Back to Garden for Nutrition IndexChoose your background color:
Self Sufficient Energy Production
This web site is mainly focused on cold weather temperate climate zones. Even energy generation and utilization are affected by cold weather. Therefore, this section emphasizes the technologies and methods which work best in cold climates. Some warm climate strategies are discussed but only in general.
The definition of self sufficient has changed over the years. Extreme off grid self sufficiency has become far less prevalent. Net zero participation in the electrical grid is the new goal. The main concern now is the ability to function for short periods when the grid goes down or gas pipelines are interrupted.
The first and most important step to being energy self-sufficient is to require as little energy as possible.
Green Housing Passive Cooling Passive Solar Heating
The next step to achieve energy self sufficiency is to concentrate on maximizing your use of low tech solutions.
Wood Drying Hay With Renewables Mini-Car
High tech solutions can be added with caution.
Wind Energy Methane Generation Links
Some technologies work better in warm weather. But sometimes they can have an effective short term niche such as summertime water pumping usage.
Solar Energy
Some problems can only be solved by community level cooperation. Community self sufficiency is as important as individual self sufficiency.
Animal Fat and Offal as Feedstock for Gasification
Some methods are high risk or are not long term sustainable.
Animal Fat as Diesel Fuel Algae Bio-Fuel Remaining Bio-Fuels
The last step is to choose technologies which can best utilize a regionally abundant and/or renewable energy.
Multiple Fuel ICE Engines Energy Complimentary Technology Wood Gas Generator********************************************************************** ********************************************************************** ********************************************************************** ********************************************************************** ********************************************************************** ********************************************************************** ********************************************************************** **********************************************************************
The best way to be self sufficient is to require as little energy as possible.
Green Building Advisor - In cool climates, thermal mass on inside University of Minnesota - Exterior insulation for foundations, crawl spaces, etc. SARE - Thermal banking Building Science - vented attics in cold climates Building Science - insulation details Green Home Institute - magnesium oxide Rice University - warm climate green roofs Conservation Technology - green roof Stanford - Amory Lovins lectures on energy efficiency**********************************************************************
Absorption, evaporation, and thermal technology is getting better adapted for small scale home application. With outside window shutters in place, a double roof, foundation insulation, passive vents at the highest points to vent heat, passive coolers at living level, and ground heat exchange feeding into the coolers, a home can be kept fairly cool.
Absorption and thermal coolers Absorption unit design Evaporative and absorption coolers Double roof for hot regions Wikipedia - ground heat exchange Zero Homes - ventilation**********************************************************************
With indoor night time window shutters and curtains, rocket stoves tied into indoor thermal mass, foundation insulation, ground cold exchange, thermal banking, and angled multi-pane windows, an airtight home can be kept fairly warm.
Passive Solar - east/west axis, thermal mass Wikipedia - sun angle, shutters Wikipedia - ground cold exchange Zero Homes - ventilation Thermal Banking******************************************************************
A wood burning stove is still the cheapest and most reliable source of energy. A rocket stove can even burn animal fat, nut shells, etc. An indoor and an outdoor stove will provide the capability to handle short term power outages.
RocketStove.org Rocket Stove Richsoil Rocket Stove Temperatures
Advantages 1. Low tech and reliable Disadvantages 1. Deforestation could be a problem, but a rocket stove can burn almost anything and is ultra-efficient.**********************************************************************
Chopped Hay and Forage Harvester:
Hay was originally baled so it could be easily transported. If the hay is fed on farm, there is no reason to bale. A cheap pull type forage harvester can cut grass and blow it into a trailer. It can then be conveyed into the solar drying barn.
Forage Harvester North Dakota State - chopped hay movement History of hay drying
Chopped Hay Artificial Drying: University of Florida - chopped hay dryingDrying Barn Research:
A simple sheet metal barn with installed fans can provide a very cheap drying environment for hay, fruit, food, etc.
Review of Solar Drying Solar Energy Drying Systems - solar chimney
Examples: Solar Drying Barn Solar Greenhouse Drying barn - pulling and pushing air fans Loose hay movement DIY Solar Dehydrator
Summertime is the cheapest time to dry for hay and grain using mostly solar heat and some electricity. To dry fruit in the fall, use electricity for heat if available. Wind power usually picks up in the fall. As a last resort, place rocket stoves under the solar heating unit for efficient sustained heat generation during fall / winter when there is little solar energy available.
Solar and wood fuel hay drying******************************************************************
Perhaps the most efficient form of short distance transport.
Organic Transit bike car Wikipedia Inner city car******************************************************************
Advantages 1. Best to contract with a company to install and maintain large wind turbines which are most efficient. 2. Feed and sell energy back into the grid. 3. Works well in rural areas. Disadvantages 1. Small wind turbines are most appropriate for extreme off grid sites. They can require substantial expertise to maintain. Small Wind Physics Small Wind Certification 2. Not very good for urban areas. Urban Wind 3. Be sure to harden your wind turbines against EMP.******************************************************************
Manufacturers have started generating methane from excess renewable energy. This energy storage medium can then be purchased by the farmer and stored on farm without batteries as a hedge against energy interruption.
Amory Lovins - the grid is the storage device Power to Gas example Methane from excess renewable energy
Advantages 1. Can be interfaced with existing methane infrastructure. 2. Methane has fewer generation and transportation technical hurdles than hydrogen. 3. Provides intermediate step for transition to hydrogen.******************************************************************Hydrogen technology is not ready yetDisadvantages 1. New developing technology.
Advantages 1. Perfect in the desert or outer space where there is lots of room not better used for something else. 2. Small isolated agricultural applications often work well. 3. Works best in an urban environment. Disadvantages 1. Uses up valuable solar space on a farm. 2. In cold regions, the sun's rays may be too indirect to be able to maximize efficiency during winter. 3. Vulnerable to disruption. Be sure to harden against EMP. Solar Water Heater: Build It Solar Wikipedia******************************************************************
Advantages 1. Animal fat and waste is easily obtained from abattoirs for sale to gasifier facility to make hydrogen / methane gas. 2. Does not compete as a food source. Disadvantages 1. Expensive initial investment. 2. Requires a large volume of cheap feed stock to be profitable. Best if there are many sources; municipal waste, abattoir waste, etc. 3. Complex technology requiring dedicated highly trained personnel. Wikipedia Global gasification statistics Penn State - gasification of animal rendering All Power Labs - example in India INTECH - hydrogen production with percentages Biomass Technology Group - evaluation of success factors University of Oulu Finland - review of technology ICREPQ - hydrogen generation, temperature American Hydrogen Association******************************************************************
Advantages 1. Animal fat is easily obtained on the farm and does not compete as a food source. 2. Can be used to drive diesel engines. Disadvantages 1. Moderately technical and dangerous 2. Animal fat diesel has a filter plugging point that is high enough for it to be difficult in diesel engines. Tanks, lines, valves, and pumps must be heated in cold climates. The colder the climate, the more difficult. 3. There is no stampede of B100 engines coming to market. 4. Can severely damage an engine if not done properly. Sites for converting animal fat to biodiesel: Comparison of biodiesel methods Convert animal fat to fuel with charcoal******************************************************************
Advantages 1. Yield of fuel oil is many times higher than any other biological crop. 2. By-product can be used as animal feed. 3. Can be used to convert CO2 and/or sewage. Disadvantages 1. Requires substantial infrastructure investment. 2. May not be feasible on a small scale, but medium scale for local community consumption might be possible. 3. More suitable in warm high sun light areas. 4. Contamination Algae Links The Future of Algae Wikipedia Algae Fuel Oilgae Algae Biodiesel**********************************************************************
Advantages 1. Methane from manure is a profitable local alternative. Disadvantages 1. Manure is better used to increase land fertility. 2. Growing food crops specifically for fuel is often not a good long term solution. It usually uses up agricultural resources which could be used for food. And it increases soil erosion. Green America - bio-fuels are unsustainable 3. Ethanol from grain fermentation is low energy.****************************************************************** ****************************************************************** ****************************************************************** ****************************************************************** ****************************************************************** ******************************************************************
Gas and liquid fuels can be used for all types of applications: tractors, generators, vehicles, rototillers, heating, etc. ICE power generators are an extremely important part of a plan to provide energy during times of disruption.
Energy levels of fuels
Advantages of ICE 1. ICE are not as vulnerable to disruption as an electric motor. 2. Versatility and adaptability may be more important than efficiency in times of instability. Multiple fuel engines are available or a conversion kit can be used. Search Multiple Fuel Vehicles Find alternative fuel stations Multiple Fuel Conversion WE R CNG - conversion kits IMPCO - CNG Conversions NAT G - CNG Solution 3. ICE are an advantage because the fuel can be stored on the farm without batteries. 4. Combustion engines provide high torque for heavy loads at low speeds. Electric motors have difficulty matching this. Farmers Weekly The Guardian 5. Quick refueling. 6. Multiple regional sources of fuel provides some reliability. 7. Purity of fuel is not a requirement. Disadvantages of ICE 1. Burning fuels in an ICE is often inefficient. Inefficiency of direct CNG ICE
It is difficult to optimize piston engines for multiple fuels because of pre-ignition and built in inefficiencies. So, new ICE engines are being designed to handle multiple fuels and still be efficient. Listed below is an example.
LiquidPiston - 75% thermal efficiency LiquidPiston - multiple fuel******************************************************************
There are many complimentary technologies coming to market. It is difficult to predict which ones will make the greatest contributions to the future of energy.
HHO - oxyhydrogen: Top HHO HHO generation Hydrogen / Methane blend GEET Fuel Processor: GEET fuel processor******************************************************************Engines can be converted to hydrogen. But there are many complexities, from the generation of hydrogen to the long term effect hydrogen has on materials.
Omnitek - Converting engines to hydrogen Knowledge Publications - Order Roy McAlister diesel conversion DVD Collier Technologies - Bi-fuel Hydrogen / Methane blend ICE converted to hydrogen Roy McAlister - convert engines to run on hydrogen Gasoline conversion University of Miami - hydrogen uses Hydrogen ICE technical issues Roy McAlister - Hydrogen Fuel Engine Fundamentals HICE requirements OSTI - effect of hydrogen on enginesRadio frequency: Frequency resonance for hydrogen generation Radio frequency hydrogen generation. Water vapor technology: Hydrogen / water engine Jet fuel for the US Navy from seawater: Detailed explanation of the chemistry
Wood gas was used extensively during WWII. Not recommended as a permanent part of an energy system because it uses wood chips which are better used as mulch to increase soil fertility. But it does work in emergency situations very well. Can drive an electricity generator to keep refridgeration units going. It was even used to drive vehicles. It does require a fair amount of technical knowledge.
Wood Gasification at Scotston Farm Wood Gasifier Plans Renewable Alternative Energy VideoBack to Garden for Nutrition Index