy.com 17