Off Grid Living - DIY Stoves

GO GREEN TIP #113:

DIY Stoves for Off Grid Living

 

My wife Emma and I have been farm-hopping for the last two years, volunteering with off-the-grid gurus who are doing all sorts of ingenious things.

 

We’ve learned a lot about several cool, low-impact cooking/kitchen devices that work to leave but a smidge of a carbon footprint behind. I’m talking about DIY-style, no-electricity-needed cooking appliances that are fun to make, awesome to use, and fantastic for impressing folks.

 

Many of these have been developed by NGOs looking to combat the negative health and environmental impacts of cooking over wood fires indoors, as much of the world still does (The WHO estimates 3 billion). But that doesn’t mean the rest of us can’t take advantage as well!

 

Check out some of these simple but brilliant off grid living ideas, and maybe try making one or all five of them…

 

Off Grid Living DIY Stove - Rocket Stove

Rocket Stove photo by fishermansdaughter via Flickr

Rocket Stoves

There are several problems that accompany typical wood-fueled stoves. First, it tends to be quite wasteful because heat is constantly escaping from the sides of the fire.

 

Wood stoves of this type are also very smoky. If they’re indoors, this will inevitably have seriously harmful effects on people’s health. Plus, they simply take a lot longer to cook with.

 

Off Grid Living DIY Stove - Improvised Rocket Stove

Improvised Rocket Stove by wsssst via Flickr

 

Enter the rocket stove. This is a super-efficient design that prevents any heat from escaping. It also completely burns the wood used, with very little smoke. This is accomplished by feeding the wood into a horizontal chamber, fueling a fire burning where that chamber meets a vertical stovepipe, and corralling all of the heat produced straight to the hub.

 

The power of rocket stoves ensures that cooking is much faster. Since it doesn’t require much wood, you can gather small pieces that naturally fall or come from normal pruning. Rocket stoves can be bought online or, better yet, portable camping set-ups can be made from upcycled tin cans.

 

Off Grid Living DIY Stove - Solar Cooker with Hot Dogs

Solar Cooker with Hot Dogs photo by Erik Burton via Flickr 

Solar Cookers

Another option for boiling up a stew or soup without making smoke or using hours’ worth of energy is the solar cooker.

 

Of course the solar cooker is using energy– that of the sun. But this solar heat is there to be harnessed whether we do so or not, so there’s no waste involved. What a solar cooker does is use the heat provided by nature to cook food. It’s hard to get much more eco-friendly than that!

 

There are many solar cooker designs to choose from. Some are the shape of satellite dishes and extend pots way out into the vast open air, where the reflection of the sun’s rays concentrate into a powerfully hot beam.

 

Off Grid Living DIY Stove - Solar Cooker from a Carboard Box

Solar Cooker from Cardboard Box photo by Wendell Smith via Flickr

 

There are also boxes that kind of cradle the pots into little reflective treasure chests. The idea behind any shape is to maximize the amount of sunlight that reaches them, and that’s where the energy for cooking comes from.

 

These little cookers have been really pushed via NGO channels, especially those trying to help people in places with a lack of wood and even less gas and electricity.

 

Consequently, there are numerous options for the keen do-it-yourselfer to try (or buy). The materials used are often simple, upcycled trash put to creative use. In other words, it’s not only eco-friendly, but also a cool little science project to do with the kids.

 

Off Grid Living DIY Stove - Dehydration Demonstration

Solar Dehydrator Demonstration photo by Resolute Support Media via Flickr

Solar Dehydrator

Another popular way for harnessing the sun’s energy to cook outdoors is to build a food dehydrator, which is also called a solar dehydrator.

 

Unlike the Ronco electric food dehydrators of Saturday morning infomercial lore, these solar babies are powered by the sun and most definitely will not fit on the kitchen counter. But they are fairly simple to build, to use, and to understand.

 

Off Grid Living DIY Stove - Food Dehydrator

Making Raisins photo by fishermansdaughter via Flickr

 

Unlike solar cookers, food dehydrators don’t need to concentrate their heat so precisely. They’re usually fashioned from a glass panel or two stationed over a painted black box. The most important ingredient in making a successful dehydrator– electric or solar– is airflow.

 

For solar dehydrators, that comes in the form of a separate, thinner hot box attached to the bottom of the contraption. This allows cool air to enter and be heated before going into the dehydrator. The air rises around the food, stealing away the moisture, and then escapes through vents at the top.

 

Solar dehydrators are really handy because they’re a great way of preserving food for later use. Many of us are fond of raisins, fruit leathers and jerky. But dehydration also creates many of the herbs, mushrooms, kale chips, and instant soup mixes we enjoy. In other words, this is a useful device that costs much less than the Ronco edition and even less (i.e. nothing) to operate.

 

Off Grid Living DIY Stove - Pizza by the Coals

Pizza by the Coals, photo by Emma Gallagher

Cob “Pizza” Oven

The cob oven is the contraption of dreams for the rustic baker. They’re often called pizza ovens, and the beauty of firing one up is that, once they’re fully heated, there will be ample time for baking several loaves of bread, cookies, and at least a dozen or more pizzas.

 

What’s really cool is that the Cob Oven is made from the earth beneath our feet. Because of this, they can cost nothing (or almost nothing) to make.

 

“Cob,” for those unfamiliar with the term, is a building technique that uses clay, sand and straw to create solid structures. These three components are moistened to a malleable level and then molded into shapes by stacking hunks (a.k.a. cobs) together.

 

Off Grid Living DIY Stove - Cob Oven

Cob Oven, photo by Emma Gallagher

 

When the mold dries, it becomes a remarkably durable solid structure. Cob houses in various parts of the world have been standing for hundreds of years. It’s a material long revered for its insulating and heat-absorbing qualities, and it’s also perfect for making ovens.

 

The photos above are of a real patio project that took my wife and I a couple of weeks to make (here’s a full write-up about the first Cob Oven I made). It takes several hours to get the fire heated up to pizza-making standards. But once they get rolling, they go for a long time.

 

Cob Ovens can also be a centerpiece for parties: Friends and neighbors come over for make-your-own pizza nights. The key to energy efficiency is to bake as much as possible when it’s hot.

 

Off Grid Living DIY Stove - Coolgardie Fridge

Coolgardie Safe, photo by Quod_vide via CC

Coolgardie Safe (or Fridge)

While this device isn’t exactly cookery in its truest form, few people are going to argue with the wonderful culinary attributes of refrigeration.

 

But most of us don’t realize that we can actually cool our food and store it for days on end without the need for a plug socket (or, much worse from an environmental standpoint, Freon). The Coolgardie safe (or fridge) hails from Australia, and it’s as low-energy as appliances come.

 

In a weird way, Coolgardie fridges use the sun to cool food. They’re built as a basic box with interior shelves. The sides are covered by screen to allow air to pass through, but to prevent insects and animals from getting in.

 

 

There is a tray of water atop the box. Porous clothes are draped from the tray over a couple of sides of the safe, and then the whole thing is put in a shady, breezy spot. As the water wicks down through the cloth and vaporizes, the wind pushes it through the box, which serves to keep the food inside nice and cool.

 

Make no mistake, this is not an electricity-free beer fridge to put out in the backyard. Sadly, there will be no frosty mugs. But it will undoubtedly keep your food fresher for much longer than having no fridge at all.

 

Like the rest of these DIY stove ideas, it’s a concept that might serve someone really well at a campground, barbecue, picnic, during a bake sale or in the case of severe power outages. Plus they can be thrown together with basic tools for less than $20, saving you money and energy at the same time.  –Jonathon Engels

 

Jonathon Engels

Jonathon Engels is a traveler, writer & teacher who’s been living abroad as an expat since 2005. He’s worked in nearly a dozen countries, and visited many others in between. He’s currently on a slow travel trip from Central America to Patagonia, volunteering his way throughout the journey. He’s a regular contributor to One Green Planet as well as Permaculture News, which focus on helping to keep the world green and clean. He’s also the founder of The NGO List, a compilation of grassroots NGOs seeking international volunteers. His work can be found at Jonathon Engels: A Life Abroad, and his current whereabouts and goings-on are available on his personal blog.

 

If you enjoyed our post on DIY Stoves for Off Grid Living, you might also like: 

GO GREEN TIP #70: Cooking Green

GO GREEN TIP #85: Homemade Camping Equipment (DIY Camping Stove)

GO GREEN TIP 97# : DIY Rainwater Harvesting Tips

GO GREEN TIP #108: Using Permaculture Principles in Travel

 

 

4 Responses to GO GREEN TIP #113: DIY Stoves for Off Grid Living

  • These are so great. I love to make pizza, and have been thinking of making a cob pizza oven for a long time now. I love the idea of getting a solar oven to take to Burning Man!

  • Izy berry says:

    So cool that is very important to learn because we want to have a better future

  • Pete says:

    Loved this article. I’m backpacking around the world at the moment. Tried every excuse in the book to get the wife to allow me to bring the travel stove but in the end, weight and convenience won out. Truthfully, in most of the developing world food is so cheap it’s not worth trying to cook for yourself.
    Next year we are changing up to a campervan to travel Europe. Can’t wait to try a homemade solar stove.
    Happy travel
    Pete

  • Adele Grisham says:

    A good way to save on your electric bill is to generate your own clean electricity.

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