Solar Stovetop Cooks Meals Off-Grid

Forget those old-fashioned solar ovens of yore. The new off-grid global cooking craze is the Hot Liner Solar Cooker Stove by Yonggu Do & Eunha Seo (which comes to us via Yanko Design).

The Hot Liner concept–which recently took the Golden Haechi award at the 2010 Seoul International Design Competition, co-hosted by Designboom–is a flexible panel rigid enough to form a stovetop, but flexible enough to lay flat on the ground or even hang on a tree for recharging.

Hot Liner solar stovetop

image via Yanko Design

Once the two-piece Hot Liner system is charged, it can be fit together in different configurations, depending on the size of the cooking pot or pots being used. For a small pot, just connect a single liner in a ring and adjust the shape to support the pot. For larger saucepans, two liners can be fit together the same way, providing an off-grid “dual burner” stovetop anywhere at any time. (The concept was designed to accommodate people living without access to reliable electricity in Africa.)

Hot Liner Solar Stovetop

image via Yanko Design

Each Hot Liner belt is composed of a flexible solar panel, a solar cell holder, a flexible battery, a heat coil and a magnetic strip at each end that connects the belt to itself or to its neighbor.


  • Reply February 12, 2011

    Maria Johnson

    How much does this unit weigh. Is it something backpackers might be interested in, or is it too heavy compared to carrying a stove and fuel?

  • Reply February 13, 2011

    Peter O'Connor

    The concept is brilliant – I just wonder how much heat one can expect from it. Your years it’s been said that PV is for light(work) only – that to use it to heat anything was a waste. I had suggested using PV to heat a heat-pad under a calorifier(hot-tank). Now this. What IS it capable of?? What’s the max power out?

  • Reply February 14, 2011

    Maxie Coale

    This product can reduce deaths in 3rd world countries caused by indoor cooking. It’s said that a large number of the population rely on stoves that use kerosene or coal, which produce toxic emissions that are inhaled by women and children. The Hot Liner does not emit anything which is a much safer alternative to coal-based stoves.

  • Reply February 15, 2011


    That right there, of the best flexible laminate solar cells out there, (say Uni-Solar) is about 10 Watts DC of solar power (I’m being generous and assuming you’re not hanging it from a tree like the guy in the picture, ensuring half of it isn’t blocked from the sun.)

    I’ll assume sufficiently flexible batteries exist (they do not,) and we’ll ignore for the moment that 10 Watts of uni-solar would cost about $20 a shot and the batteries would be…$40 or so?

    Put it in the sun for 12 hours you’ll get 72 Watt-hours of energy. Run 72 Watt-hours of solar energy through a radiant cooker and you will obtain something mildly warm, certainly significantly colder than if it had just been, say, a black energy-absorbent material.

    If you want *electricity* from the sun, PV is the way to go. If you want *heat* from the sun, gathering it into a pricey PV cell at less than 15% efficiency and then turning it back into heat is not. Give these people a typical “hot box” glass-and-wood solar oven and it will be about 20x more effective.

    It’s terribly sad how the design profession has embraced “sustainability” as a chic concept while still giving themselves license to ignore engineering and manufacturability concerns that would actually result in useful products that would do something other than support a fun award and a stylish cocktail reception afterwards.

  • Reply February 20, 2011

    George Diner

    whatever it is wights and does, if it is clean energy I welcome it, most probably tomorrow it will be upgraded and enhanced, but there must be always a beginning, so congratulations for the invention, I want to try it so let me know where to buy it.
    Thanks, in name of the future generations who will use it.

  • Reply August 12, 2011


    how do I get one yanko design,and how much is the cost.

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