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Integrating Renewable Energy into your Farm Plan






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    Integrating Renewable Energy into your Farm Plan Integrating Renewable Energy into your Farm Plan Presentation Transcript

    • Integrating Renewable Energy into Your Sustainable Farm
    • Overview• Scenic Valley Farms• Scenic Valley Green Energy• Wind Energy• Solar Energy• Solar Thermal Overview• SVF Solar Thermal Design• Temperature Data Loggers• Economics• Payback/ROI
    • Scenic Valley Farms• Designs and manages high tunnels, climate control systems, and solar thermal heating technology• Five high tunnels in Minnesota and Wisconsin• Produces organically certified tomatoes, peppers, blackberries, raspberries, herbs, and leafy green produce• Decades of agriculture and engineering experience
    • Scenic Valley Green Energy • Solid, long-term investment • Generate income from electricity • Promote sustainability by reducing C02 emissions • Gain energy independence and protection from volatile electricity prices • Offset tax liabilitiesAffordable,Clean Energy fromSmall Wind Turbines forHomes, Farms,Businesses, PublicFacilities and Investors
    • Sustainable High Tunnel Agriculture + Renewable Energy (SHARE-d) High Tunnels
    • Sustainable Agriculture. Clean Energy. • Joint venture high tunnel greenhouses • Environmentally and financially sustainable • Provides reliable supply of locally grown, organic produce • Excess produce sold on the open market • Harvest fruits and vegetables at optimum ripeness and flavor • Increases yields and extends the growing season • Merges the technologies to earn a rapid return on investment
    • High Tunnel Agriculture• Hybrid of open field and greenhouse production• Non-permanent structures• Less expensive than greenhouses• Crops planted in ground to ensure superior taste• Create 12 month growing season• Constructed with steel hoops, covered with heat retaining, light dispersing, anti-drip plastic• Plastic efficiently rolled up and down to manage air flow• Drip irrigation optimizes water and natural fertilizer inputs.• Versatile in size and shape• Incentives available at Federal and State levels
    • Environmental Management System (EMS)• Inexpensive climate control system for high tunnels• User monitors and controls the climate from touch screen PLC, laptop, or Smartphone• Ventilation, irrigation, and heating are monitored and controlled on-site or remotely • SVF awarded $100,000 USDA Small Business Innovation Research Grant • Testing at SVF high tunnels in both Minnesota and Wisconsin • Expected operational date: March 2011 • Potential SBIR Phase II Commercialization Grant in 2013
    • EMS Layout
    • Small Wind Energy Overview Incentives• Turbines of 100 kW or less • Federal Investment Tax in size Credit or Grant (30%)• Generates electricity for • USDA Rural Energy for SHARE farms America Program (25%)• Creates income from excess • Accelerated Depreciation electricity (30% for 30% tax bracket)• Solid, long-term investment • Wisconsin Small• Investors receive federal, Renewable Energy System state, and utility grants Grant (25%)• Offsets investors’ tax • Electric Utility Grants liabilities (varies)• Eliminates operational C02 • Sale of excess electricity emissions (≤ 40 kW)
    • Small Wind Energy Systems: A Valuable, Widely-Available ResourceInstalled cost of$2-$3/Watt is1/3 to 1/2 thatof solartechnologiesRequire less wind to operate than utility-scale wind energy applications
    • Wind Class Designations•Areas designated class 3 or greater are suitable for most utility-scale wind turbine applications• Whereas class 2 areas are marginal for utility-scale applicationsbut may be suitable for rural applications• Class 1 areas are generally not suitable, although a few locations(e.g., exposed hilltops not shown on the maps) with adequate windresource for wind turbine applications may exist• The degree of certainty with which the wind power class can bespecified depends on three factors: •the abundance and quality of wind data; •the complexity of the terrain •and the geographical variability of the resource.
    • Environmental Impacts• A single 30 kW wind turbine displaces the CO2 produced by 5 cars• A total of 50 turbines of 65 MW each: – Offset the CO2 emissions released by 10,000 cars – Power 7,000 homes – Displace 60,000 tones of CO2 annually
    • Online Produce Market• Web based e-commerce (operational on SVF website)• Provides up to date information on fresh produce for sale• Orders processed by credit card, check, or money order• Buyers communicate order notes to producer• Joint venture members given priority access to produce• Designed for wholesale buyers, restaurants, grocer co-ops• Open to registered users who complete a profile
    • Solar Thermal Heating • Qualifies for 30 percent Federal Investment Tax Credit • Reduces active income tax liability• Solar panels collect heated air• Fans circulate heated air below ground• Warms soil and air temperatures• Extends growing season to allow for additional crops and harvests• Reduces propane fuel usage and greenhouse gas emissions
    • Solar Thermal HT ComponentsHeat Sink Heat exchanger Solar collectors• 29’x95’x4’ hole • 3600’ of 4” drain • Black plastic on• 2” rigid insulation tile (perforated- high tunnel• 25 dump truck open system, non floor loads of sand perforated-closed • Flat plate system) collectors – for • Inline FanTek closed system blower fans – thermostatically controlled - upper and low limit • Distribution boxes (manifolds)
    • Site Preparation and Excavation
    • Lay drain tile, cover with sand, installdistribution boxes and fans, finish high tunnel
    • Solar Thermal Produce
    • High Tunnel Temperature Research• Three 30’x96’ high tunnels in Readsown, WI• HT1 - conventional with single layer• HT2 - solar thermal (ST) with double layer• HT3 - conventional with double layer• Used temp data logger to record temps every 30 minutes, 24/7• Research Nov 2011 to present• Temp data logger in soil, inside tunnel, outside• Periodic reading of logger data• Soil data logger in HT2 failed in May 2011
    • Data Logger Conclusions• Double poly layer raises night time air temps ≈ 7 F• Solar thermal with double layer raises night time air temps ≈ 20 F• Solar thermal soil temp reached 55F by March 15th• Tomato Planting Schedule • Outside May 23 • Conventional HT April 10 - some heat • Solar Thermal HT March 15 – some heat• Final Tomato Harvest Dates • Outside Sept 23 • Conventional HT Oct 23 – some heat • Solar Thermal HT Nov 24 – some heat
    • SHARE-d Economic Benefits• Boost fruit and vegetable yields up to 400% compared to field grown produce• Steady, reliable supply of organic produce• Purchase produce at wholesale distributor rates• Harvest and deliver fruits and vegetables at optimum ripeness and flavor• Create a year round growing environment• Meet consumer demand on either end of the production curve when competition is lower and prices are higher• Produce higher percentage of grade A fruit and vegetables• Meet the increasing demand for locally grown produce• Grow healthier, safer produce with less risk of contamination• Cost effectively expand the scale of organic farming• Shorten shipping distances = lower freight costs• Create new regional produce
    • Creating a Year Round SeasonSpinach Harvested on January 15th Ripe Gold Medal Heirlooms on November 4th Fall Bearing Blackberries on November 14th
    • Improves Produce Quality High Tunnel Grown Outdoor GrownTomatoes planted at same time in spring
    • SHARE-d Environmental Benefits• Shorter distance to market cuts fuel usage• Solar power reduces carbon emissions• Drip irrigation conserves water• Natural compost replenishes the soil• Organic mulching reduces erosion• Synthetic pesticides and fertilizers eliminated• Crops protected from climate and weather extremes• Disease, pest, and insect control inputs reduced• Respond to water shortages in other regions of the country
    • Boosting Produce Yields SVF Weekly Determinate Tomato Harvest (2011) • Yields 4 typically 200- 300% higher 3.5 in high tunnels 3 Our organicAverage marketable lbs per plant SVF High Tunnels • 2.5 determinate tomato yields 2 in 2011 = 20+ Total = 19.5 lbs per 1.5 plant lbs per plant in solar 1 thermal HT • Established 0.5 goal of 25-30 0 lbs/plant in 7/15/2011 8/15/2011 9/15/2011 10/15/2011 2012 SVF high tunnels outperformed yields at University of Minnesota Southwest Research and Outreach Center (SWROC)
    • Economics HT0- HT1 – HT3 – HT2- Single layer no Single Double Solar automation layer layer ThermalHigh tunnel (30’x96’) , not including $8500 $8000 $8500installationIrrigation and controller, trellis, $1200 $1400 $1400fertigation tankPlants and seeds, tomatoes, $400 $400 $400 Pricingspinach *Tomato= $2.25/#End walls, side boards, door $800 $800 $800 Spinach=hardware, screws $6.00/#Motorized rollup sides $0 $900 $900 Cash Floww/thermostat Handouts SupportHeater w/thermostat $0 $350 $350 HT2 &Ventilation & Circulation $0 $650 $650 HT3 Incomew/thermostatPlastic mulch $300 $300 $300Total Expenses (not including labor) $11200 $12800 $13300 $35000Income* $20000(est) $28000 $36380 $45811
    • Estimated Return on Investment
    • Contact Us Erik Gundacker (563) 650-3654 gun@usinternet.com Craig Gundacker (612) 961-3871 cegundacker@scenicvalleyfarms.com www.scenicvalleyfarms.com