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REF: Renewable Energy and Aquaponics

2. AQUAPONICS
Renewable Energy

3. Renewable Energy and Aquaponics
In some cases, cost of investment for equipment may take many years to see return
As the cost of energy increases the use and cost of alternative methods should decrease
Eliminating cost of energy increases profitability
Basic outdoor aquaponics systems
Low energy needs
Water pump
Air pump
Large commercial systems
High energy needs – greenhouse
Heating
Cooling
Ventilation

4. Anaerobic Digesters and Biogas
Convert waste to biogas (methane and CO2)
Ex : cow manure from a dairy; vegetable wastes
Used to heat greenhouse and generate electricity
Amount of biogas generated directly related to amount of raw manure available
Dairy cow generates lbs manure per day = kwh per day

5. Wood and Waster Burners for Heat
Furnaces that burn wood can heat air/water
More efficient to heat water
Water can pass through heat exchanger to heat the air
Do not use fossil fuel
No net carbon increase
New models are clean burning
Also available are models that burn corn and grain but this has increased food costs and makes viability questionable

6. Geothermal Energy Heat from the earth
Tapping geothermal energy is affordable and sustainable
Geothermal hot spring water can be used to heat greenhouses and water in the aquaponic system
Technology is rapidly advancing
Cost of installation is high

8. Solar Energy Run air and water pumps
Payback for installation of solar was 25 years in 2008
Costs should decreases as production and popularity increase

9. Reference
Nelson, R. L. Aquaponic Food Production Raising Fish and Plants for Food and Profit Nelson and Pade, Inc. Montello, WI. Pgs
With contributions from John S. Pade