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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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•  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

True Costs of Harvesting Woody Biomass in Driftless Area

In collaboration with SW Badger RC&D and Driftless Area Initiative

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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

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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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What Next?

Ford 1998 CNG / Gasoline Pickup Truck Purchased By Dane County February 22, 2010

Transportation Fuel

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Transportation Gas Demonstration Collaboration with Dane County, Cornerstone Energy, Unison & MATC

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Bill Johnson Manager, Bio Fuels Development

Alliant Energy 2777 Columbia Dr.

Portage, WI

(608) 742-0824 billjohnson@alliantenergy.com

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