ruthie king, director steve heckeroth, ceo school of ... · ruthie king, director school of...
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Ruthie King, Director School of Adaptive Agriculture
(707) 841-1588 www.adaptiveagriculture.org
Steve Heckeroth, CEO Solectrac LLC (707) 937-3385
www.solectrac.com
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0 Oil Equivalents/PersonSolectrac™
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Oil and Food Prices in lock StepCrude Oil ($/barrel)
Wheat ($/bushel)
Corn ($/bushel)
Soybeans ($/bushel)
Solectrac™
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Fossil Fuel Inputs for Global Ag Biz 10 units of fossil energy = 1 unit of food energy
• 28% for the manufacture of fertilizer • 20% for the operation of field machinery • 10% for farm and wholesale transportation • 11% for irrigation • 9% for processing • 10% for retail distribution • 8% for miscellaneous ---------------------------------
100% Total
Heckeroth, 06-17-06Solectrac™
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Solar/Electric Small Farm .01 units of fossil energy for = 1 unit of food energy
• 0% for the operation of field machinery • 0% for farm and wholesale transportation • 0% for irrigation • 0% processing • 0% retail distribution • 1% miscellaneous ---------------------------------
1% of Global Ag Biz
Heckeroth, 06-17-06Solectrac™
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Tractors require weight for traction
Batteries provide useful weight for traction
Solar Charged Electric Tractors
Solectrac™
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Built for Ford-New Holland ‘95 Onboard inverter for mobile AC power
E-tractors Built in Ft. Bragg shop ‘94E- Porsche and E-Tractor ‘93
Heckeroth, 07-08-96Solectrac™
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Scratch-built with wheel motors, adjustable seat and solar shade canopy 1996
Solectrac™ Heckeroth, 06-20-98
First use of linear actuators, exchangeable battery packs and remote control
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Scratch-Built Crawlers 2008 - 2010
Solectrac™ Heckeroth, 10-08-07
Good for low compaction and high traction but had low operating efficiency
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Before poisons and inefficient hydrostatic drive there were high clearance, adjustable track cultivating tractors like the Allis Chalmers ‘G’. The ‘G’s was 10 HP and had no PTO
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Prototype #1: AC motor; lead acid batteries; used transmission; no front hitch
Prototype #2: DC motor; Lithium batteries; used transmission; front, mid & rear hitch
Prototype #3: AC motor; Lithium batteries; used transmission; front, mid & rear hitch
Prototype #4: AC motor; Lithium batteries; NEW transmission; HC; front, mid & rear hitch
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Short wheel base; 20” clearance; good forward visibility; complete roll cage; 8 speeds forward and reverse; front, mid and rear Category 1, 3 pt. hitches with rear PTO and adjustable track
from 44” to 72”
The eFarmer is made for organic row crop farms
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Unloading the eFarmer at the International Testing Lab with the exchangeable pack on the mid hitch and loader bucket on the front hitch
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Category 1, Three Point Hitches Front, Mid and Rear Operated by Linear Actuators at 20 Times More Efficiency Than Hydraulics with No Toxic Fluids
Battery Exchange and Implement Motor Connectors Front and Rear with No Exposed Cables
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Exchangeable battery pack can be quickly mounted on any hitch for extended run time
Rear hitch with PTO can carry and power any Category 1 implement
Three Hitches can do 3 tasks with on pass
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Solectrac is also manufacturing an Electric Utility Tractor The eUtility can be used on: small farms, large indoor
equestrian arenas, commercial greenhouses, vineyards, hobby farms, and livestock operations.
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The eUtility can replace any 25 – 40 diesel tractor. It has Category 1 three point hitche and a 540 rpm PTO
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Land Area and Water Needed to Fuel Farm Traction without Oil
40 Acre Horse Farm
20-80 Acres Pasture for 2 Horses
1-5 Acres Winter Feed
40 Acre Bio-Fuel Farm 10 Acres Soy Beans for 600 gal
40 Acre Solar/Electric Farm .05 Acres of Barn Roof
Over 300,000 gallons
Land Water
No Water
* New Mexico Horse Council
* Missouri Ag extension
30,000 gallons
Heckeroth, 10-28-10Solectrac™
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Barn Roof Power Plants
Heckeroth Homestead ‘93 The Mother Earth News 2006
Heckeroth, 10-08-07Solectrac™
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Drive Train Efficiency
Combustion
ICE & Hydrostatic Electric Motor & Gears
62%
2%
Mechanical
10%
Drive Train
8%
94%
10%
Work
Regen
15%
Loss
Gain
Heckeroth, 5-20-07
10%
Idling
Solectrac™
4%
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Comparing Fossil Fuel with Solar Charging
Liquid fuel used 300 hrs/yr for 25 yrs 7,500 gals
traceCO2 / 25 years
Fuel cost over 25 yrs $10.00/gal, $4/watt
$240Fuel cost/yr
Vehicle Type & Fuel Source
Combustion Electric tractor & 1.5 kW PV
60 MWh
100 tons$75,000
$3,000
Assumptions average next 25yrs : 1 gal/hr, $10.00/gal, 30kWh/gal, 28lbs CO2/gal, *Current installed cost and performance for 3 kW PV w/ 25 year warranty
ZERO
Energy used 25 yrs 250 MWh
$6,000 *
Fuel cost/hr $10.00 $0.80
Solectrac™