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Standard Electric Tractor Specifications

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  • Two 10 hp variable speed wheel motors for 60 peak traction hp
  • Separate 500 to 2,000 rpm PTO motor sized for applications from 10 hp to 40 hp will run all standard Category I implements
  • On-board 5 kWh battery pack for all day light duty application, like planting/harvesting
  • Standard Category I front and rear 3-Pt. hitches, each use two 1,500 lb. capacity linear actuators
  • Adjustable seat with forward/reverse and steering, as well as PTO and 3-Pt. hitch controls on arm rest
  • Total weight under 2,000 lbs.
  • 11" x 24" traction wheels
  • 5.5" x 16" steering wheels
  • Overall dimensions: 126" length, 87" height, 48" to 72" adjustable width
  • 0 radius steering
  • 20" ground clearance

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Performance
     Combustion engines are less than 15% efficient at converting fuel energy into work. Electric motors have efficiencies of over 90%. The fact that electric motors don't idle makes them 10 times more efficient than combustion engines. Electric tractors also don't have the daily maintenance costs associated with combustion engines.

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  • The 5 kWh on-board battery pack will power the tractor all day for light duty applications. It will power a 48" mower for 2 hours and a loader of forklift for about 3 hours. A 1 kW PV array will recharge the on-board battery pack in one day.
  • The cost of charging the 5 kWh battery pack at $.10 per kWh is approximately $.50 which is a fraction of the daily operating cost of a diesel tractor.

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  • The 10 kWh Auxiliary Battery Pack will power the tractor when used as a loader or forklift all day. It will power a 72" mower for 3 hours and a 48" rototiller for 2 hours. It will pull a one bottom plow for about 4 hours. The 4 kW PV roof will charge the 10 kWh Battery Pack in about half a day.
  • The 20 kWh Auxiliary Battery Pack will power a one bottom plow all day, a 72" mower for 6 hours, and a 48" rototiller for 4 hours. It will power an energy efficient home for 4 days. The 4 kW PV roof will charge the 20 kWh Auxiliary Battery Pack in about one day.
  • All day operation can be achieved for any implement with 2 Auxiliary Battery Packs.
  • Uni-Solar unbreakable triple junction thin film amorphous technology pays back the energy of manufacture in about 2 months of use.
  • Uni-Solar PV roofing converts about 6% of the solar radiation striking the panel into electricity.

The estimated cost for the standard tractor in small quantities is $25,000. This price is expected to drop to $15,000 when tractor production is over 1,000 units per year.

WHAT WE BUY, WE EMPOWER
     
Options and their Cost
Remote Control Seat $10,000  300 Watt PV Canopy $ 2,500
Video/Monitor $ 4,000  1 kW PV Canopy $ 8,000
10 kW Battery Pack $ 3,000  Solar Tracker $ 1,500
20 kW Battery Pack $ 6.000  2 kW PV Roof $18,000
Dump Bed $ 2,500  4 kW PV Roof $28,000
Planter/Harvester System $ 500  220 Volt Fast Charger $ 1,000

Projected Performance

  • The 5 kWh on-board battery pack will power the tractor all day for light duty applications. It will power a 48" mower for 2 hours and a loader of forklift for about 3 hours. A 1 kW PV array with tracker will recharge the on-board battery pack in one day.
  • The cost of charging the 5 kWh battery pack from the utility grid is approx. $.50.
  • Auxiliary Battery Packs are self loaded by the 3-pt. hitch and balance implement weight.
  • The 10 kWh Auxiliary Battery Pack will power the tractor when used as a loader or forklift all day. It will power a 72" mower for 3 hours and a 48" rototiller for 2 hours. It will pull a two row cultivator for about 4 hours. The 10 kWh battery pack is charged by the 2 kW PV Roof in one day, or in 2 hours from the grid using the 220 V fast charger.
  • The 20 kWh Auxiliary Battery Pack will power a two row cultivator all day, a 72" mower for 6 hours, and a 48" rototiller for 4 hours. It will power an energy efficient home for 4 days. The 4 kW PV roof will charge the 20 kWh Battery Pack in one day.
  • All day operation can be achieved for any implement with 2 Auxiliary Battery Packs.
  • Uni-Solar unbreakable triple junction thin film amorphous technology pays back the energy of manufacture in about 2 months of use.
  • Uni-Solar PV roofing converts about 6% of the solar radiation striking the panel into electricity.

The ultimate measure of our performance on this earth is the legacy we leave. Sustainability and positive evolution both demand efficient and equitable use of resources, completion of natural cycles and maintenance of air and water quality and soil fertility. Photovoltaics are 30 times more efficient at producing electricity than biofuels, and billions of times more efficient than fossil fuels if the amount of solar energy that it took to produce the fossil fuel is considered. Intensive agricultural production in the developed world consumes about 200 gallons of diesel per acre. The solar electric tractor's energy consumption will be measured in days of sunshine.

OUR FUTURE IS ONLY AS SUSTAINABLE
AS THE TOOLS WE USE TO GET THERE

Description    Tractor Specifications    Comparing Tractors    Letter from Steve


Agriculture pages:   Tractors   
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